Metal Dome & Dome Array blog – Best Technology

What are rcg bulk tactile metal domes?

Posted on December 5, 2024 by seo_li

What are rcg bulk tactile metal domes? RCG tactile metal domes are metal parts specially designed to provide tactile feedback. Its main structural feature is its four-corner shape. This four-corner design gives the dome higher stability and reliability. It is usually made of high-quality metal materials, such as stainless steel, copper alloy, etc. These materials have good elasticity and conductivity, and can maintain stable performance under different environmental conditions.

What is the rcg dome series?

The rcg dome series refers to a group of dome products with four-corner metal domes as the main feature. The four-corner metal dome is usually a small metal sheet component, and the design of its four corners is a key structural feature. This four-corner structure makes the dome have better stability during installation and operation.

It is generally made of metal materials with good elasticity and conductivity, such as stainless steel or copper alloy. These materials can ensure that the dome still maintains good mechanical and electrical properties under repeated deformation.

From the shape point of view, except for the four corners, the main part of the dome is flat and has a certain curvature or curved shape. This shape design is to allow the dome to produce elastic deformation when subjected to vertical pressure, and the degree of deformation can be adjusted according to specific design requirements, such as by changing the thickness of the dome, the curvature size and other parameters to control its elastic coefficient.

When external force acts on the central area or other specific positions of the rcg dome, the dome will produce elastic deformation according to the magnitude and direction of the force. Since the dome itself has good conductivity, this contact will realize the conduction of the circuit. Once the external force disappears, the dome will rely on its own elasticity to return to its original shape, and the circuit will be disconnected.

In this process, the four-corner structure plays a role in stabilizing the position of the dome. The four corners can be fixed on the housing or circuit board of the device to prevent the dome from excessive displacement or distortion when it is deformed by force, ensuring the normal on-off of the circuit and the reliability of key operations.

What are the Four-Leg Metal Dome Features?

The main features of the four-leg metal dome include:

1. High elasticity: The four-leg metal dome has excellent elastic properties and can maintain stable rebound ability after repeated deformation.

2. Excellent conductivity: The metal dome itself has good conductivity and can quickly conduct the circuit when the key is pressed to achieve signal transmission.

3. Low contact resistance: The contact resistance between the four-leg metal dome and the conductive contact is low, which can ensure good circuit conduction and reduce signal loss and energy loss.

4. Strong corrosion resistance and wear resistance: By selecting suitable metal materials (such as stainless steel), the four-leg metal dome can be used for a long time in harsh environments without corrosion, and has high hardness and strong wear resistance, and can withstand long-term use without wear.

5. High precision and high stability: Modern manufacturing technology enables the four-leg metal dome to achieve extremely high size and shape accuracy and maintain stable performance under various working conditions.

6. Strong customizability: Four-legged metal dome can be designed with different shapes, sizes and elasticity according to specific application scenarios to meet different needs.

What are the different metal dome shapes?

The main shapes of metal domes include round, cross, triangle, oval, waist round, etc. The diameters of these metal domes range from 3mm to 20mm, and the strength ranges from 100g to 6000gf.

Metal domes of different shapes and their application scenarios

Circular metal domes: often used in scenarios where loads need to be evenly distributed.

Four-legged metal domes: suitable for applications that require specific shapes and strengths.

Triangular metal domes: suitable for applications that require specific angles and strengths.

Elliptical metal domes: suitable for scenarios that require larger deformation space.

Waist round metal domes: suitable for applications that require specific shapes and strengths.

Metal domes are usually made of stainless steel, and can be surface treated with nickel plating, silver plating, gold plating, etc. according to needs to improve their corrosion resistance and conductivity.

Where is the rcg dome series used?

Application scenarios of four-legged metal dome include:

Membrane switches and control panels: Due to its good feel, high stroke and long life (up to 1 million times), four-legged metal dome is widely used in membrane switches and control panels.

Single-sided and double-sided, multi-layer hard boards (PCB) and flexible circuit boards (FPC): play an important role in the circuit connection of electronic devices.

Other electronic devices: such as mobile phones, tablets and other devices are also widely used in buttons and switches.

Can the rcg dome series be purchased in bulk?

It can be purchased in bulk. We provide a variety of packaging methods for bulk purchase.

Plastic box packaging: Place the metal dome in a customized plastic box, and a partition groove can be set inside the plastic box to arrange the dome in an orderly manner to avoid scratching and entanglement with each other. It is suitable for relatively small quantities and high requirements for dome protection, which is convenient for picking up and counting.

Paper envelope packaging: For some metal dome with smaller size and thinner thickness, paper envelopes can be used for packaging. The specifications and quantity of the dome can be marked on the surface of the envelope for easy identification and management. It is often used for sample gifts or small batch orders.

Foam pad tray packaging: The metal dome is placed on a tray with a foam pad. The foam can play a role in buffering and shock absorption to prevent the dome from being damaged by collision during transportation. The tray can be designed in different sizes and shapes to accommodate dome of various specifications.

Vacuum packaging: Vacuum packaging can be used. Put the dome in a vacuum bag, evacuate the air and seal it, which can effectively isolate impurities such as oxygen and moisture, extend the shelf life of the dome, and ensure its stable performance.

Coil packaging: It is packaged by winding it on a special reel. This packaging method is convenient for storage and transportation. At the same time, the dome can be easily pulled out from the reel when in use. It is suitable for automated assembly on continuous production lines, which can improve production efficiency and reduce the time and cost of manual operation.

In summary, as an important electronic component, RCG tactile metal dome has a wide range of applications in many fields such as consumer electronic devices, automotive electronic systems, medical equipment, and industrial control equipment due to its unique four-corner shape and excellent tactile feedback performance.

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What is a pressure switch tester?

Posted on December 4, 2024 by seo_li

What is a pressure switch tester? A pressure switch tester is a device specifically used to detect and calibrate the performance of a pressure switch. It can simulate various pressure environments and accurately measure parameters such as the operating pressure, return pressure, and switching difference of a pressure switch.

In a pressure switch, a metal dome is usually a part of a micro switch and plays a key role. When the deformation of the pressure-sensitive element is transmitted to the micro switch through a conversion mechanism, the metal dome will undergo elastic deformation according to the change in pressure. This deformation will cause the contact state of the micro switch to change, thereby achieving on-off control of the circuit.

The performance of the metal dome directly affects the accuracy and reliability of the pressure switch. If the metal dome is not elastic enough or the deformation is uneven, it may cause the operating pressure of the pressure switch to be inaccurate, or even cause misoperation or non-operation. Therefore, in a pressure switch tester, it is also very important to detect and evaluate the performance of the metal dome.

What is a pressure switch?

A pressure switch is an automatic control element that is mainly used to monitor and control pressure. When the pressure of the measured medium exceeds or falls below the preset value, the pressure switch opens or closes the contact through the deformation of the elastic element, thereby achieving control or protection of the measured pressure.

The working principle of the pressure switch is based on the elastic mechanical effect. When the medium pressure is applied to the elastic element, it will produce corresponding bending strain. By adjusting the stiffness of the elastic element and the preset trigger value, accurate control and detection can be achieved within different pressure ranges.

In the micro switch of the pressure switch, the metal dome is a common component. It mainly plays the role of assisting the on-off control of the circuit. When the conversion mechanism transmits the deformation of the pressure sensing element, the metal dome will undergo elastic deformation.

The elasticity of the metal dome can ensure that the contact state is accurately changed under appropriate pressure, and after the pressure disappears or returns to normal, it can rebound quickly to restore the micro switch to its original state.

Pressure switches are widely used in various automatic control systems, including home appliances such as air conditioners, refrigerators, and washing machines, as well as mobile equipment such as cars, ships, and airplanes. Its main function is to control or protect the corresponding system or equipment when the measured medium reaches a certain pressure.

In order to ensure the normal operation of the pressure switch and extend its service life, it is recommended to check and maintain it regularly:

Regularly check whether the contacts are in good contact: Make sure that the contacts are not oxidized or corroded, and clean or replace them if necessary.

Check the sealing performance: Make sure that the sealing ring of the switch is not aged or damaged to prevent medium leakage.

Calibrate the pressure setting value: Regularly calibrate the preset value of the pressure switch to ensure that it works within the correct pressure range.

Prevent overload: Avoid exceeding the rated working pressure of the pressure switch to prevent damage.

What is a pressure switch tester?

A pressure switch tester is a device specifically used to test the performance of a pressure switch. It simulates various pressure conditions and detects the working state of the pressure switch under different pressures to ensure that its performance meets the design requirements and usage standards.

The working principle of the pressure switch tester is based on the changes in the pressure sensor. When the pressure in the system is higher or lower than the set safety pressure, the disc in the sensor will move instantly, pushing open or close the switch connector through the connecting guide rod. When the pressure returns to the rated recovery value, the disc is immediately reset and the switch is automatically reset, thereby achieving the purpose of controlling the measured pressure.

Pressure switch testers are widely used in various industrial and automation systems to detect and control pressure. Such as:

Industrial automation: In industrial automation systems, pressure switches are used to control the flow of fluids and gases, and the tester ensures its stability and reliability under different working pressures.

Automobile manufacturing: In automobile manufacturing, pressure switches are used to control the cooling system and braking system of the engine, and the tester ensures its performance under extreme working conditions.

Aerospace: In the aerospace field, pressure switches are used to control the pressure and temperature in the cabin, and the tester ensures its reliability at high altitudes and extreme temperatures.

How do you check if a pressure switch is bad?

Turn on the pressure switch and observe whether the metal dome has signs of breakage, deformation or wear. The breakage of the metal dome is a more obvious damage. Once broken, it will definitely cause the pressure switch to not work properly. Slight deformation may affect the elasticity of the dome and the contact of the contacts, resulting in inaccurate action pressure or poor circuit contact.

Check the part where the metal dome contacts the micro switch contacts. If the contacts have obvious signs of wear, oxidation or ablation, it will affect the conductivity between the dome and the contacts. The oxide layer will increase the contact resistance, and ablation may cause the contact surface to be uneven, so that the dome and the contact cannot fit well, thus affecting the normal conduction and disconnection of the circuit.

You can use a small tool to gently press the metal dome to feel its elasticity. A normal metal dome should have obvious elastic recovery force and can quickly return to its original shape after pressing. If the elasticity of the dome is too weak, it may not provide enough force to make the contacts of the micro switch close or disconnect normally.

If there is a normal pressure switch of the same model, the elasticity of the suspected problematic metal dome can be compared with the normal metal dome. Under the same pressing force, observe whether their deformation degree and recovery speed are consistent.

What is the best way to test a pressure switch?

You can use a professional pressure calibrator, connect it to the pressure interface of the pressure switch, accurately apply pressure and compare the set value, detect the action, with high accuracy, suitable for high-precision control fields, but you need to pay attention to the interface sealing and correct operation. You can also use a simple pressure test device, which is low-cost and easy to operate, and is suitable for preliminary testing in general scenarios.

You can also use the resistance range of the multimeter to measure the normally closed and normally open contact resistances in different operating states of the pressure switch to determine the circuit connection and on-off. The operation is convenient, but before testing, make sure that the multimeter is normal and the right gear is selected, and pay attention to the electrical parameters of the pressure switch to prevent damage.

In short, the pressure switch tester is a very important testing and calibration equipment, which can ensure the accuracy and reliability of the pressure switch and ensure the safe operation of industrial production and equipment. When selecting and using the pressure switch tester, it is necessary to fully consider its function, accuracy, pressure range and other factors, and pay attention to the detection and evaluation of key components such as metal dome.

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What is a metal switch?

Posted on December 3, 2024 by seo_li

What is a metal switch? A metal switch is a switch device that is mainly made of metal materials or contains metal parts. It is usually composed of a metal shell, a button, and an internal contact mechanism. When the button is pressed, the internal metal dome or contact changes, thereby realizing the conduction or disconnection of the circuit. Push button switches are widely used in various electronic devices, electrical appliances, and industrial control systems.

What is a metal switch?

A metal switch is a device used to control the flow or interruption of current, and is widely used in electrical equipment and circuits. Its core function is to control the working state of electronic equipment by connecting or disconnecting the circuit. Metal switches have the advantages of simple structure, strong durability, reliable on-off, and sensitive operation, so they are widely used in various electronic devices.

Metal switches usually consist of the following key components:

Contacts: located inside the switch, used to actually connect or disconnect the circuit. The contacts are made of conductive materials, and common materials include copper, silver, etc.

Springs: Ensure that the contacts always maintain a certain contact pressure to ensure the reliability of on-off. The materials of the springs are usually steel, stainless steel, copper, phosphor bronze, etc.

Lever: used to transmit operating force to make the contacts contact and disconnect, usually by manually operating the lever to achieve the control of the metal switch.

Fixed plate: supports the spring and lever, fixed to the shell.

Shell: protects the internal structure, usually made of plastic or metal, with good insulation and corrosion resistance.

Are metal switches safe?

Metal switches are safe under proper use conditions, but you need to pay attention to some safety hazards and correct use methods.

Metal switch panels usually have strong weathering resistance, UV radiation resistance, flame retardancy and other characteristics, and have a long service life, so they are safe under proper use conditions. However, metal switch panels also have some safety hazards in use, mainly including:

Risk of electric shock: If improper installation or use of unqualified electrical appliances and cables, there may be a risk of electric shock, which may even lead to life-threatening.

Overload problem: Using too high a load can cause the electrical components of the switch panel to overheat or even catch fire.

In order to avoid these safety hazards, you need to pay attention to the following points when using metal switch panels:

Correct installation: Select qualified electrical equipment and install it correctly. Do not install electrical appliances where they should not be installed.

Anti-electric shock protection: When installing metal switch panels, attention should be paid to the reliability of grounding, and corresponding safety protection measures should be taken in time when there is a hidden danger of electric shock.

Control load: When using metal switch panels, attention should be paid to controlling the use load to ensure its normal operation.

Strengthen safety measures: During use, attention should also be paid to preventing safety protection issues such as burglary.

In addition, metal switch panels have some advantages, such as elegant and ultra-thin design, good decorative effect, high durability and safety.

What metal is used in switches?

The metals used in switches mainly include copper and silver.

Copper is one of the commonly used metal materials in switches. Copper has good electrical conductivity and certain elasticity, can withstand certain stretching and extrusion, and is suitable for the connection part of the switch. Copper has good electrical conductivity and low loss when transmitting electrical energy, which is suitable for environments with high-frequency switch operations.

Silver is another commonly used metal material, especially in the contact part of the switch. Silver has very good electrical conductivity, which can ensure the fast response and stable operation of the switch. However, silver is soft and easy to oxidize, so in practical applications, silver alloys are usually used to improve its hardness and durability.

Silver alloy is an alloy made by mixing silver with other metals (such as nickel). This alloy not only maintains the good conductivity of silver, but also has higher hardness and better oxidation resistance.

Common silver alloys include silver-nickel alloy and silver-cadmium alloy. Silver-nickel alloy is not easy to oxidize and rust, and is an ideal contact material; while silver-cadmium alloy has good conductivity, but because cadmium is harmful to the human body and easily forms small particles on the contact surface, affecting the conductivity, it is less used.

In general, when choosing the metal used in the switch, factors such as conductivity, hardness, oxidation resistance and cost need to be considered. Copper and silver alloys are widely used in switch manufacturing due to their excellent conductivity and durability.

How does a metal switch work?

The working principle of metal switch is mainly based on the conductive properties of metal conductors, and the on-off control of the circuit is realized through mechanical operation. The structure of metal switch usually includes parts such as contacts, springs, levers, fixing plates and shells.

The contact is the most important part of the metal switch. It is made of conductive materials such as copper, silver, gold, etc., and is responsible for realizing the on-off of the circuit. The spring ensures that the contact always maintains a certain contact pressure, the lever is used to transmit the operating force, and the fixed plate is used to support the spring and lever and is fixed on the shell.

What is the best material for a switch?

The best material for a switch is polycarbonate (PC). PC material has excellent heat resistance, flame retardancy and high impact resistance, can withstand arc erosion for a long time, and has very good resistance to ultraviolet rays, and will not change color after long-term use.

In addition, PC material has mature processing technology, comfortable feel, and excellent brightness. It is the preferred material for high-end switch products on the market.

Advantages of PC material

Heat resistance and flame retardancy: PC material has excellent heat resistance and flame retardancy, can remain stable in high temperature environment, is not easy to deform, and can withstand arc erosion for a long time.

Impact resistance: PC material has extremely high impact resistance, and it will not break even if it is hit with a hammer.

UV resistance: PC material has good resistance to ultraviolet rays and will not change color after long-term use.

Mature processing technology: PC material has mature processing technology, comfortable feel, and excellent brightness.

What are the advantages and disadvantages of metal switches?

The advantages of metal switches include:

Good heat dissipation: Metal materials have good thermal conductivity and can effectively dissipate heat, ensuring long-term stable operation of the switch.

Sturdy and durable: The metal shell provides sturdiness, can withstand multiple presses, and has good durability.

Strong anti-interference ability: The metal shell can shield electromagnetic signals, reduce external electromagnetic interference, and improve the reliability of the equipment.

Good waterproof performance: Some metal switches are designed with waterproof functions, suitable for humid or outdoor environments, and improve the durability and safety of the product.

High current carrying capacity: It can carry higher currents and is suitable for a variety of high-power devices.

The disadvantages of metal switches include:

High cost: The material and manufacturing costs of metal switches are relatively high, resulting in a higher overall price.

Difficult installation: Metal switches are relatively heavy and may require special treatment during installation, which increases the difficulty of installation.

Different heat dissipation performance: Metal switches without iron may not have the same heat dissipation performance as switches with iron.

Applications and characteristics of different types of metal materials in switches:

Stainless steel: It has excellent corrosion resistance, oxidation resistance and mechanical strength, and is suitable for applications under various environmental conditions.

Aluminum alloy: low density, good thermal conductivity, suitable for light equipment.

Silicon: has good high temperature resistance, wear resistance and softness, suitable for automobiles and medical equipment.

In short, metal switches, as an important electronic component, play an important role in electronic equipment, industrial control, automotive electronics, medical equipment and other fields. As a special type of metal switch, metal dome switch has the characteristics and advantages of good conductivity, fast response time, reliable contact performance, long life and high durability.

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What is a snap switch?

Posted on December 2, 2024 by seo_li

What is a snap switch? A snap switch, also known as a micro switch, is an electronic component that can quickly respond to an action and switch states. It usually consists of an operating part, a contact mechanism, and a housing. The characteristics of a snap switch include fast response, and the response time is usually a few milliseconds or even shorter, which is suitable for scenarios that require high-speed switching.

BEST Technology has rich experience in design and production, specializing in the production of various types of switches, selecting the best quality materials and devoting itself to producing the best products.

What is a snap switch used for?

The main function of a snap switch is to complete the switching or reversing of the motor with a single manual push. A reed mechanism is usually used to ensure fast and stable switching of the circuit.

The working principle of a snap switch is to push the switch body through a manual operating rod, and the reed mechanism quickly moves after being acted upon by an external force to connect or disconnect the circuit. Due to the use of a reed mechanism, the operation feels lighter and the pushing force is small, which can achieve fast and stable circuit switching.

Snap switches are often used in situations where frequent switching is required, such as automated production lines, mechanical processing equipment, etc., due to their fast and stable characteristics. In these scenarios, snap switches can ensure fast response and efficient operation of the equipment.

What is another name for a snap switch?

Another name for a snap switch is a sensitive switch, a snap switch, a momentary switch, a snap-action snap switch, a fast switch, a snap-action snap switch, and a snap-action momentary switch.

These names vary in different fields, such as high-speed switch in shipping, quick-action switch in business, snap-action switch in metallurgy, quick action switch in machinery, etc.

Is a toggle switch a snap switch?

A toggle switch is a snap switch. A toggle switch switches the circuit on or off by toggling the switch handle, thereby achieving the purpose of switching the circuit. It is characterized by flexible slider movement, stable and reliable performance, and is usually used in low-voltage circuits.

There are significant differences between toggle switches and micro switches in structure and scope of use. Toggle switches are usually used in household appliances with relatively low voltages. They are easy to operate and the circuit can be switched freely. Micro switches are mainly used for equipment that requires frequent circuit switching for automatic control and safety protection.

What is a motor snap switch?

A motor snap switch is a switch that can achieve fast and stable switching of the motor through manual operation. It usually adopts a reed mechanism and can complete the switching or reversing of the motor with one manual push. Its structure is relatively simple, mainly consisting of a switch body, a terminal block, a reed mechanism and a manual operating lever. It has a light feel and small pushing force.

Since the snap switch can achieve fast and stable circuit switching, it is usually used in occasions that require frequent switching. For example:

Automated production line: In the automated production line, the snap switch is used to control the start and stop of the equipment to ensure the continuity of the production process.

Mechanical processing equipment: In mechanical processing equipment, the snap switch is used to control the start and stop of the machine tool to improve production efficiency.

Other industrial equipment: In industrial equipment that requires frequent operation, snap switches are also widely used in various control systems.

In summary, the motor snap switch is suitable for occasions that require frequent switching and do not require high control accuracy. Its fast and stable characteristics make it play an important role in industrial automation.

What is the advantage of a snap action switch?

The main advantages of snap action switches include the following aspects:

Quick response and stable switching: snap action switches can complete the switching or reversing of the motor with a single manual push, and usually use a reed mechanism to ensure fast and stable switching of the circuit.

Simple structure and easy operation: The structure of the snap action switch is relatively simple, usually consisting of a switch body, a terminal block, a reed mechanism and a manual operating lever. Its operation feel is relatively light, and the pushing force is small, which is suitable for environments with frequent operations.

High reliability and long life: snap action switches usually have long life and high reliability, and can work stably in harsh environments.

Wide application areas: Due to its fast response and stable switching characteristics, snap action switches are widely used in various automation equipment and industrial control systems.

In summary, snap action switches have become an indispensable component in many automation and industrial control systems due to their fast response, simple structure, high reliability and wide application areas.

The same snap-action switch also has some disadvantages:

Poor contact: The snap-action switch interrupts and connects the circuit by contacting or separating the contacts. If the contacts are in poor contact, it will affect the normal operation of the circuit and may cause the device to fail to start normally or run unstably.

Susceptible to contamination: The snap-action switch is a mechanical switch and is easily affected by external oil, dust, etc. These pollutants will affect the performance and life of the switch.

Wear problem: Long-term or improper operation may cause wear of the sliding contacts, which in turn affects the performance and life of the switch.

Difficulty of installation and maintenance: The installation and maintenance of snap-action switches require certain professional knowledge and skills. Improper operation may cause damage to the equipment or performance degradation.

What is the difference between a snap button and a press button?

The main difference between snap buttons and press buttons lies in their operation methods and application scenarios.

1. Operation method

Snap button: The action is usually triggered by sound or touch. Once triggered, the button will respond quickly and complete the operation.

Press button: The user needs to actively press the button to trigger the action by manual pressure.

2. Application scenarios

Snap-action buttons: often used in situations where quick response is required, such as emergency stop buttons, safety switches, etc., because they can quickly cut off the circuit or start the protection mechanism after being triggered.

Press buttons: suitable for equipment that requires manual confirmation and operation, and users can control the switch or function adjustment of the equipment by manually pressing.

3. Structural features

Snap-action buttons: usually designed as ultra-thin, surface-mounted touch-sensitive, suitable for quick triggering and response.

Press buttons: various designs, including press handles, knobs, push-type, etc., intuitive operation and not easy to trigger by mistake.

4. Working principle

Snap-action buttons: make the circuit conductive or disconnected through sound or touch, suitable for scenarios that require quick response.

Press buttons: manually apply pressure to make the contacts contact and complete the circuit on and off, suitable for operations that require manual confirmation.

In summary, snap-action buttons and press buttons are different in operation mode, application scenarios, structural characteristics and working principles. The choice of which button to use depends on the specific application requirements and usage environment.

In short, the snap-action switch is a switch with the characteristics of fast response, high reliability, multiple types and specifications, and a wide range of applications. It plays an important role in electronic equipment, mechanical devices, industrial automation and other fields.

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What is a silver metal dome switch?

Posted on November 29, 2024 by seo_li

What is a silver switch? The core component of a silver switch is a silver-plated metal spring. Metal dome is usually made of materials with good elasticity and conductivity, such as stainless steel, copper alloy, etc., and then is plated with a layer of silver on its surface. Silver is a metal with excellent electrical conductivity. Plating it on the surface of the metal spring can significantly improve the conductive performance of the switch.

BEST Technology supports the production and design of different types of metal dome switches, using stainless steel 301 or 304 materials for production and supporting tin, gold, silver and other processing processes on the dome to meet actual needs.

What is a silver dome switch?

Silver-plated metal dome switch is an electrical device that uses silver-plated metal dome in the switch. This kind of switch usually consists of contact pieces, contacts, spring pieces, etc., among which the metal spring piece is one of the core components of the switch. The metal dome plays the role of conducting and disconnecting circuits in the switch, and its performance directly affects the electrical performance and service life of the switch.

The functions and advantages of silver-plated metal dome:

Conductive properties: Silver is a good conductive metal with good electrical and thermal conductivity. The silver-plated metal dome can significantly improve the conductive performance of the switch and reduce resistance, thus improving the response speed and stability of the switch.

Mechanical properties: Silver has good mechanical properties and corrosion resistance, which can enhance the durability and stability of the dome and extend the service life of the switch.

Appearance quality: The silver plating layer can reflect light, giving the switch better visual effects and aesthetics.

Application scenarios of silver-plated metal dome switches:

Silver-plated metal dome switches are widely used in various electrical equipment, such as lamps, household appliances, industrial equipment, etc. Due to its excellent electrical conductivity and mechanical properties, silver-plated metal dome switches are particularly suitable for applications that require high strength conductivity and high durability.

Manufacturing process of silver-plated metal dome switch:

There are many methods of silver plating, the commonly used ones include electroplating, chemical plating and hot plating. Among them, electroplating is one of the most commonly used methods. By placing an object in an electrolyte and connecting the object to a power source through a capacitor, electrons deposit a layer of metal on the surface of the object to form a metal film.

To sum up, silver-plated metal dome switches have been widely used in various electrical equipment due to their excellent electrical conductivity, mechanical properties and aesthetics.

What materials does the dome switch consist of?

The main materials of dome switches include stainless steel 301 or 304. These materials have the characteristics of ultra-thin (0.05mm-0.1mm thickness) and ultra-thick (generally higher hardness), and are usually used to make button springs and metal springs.

The working principle of the dome switch is to press to make the center point of the dome concave and contact the circuit on the PCB (Printed Circuit Board), thus forming a loop, allowing current to pass through, and making the product work normally.

Dome switches are widely used in membrane switches, contact switches, PCB boards, FPC boards, medical equipment and other products. Common metal dome shapes include circles, crosses, triangles, ovals, etc. These shapes of dome are suitable for different application scenarios and needs.

Can the dome switch be silvered?

The dome switch can be silver-plated. Silver plating is an electrochemical process that mainly uses the principle of electrolysis to deposit a layer of silver on the surface of the dome switch. Put the dome switch into the plating tank, and by controlling parameters such as current density, plating time, temperature, etc., the thickness and quality of the silver plating layer can be accurately controlled.

Silver is a very conductive metal and has a very low resistivity. Silver plating on the dome switch can significantly reduce the contact resistance between the dome and the contact point.

Silver plating can form a protective film on the surface of the dome to prevent the dome from being eroded by external environmental factors (such as oxygen, moisture, corrosive gases, etc.). In some harsh working environments, silver-plated dome switches can better maintain their performance.

The surface of the silver-plated dome switch is brighter and more beautiful, which has certain advantages in some electronic equipment with high appearance requirements (such as consumer electronics products). In addition, the silver plating can also improve the solderability of the dome switch.

What are silver switches good for?

The switch made of silver-plated metal spring has the following main uses and advantages:

1. Improve electrical conductivity: Silver is a good conductive metal with good electrical and thermal conductivity. It can effectively improve the electrical conductivity and mechanical properties of the switch, ensuring the stability and reliability of the switch in various electrical applications.

2. Enhance mechanical properties and corrosion resistance: Silver has good mechanical properties and corrosion resistance. The silver-plated metal dome can withstand greater pressure and wear, extending the service life of the switch.

3. Improve appearance quality: The silver-plated surface can reflect light, giving the switch a better visual effect, better aesthetics and decoration.

4. Wide range of applications: Silver-plated metal dome is widely used in various electronic devices. It has small size, long life, flexible operation, stable and reliable performance, and is suitable for operating signal input of various electronic devices.

In summary, switches made of silver-plated metal dome have significantly improved electrical conductivity, mechanical properties, corrosion resistance and appearance quality, and are widely used in various electronic devices to meet the needs of different application scenarios. .

What are the characteristics of silver switches?

The main features of silver-plated metal dome switches include good electrical conductivity, strong oxidation resistance, long service life and low resistance.

Silver-plated metal dome switches have very good electrical conductivity because silver is an excellent conductor and can provide stable current transmission. In addition, the silver plating layer can effectively prevent the metal dome from oxidation and extend the service life of the switch. The silver plating layer can also reduce resistance and improve the response speed and stability of the switch.

Due to its excellent electrical conductivity and anti-oxidation capabilities, silver-plated metal dome switches are often used in situations where high-quality electrical conductivity is required, such as precision instruments, aviation instruments and other fields. These fields have high requirements on the stability and reliability of switches, and silver-plated metal dome switches can meet these needs.

Compared with galvanized switches, silver-plated metal dome switches have more advantages in conductive performance and anti-oxidation, but the price may be higher. Although galvanized switches also have good corrosion resistance, their conductive properties and anti-oxidation capabilities are not as good as silver-plated switches.

In summary, silver-plated metal dome switches are suitable for high-end electrical appliance manufacturing fields that require high conductive properties due to their excellent conductive properties, anti-oxidation capabilities and long life.

In short, as an important electronic component, silver dome switches play an important role in electronic equipment and systems due to their good conductivity, reliable elastic recovery, corrosion resistance and oxidation resistance.

Posted in FAQ, Metal Domes | Tagged dome switch, metal dome | Comments Off

What is a marine switch panel?

Posted on November 28, 2024 by seo_li

What is a marine switch panel? A marine switch panel is an operating interface installed on a ship to control various equipment and systems. It usually consists of a series of switches, buttons, indicator lights, etc., which can realize the operation of equipment operation, internal lighting and environmental control. When the marine switch panel adopts membrane switch technology, it brings many advantages to the operation and control of the ship.

BEST Technology specializes in the production of various types of membrane switch panels, supports the design and development of different types of membrane panel switches, and has rich design and manufacturing experience.

What is a marine membrane switch panel?

A marine membrane switch panel is a membrane switch panel designed and used for ships, with specific characteristics and application scenarios.

A marine membrane switch panel is an operating system that integrates key functions, indicator elements, and instrument panels. It consists of four parts: panel, upper circuit, isolation layer, and lower circuit.

When the panel is not pressed, the membrane switch is in a normal state, its upper and lower contacts are disconnected, and the isolation layer isolates the upper and lower circuits.

When the panel is pressed, the contact of the upper circuit deforms downward, overlaps with the lower circuit and makes the circuit conductive. The conductive circuit gives a signal to realize its corresponding function. When the finger is released, the contact of the upper circuit rebounds, the circuit is disconnected, and the loop triggers a signal.

Marine membrane switch panels are widely used in various control systems and instrument panels of ships. They are moisture-proof, corrosion-resistant, shock-resistant and highly sealed, and can work stably in harsh marine environments. They are small in size, comfortable to press, easy to replace and low in cost, and are suitable for the automation and intelligent control needs of various ships.

What types of marine switch panels are there?

The types of marine switch panels mainly include the following:

Ordinary push-button switch: suitable for simple power on and off control.

Ignition key switch: used to start the engine or motor operation.

Multi-function combination switch panel: contains multiple independent small switches, which can operate multiple devices at the same time.

LED indicator switch: It has an indication function and can also be used as a small contactor to drive the work of electrical equipment.

Automatic water level switch: used in monitoring and controlling water level and water flow.

Pressure sensor controlled electric valve switch: mainly used for regulating and managing liquid pressure.

Double-pole double-throw switch: or relay coil control circuit board small toggle switch, etc.

What is the manufacturing process for marine switch panels?

The manufacturing process of marine membrane switch panels mainly includes the following steps:

Cutting: separating raw materials from larger area and volume raw materials.

Film production: This is an important link, involving the setting of the screen printer and the selection of the screen to ensure the quality and efficiency of the screen printing.

Plate making: by coating the photosensitive paste on the screen printing screen, and then using the film to complete the plate making work on the platemaking machine.

Silk screen printing: This is the core process of thin film panel manufacturing, involving printing the design pattern on the panel.

Mold production: using tools such as engraving machines, milling machines or laser cutting machines to make molds.

Cutting: using special tools and equipment to cut the shape of the thin film panel.

Assembly: Assemble the panel, surface glue, upper and lower lines, key glue and back glue into a whole.

Quality inspection: Perform quality inspection on the finished film panel to ensure that the product is qualified.

Material selection and characteristic requirements for marine membrane switch panel:

Panel layer: Usually use colorless and light-transmitting sheets such as PET or PC below 0.25MM, with high transparency, high ink adhesion, high elasticity, anti-folding and other characteristics.

Pad glue layer: used to closely connect the panel layer with the circuit layer, the thickness is generally between 0.02-0.05MM, with high adhesion and anti-aging properties.

Control circuit upper and lower layers: Use polyester film (PET), the thickness is generally within 0.05-0.175MM, and the most common is 0.125MM PET, and use a special process to screen print silver paste, carbon paste or gold paste to make it conductive.

Glue layer: PET double-sided adhesive is used, with a thickness of 0.05-0.2MM. When selecting materials, the overall thickness, insulation, feel of the circuit buttons and sealing of the product should be considered.

Back adhesive layer: Depending on the material to which the membrane switch is attached, ordinary double-sided adhesive, 3M adhesive, waterproof adhesive, etc. are often used.

These steps and material selections jointly ensure the manufacturing quality and performance of marine membrane switch panels.

What are the characteristics of marine switch panels?

The characteristics of marine membrane switch panels mainly include the following aspects:

Excellent sealing performance: The membrane switch is an integrally sealed part, and the contacts are not affected by the external environment. It can effectively prevent corrosion and oxidation, and at the same time prevent dust pollution, and is suitable for various harsh environments.

Small size and light weight: The weight of a general membrane switch ranges from a few grams to dozens of grams, and the thickness is generally about 1mm, which is very easy to carry and disassemble.

Beautiful: Modern silk screen printing technology allows membrane switches to be designed with various patterns and texts, and the appearance is beautiful and generous.

Strong durability: The membrane switch has a long service life, can withstand millions of press operations, and is not easy to wear.

Excellent conductivity: The circuit of the switch can be printed with carbon paste, silver paste, copper platinum, etc. The conductive layer can be folded at will and can withstand high-voltage electric shock without damaging its function.

Low cost: The price of the membrane switch is low and has a high cost performance.

Waterproof, oil-proof, anti-pollution, anti-static interference: Using special materials and technologies, the membrane switch has these protective functions and is suitable for various complex environments.

Good weather resistance and chemical resistance: It can maintain good performance within a certain temperature range and has good resistance to most chemicals.

These characteristics make the membrane switch perform well in the marine environment, can adapt to the complex environmental conditions at sea, and ensure the stable operation of the equipment.

Why Use a marine switch panel?

The main reasons for the use of marine membrane switch panels on ships include its simple structure, beautiful appearance, good environmental resistance and long service life.

First of all, the marine membrane switch panel has a simple structure and beautiful appearance, which can well adapt to the decorative style of the interior of the ship and enhance the overall aesthetics.

In addition, the membrane switch panel has good environmental resistance and can work stably in harsh environments such as humidity and vibration to ensure the normal operation of electrical equipment.

Secondly, the marine membrane switch panel has a long service life, which can reduce the frequency of maintenance and replacement and reduce the operating cost of the ship. Regular inspection and maintenance of the membrane switch panel, such as checking the appearance and wiring, cleaning the surface and interior, checking electrical equipment, fuses and protection devices, and grounding devices, can ensure its normal operation and service life.

Finally, the marine membrane switch panel has a wide range of applications on ships, which can control electrical equipment such as lights, motors, fans, etc., and improve the efficiency and safety of the ship.

In short, as an important part of ship control and operation, the performance and quality of the marine switch panel are directly related to the safety and operation efficiency of the ship. The marine switch panel using membrane switch technology has many advantages such as waterproof and moisture-proof, durable and reliable, beautiful plane, and convenient operation, and has been widely used in the field of ships.

Posted in FAQ, Membrane Switches | Tagged membrane switch, metal dome | Comments Off

What is the hole vent on the metal dome array?

Posted on November 27, 2024 by seo_li

What is the vent hole on the metal dome array? As the name implies, the vent is a hole set on the metal dome array to achieve ventilation. Its main function is to allow air to circulate between different parts of the metal dome array, thereby regulating environmental factors such as internal air pressure, temperature and humidity. In some specific application scenarios, the vent can also prevent static electricity accumulation, remove water vapor and impurities, etc.

BEST Technology uses high-quality metal materials, such as stainless steel, copper alloy, etc., which have good elasticity, conductivity and corrosion resistance, and can ensure the long-term and stable use of the product. From the design stage to the production process, it ensures that the final product fully meets customer expectations.

What is an air vent hole?

In the metal dome array, the vent refers to a hole set in the dome array structure for gas circulation. It is a specially designed channel that allows air or other gases to be exchanged between different areas of the dome array, or between the dome array and the external environment.

What is the hole vent on the metal dome array?

The shapes of vents are various, and the common ones are round, square, rectangular, etc. Circular vents are relatively easy to realize during processing, and their structure is relatively uniformly stressed, and they can better maintain shape stability when pressure changes. Square and rectangular vents may have more advantages in space utilization, especially in matching the shapes of other equipment components.

What is the function of the vent holes on the metal dome array?

During the use of the metal dome array, when the metal dome array is pressed or operated, the air below it will be compressed. The vent hole can discharge the compressed air smoothly to avoid the formation of a local high-pressure area below the metal dome array.

Similarly, when the metal dome array returns to its original state, the external air needs to be replenished to the space below in time. The vent hole can ensure the smooth flow of air, maintain the air pressure balance between the metal dome array and the external environment, ensure that the metal dome array can be elastically reset normally, and enable the key to quickly return to its initial state and prepare for the next operation.

Although the main function of the metal dome array itself is not to dissipate heat, in some electronic devices, the metal dome array is in close contact with heating components such as circuit boards as buttons or connecting parts. The vent hole helps to dissipate heat. When heat is generated inside the device, the flow of air through the vent hole can take away some of the heat and prevent excessive accumulation of heat in and around the metal dome array.

How to arrange the air vent hole?

There are many ways to arrange the vent holes in the metal dome array.

Center position layout: It is a common method to set the vent hole in the center of the pot piece. When the pot piece is pressed, the pressure is mainly concentrated in the center area, and the vent hole in the center can most effectively discharge the compressed air.

Edge position layout: The vent hole is arranged at the edge of the pot piece. The edge of the pot piece may be easier to circulate with the outside air. Setting the vent hole here can take advantage of the structural characteristics of the equipment to allow air to flow in and out naturally.

Evenly distribute multiple vent holes: For some larger pot pieces or application scenarios with high requirements for air pressure balance and air circulation, evenly distribute multiple vent holes. This arrangement method allows the air below the pot piece to be evenly discharged from multiple directions when it is pressed, avoiding excessive local air pressure.

Arrangement combined with the shape and structure of the shrapnel: Arrange the vent hole according to the shape and internal structural characteristics of the pot piece itself. This method can maximize the function of the vent hole without affecting the mechanical strength and elastic properties of the pot piece.

How to design the air vent hole properly?

There are three ways to make the vent hole on the shrapnel array, including:

1. Design the vent hole between the shrapnel and the gasket

The first way is the most popular and easiest to implement, which is to design it between the metal shrapnel and the gasket. In this way, we can design the vent slot anywhere, and the path can be long or short, depending on the distance between the two metal shrapnel. In this way, the vent slot must be located between the gasket between the two metal shrapnel so that the air can be discharged smoothly.

2. Open a small hole on the top of the ball fixture

If the space between the metal domes is limited, a small hole can be opened on the dome fixture to facilitate air circulation, which can also allow air to be discharged.

3. Punch a hole in the PCB

The shrapnel array or metal shrapnel is almost always assembled with PCB or flexible circuit. So a hole can be punched in the PCB, and in this way, air can flow out of this small hole.

Each of these vent locations has its own advantages and can be selected based on specific design considerations. The choice of vent location affects factors such as trigger force, key feel, and prevents the shrapnel array from sticking or poor responsiveness in the application.

What are the advantages of air vents?

1. Optimize key feel

Air pressure balance: When the pot is pressed, the air below it will be compressed. The vent allows the compressed air to be discharged smoothly, making the pressing process smoother.

Quick reset: After releasing the button, the outside air quickly enters the pot through the vent, helping the pot to quickly return to its original state.

2. Extend service life

Reduce the impact of internal pressure: In the absence of vents, the air below the pot is constantly compressed during repeated pressing of the pot, which will form internal high pressure. The presence of vents effectively avoids the accumulation of this internal pressure, allowing the pot to work under normal air pressure, thereby extending its elastic life.

Prevent water vapor and dust accumulation: In some environments, water vapor and dust can easily enter the device. The vents help maintain air circulation and reduce the retention of water vapor and dust under the pot, thereby reducing the possibility of damage to the pot by these factors.

3. Auxiliary heat dissipation function

Air convection heat dissipation: In electronic devices, the pot is often in contact with heat-generating components such as circuit boards. The vents can promote air convection, so that heat can be dissipated from the pot and its surroundings through the flow of air.

Avoid local overheating: Local overheating may have an adverse effect on the performance of the pot. The vents can prevent the temperature of the pot and its surrounding areas from being too high, and ensure that the pot works within a suitable temperature range.

4. Improve waterproof and dustproof performance

Combined with waterproof breathable membrane: The vents can be used with waterproof breathable membrane. The waterproof breathable membrane allows gas molecules to enter and exit through the vents, but can prevent water molecules and larger dust particles from entering.

What are the disadvantages of air vents?

Without protective measures, the waterproof and dustproof performance may be reduced, and some design and production costs will also be increased.

Water ingress risk: The presence of vents provides a channel for external liquid to enter the pot. Without proper protection, water can easily enter the pot under the vents.

Dust ingress risk: Dust can also enter through the vents. The accumulation of dust particles may interfere with the normal operation of the pot, especially in outdoor or industrial environments with a lot of sand and dust.

Increased design complexity: In order to ensure that the vents can achieve good ventilation functions while minimizing their negative effects, they need to be designed in coordination with other designs, which increases the difficulty and workload of the design.

Increased production costs: From a manufacturing perspective, the processing of vents requires additional process steps. Whether the vents are made by stamping, drilling or other forming methods, the production cost will increase.

Although the vents on the metal dome array may seem small, they play an important role in fields such as electronic equipment and precision machinery. By adjusting environmental factors such as air pressure, temperature, humidity and static electricity, the vents can improve the performance and reliability of the metal dome array and extend its service life.

Posted in FAQ, metal dome array, metal dome related | Tagged hole vent, metal dome, metal dome array | Comments Off

What is a Polyester Dome?

Posted on November 26, 2024 by seo_li

Polyester dome is a dome mainly made of polyester material. Polyester dome has excellent elastic recovery ability. Compared with metal dome, polyester dome is relatively soft and will not produce too strong rebound force, thus providing users with a more comfortable operation experience.

What material is a dome made of?

Phosphor bronze, tin bronze: have good conductivity and wear resistance, suitable for application scenarios requiring high conductivity and wear resistance.

Stainless steel: have high elasticity, corrosion resistance and wear resistance, suitable for use in harsh environments. Stainless steel domes are usually nickel-plated or silver-plated to improve their conductivity and appearance.

Beryllium copper: have high elasticity, high strength and good conductivity, suitable for application scenarios requiring high precision and stability.

Spring steel: have high elasticity and fatigue resistance, suitable for occasions requiring frequent deformation.

Brass: have good conductivity and corrosion resistance, suitable for application scenarios requiring good conductivity and corrosion resistance.

Domes are widely used in many fields such as industry, military, electronics and daily life. Its ingenious design and diverse functions make it an ideal choice for mechanical transmission, electrical connection or disconnection, pressure sensing and other functions.

What is a dome array?

A dome array is a component structure formed by arranging multiple domes together according to certain rules and layouts. The position, spacing and arrangement of these domes in the array are usually designed according to specific application requirements.

The spacing between domes is an important parameter of the dome array. The size of the spacing depends on the size of the dome, the elastic range and the requirements of the application scenario. If the spacing is too small, the domes may interfere with each other during operation, affecting their normal elastic deformation and function; if the spacing is too large, it will waste space and increase the size of the device.

The domes in the dome array can be of exactly the same specifications or a combination of multiple specifications according to different functional requirements. When all domes have the same specifications, the manufacturing and installation are relatively simple, and they are mainly used to realize multiple contact points with unified functions, such as membrane switches with multiple buttons of the same function.

In the connection between circuit boards or the electrical connection inside electronic equipment, dome arrays can be used as a reliable connection method. Through the elastic contact between the dome and the contact point, good electrical conduction is ensured, and it can adapt to a certain degree of vibration, displacement, etc., to ensure the stability of the connection.

What is a Polyester Dome?

Polyester metal dome is a composite elastic element. Its structure is layered. The outer polyester layer protects, insulates and assists deformation, and the inner metal core provides elasticity. The two are closely connected by a special process. Polyester has excellent insulation, corrosion resistance and flexibility, while metal has good elasticity and (partially) high conductivity.

During operation, the external force first causes the polyester to deform and buffer, and then the metal leads the elastic deformation. After the external force is removed, the metal drives it to restore its original state. It is commonly used in electronic equipment buttons, electrical connection components and automotive electronic equipment. It provides reliable elastic feedback, stable electrical connection and other functions, adapts to complex working conditions and prolongs service life.

What does Polydôme consist of?

Similar to metal dome, polyester dome (Polydome) is also composed of three parts:

Mylar: Made of PET (polyester), located on the top of Polydome, the normal color is transparent, and conductive ink and gaskets can be seen. Normal thickness is 0.10mm and 0.125mm.

Conductive ink: Located under the raised semicircular area of ??Mylar, it is made of silver and carbon ink. The lower the resistance value of the conductive ink, the higher the percentage of silver, and vice versa. Silver thickness: 0.004-0.006mm; carbon: 0.005-0.006mm.

Spacer: Also made of PET (polyester), located at the bottom of Polydome, normal color is white or transparent. Regular thickness is 0.15mm, 0.20mm.

Rubber glue: Located on the top of Mylar, normal color is green, thickness is 0.125mm, can be firmly attached to silicone/rubber keys, membrane switch panels.

Bottom glue: In fact, if the customer wants to stick Polydome to the circuit board, the additional glue is already together with the Spacer, so that the glue cannot be separated from the Spacer.

Why use Polyester Dome?

Advantages of polyester film buttons (compared with conductive silicon buttons):

1. High reliability

2. Longer service life

3. Better click feeling

4. Design flexibility

5. Easier to assemble

Advantages of polyester film dome (compared with metal dome array):

1. Easy to recover after bending without affecting function

2. Lower material cost than metal dome

3. The same diameter dome has a larger adjustment range of force and stroke

4. Suitable for products that require smaller buttons and less pressure

5. PAD that does not damage the circuit can better protect the onboard circuit and extend the service life of the product

6. Easier to assemble

7. Excellent pressure stability

Disadvantages of polyester dome (compared with metal dome array):

1. Poor fatigue resistance and easy to damage after repeated operation.

2. Small stroke/stroke range

3. Low operating voltage/current

4. Large contact resistance

5. Small size

6. Short service life: metal dome >= 1 million times

7. Fixing performance: needs to be fixed to the product with screws.

8. The click feeling is not very good

9. The installation cost is high, and even the sample production requires tools

How Polyester Dome (Polydôme) works?

The polyester film dome will be placed above the PAD of the PCB, FPC or other circuit board. When the polyester film dome is pressed, the center point of the dome switch will be pressed down in the direction of the PAD of the circuit board, and the silver ink under the dome will be connected with the circuit on the circuit board, thus forming an electronic circuit, so that the circuit is closed and the entire product can work normally.

If you use Polydome with rubber glue, or glue on the bottom, the assembly method is roughly the same as that of the metal dome array.

Instructions for using Polyester Dome (Polydome)

1. Do not use it in a high temperature environment (>40?) for a long time, otherwise the polyester dome will lose its elasticity.

2. Do not use it in an extremely low temperature environment (<-25?) for a long time, otherwise it will affect the service life of the dome.

3. Do not use it outdoors for a long time.

4. Do not press the dome with sharp or hard objects.

As a new type of elastic element, polyester dome has good elasticity, corrosion resistance, insulation performance, light weight and high strength. The combination with metal dome has expanded its application field and improved its performance advantages.

Posted in FAQ, metal dome array, metal dome related | Tagged metal dome, metal dome array, Polyester Dome | Comments Off

What is adhesive sheet metal?

Posted on November 25, 2024 by seo_li

Adhesive sheet metal is to bond two or more layers of metal sheets together with a specific adhesive. Metal dome can be manufactured through precision machining processes with high-precision size and shape. This enables the metal dome to be accurately positioned and installed in the adhesive metal sheet, ensuring the stable performance of the adhesive metal sheet.

BEST Technology supports different numbers of metal dome to bond them to different materials, has multiple mounting lines, and supports small batch proofing design.

How to adhesive metals?

There are mainly the following methods of metal bonding:

Welding: Welding is one of the most common methods of metal bonding. Commonly used welding methods include arc welding, TIG welding, etc. Welding can make metals tightly adhesive together.

Glue: Different types of glue can be used for different types of metals. When using glue, it is necessary to remove oil and oxides on the metal surface to ensure the bonding effect.

Screws: Screws are a common method for fixing metals. Screws are used to fix different parts together instead of tightly bonding metals.

Rivets: Using rivets to fix two pieces of metal together requires the use of special rivet tools, which can provide a reliable connection.

Bolts and nuts: Clamp two pieces of metal together with bolts and nuts. You need to drill holes in the metal and make sure the bolts and nuts are firmly tightened.

Solder: Use solder to bond two pieces of metal together. It is suitable for some light applications, but the connection strength may not be as good as electric welding.

Mechanical connection: Use mechanical methods such as threaded connection and slot connection to connect metals together, such as nuts and bolts, circlips, etc.

Cold solder: Cold solder, also known as metal adhesive, is a special material that can bond different metals together. When used, just apply it to the metal surface and then connect the two metals together in a short time.

What is dome metal?

Dome metal, also known as metal dome, is a thin sheet of metal material (such as beryllium copper, stainless steel, spring steel, brass, etc.).

It has a specific shape and size, can be deformed when subjected to external force, and quickly return to its original shape after the external force is removed. This property makes metal dome perform well in achieving mechanical transmission, electrical connection or disconnection.

High elasticity: metal dome can maintain stable rebound ability after repeated deformation.

Excellent conductivity: metal itself has good conductivity, which can quickly conduct the circuit when the key is pressed to realize signal transmission.

Low contact resistance: the contact resistance between the metal dome and the conductive contact is low, ensuring good circuit conduction effect and reducing signal loss and energy loss.

Corrosion resistance: by selecting suitable metal materials (such as stainless steel), the metal dome can be used for a long time in harsh environments without corrosion.

Strong wear resistance: metal dome has high hardness and strong wear resistance, can withstand long-term use without wear and tear, and extend service life.

High precision: modern manufacturing technology enables metal dome to achieve extremely high size and shape accuracy to meet the needs of precision equipment.

Good stability: after rigorous design and testing, metal dome can maintain stable performance under various working conditions.

Strong customizability: metal dome of different shapes, sizes and elasticity can be designed according to specific application scenarios.

What is the best adhesive for metal to metal construction?

The adhesives commonly used for metal and metal structures have their own advantages and disadvantages, and there is no absolute best.

1. Epoxy adhesive

Principle: It is like mixing two special things together. They will react and finally become a very strong, net-like thing that sticks the metal tightly.

Advantages: It can stick the metal very firmly, not afraid of the erosion of various chemicals, and can also change some of its characteristics according to needs, such as making it softer or harder, and drying faster or slower.

Disadvantages: It dries too slowly, sometimes it takes several hours or even several days to dry completely. Another thing is that it is brittle after drying, and it may crack if it encounters impact or vibration.

2. Acrylate adhesive

Principle: Rely on something that can make it change quickly, so that it can quickly change from liquid to solid and stick the metal together.

Advantages: It also has a certain resistance to changes in temperature and humidity, and it is not easy to fail due to environmental changes. It is also elastic and not easy to be pulled apart.

Disadvantages: There will be a very pungent smell when sticking, which is not very comfortable to smell. When it encounters some organic solvents, it may not work well, and the viscosity will decrease.

3. Polyurethane adhesive

Principle: The two main components interact to generate an elastic polymer to stick to metal.

Advantages: It is very elastic and tough, can adapt to the deformation and vibration of metal, and will not break easily. Even if you apply force repeatedly, it can last for a long time. It can also be used normally in cold places without becoming hard and brittle.

Disadvantages: It is very afraid of moisture. When the humidity is too high, it may not stick well or stick firmly. When it first sticks, the force is not very strong, and it takes a long time to achieve the best effect.

When actually using it, you should think carefully about what the metal is like, what kind of environment it will be used in, how strong it should be stuck, and how fast it can be done, and then choose the right adhesive. Moreover, before sticking, be sure to clean the metal surface, grind it, and remove all oil and dirt, so that it can stick well.

How to assemble metal dome on PET adhesive sheet?

To assemble metal domes on PET adhesive sheets, the following methods are usually used:

1. Manual assembly:

Prepare tools and materials: PET adhesive sheets, metal domes, tweezers, glue, etc.

Clean the surface: Make sure the surfaces of the PET adhesive sheets and metal domes are clean, free of oil and dust.

Apply glue: Apply an appropriate amount of glue to the location where the metal dome needs to be installed on the PET adhesive sheet.

Place the metal dome: Use tweezers to carefully place the metal dome on the location coated with glue, making sure that the dome is aligned with the adhesive sheet.

Press and fix: Gently press the metal dome to make it fully contact with the PET adhesive sheet and ensure that the glue is evenly distributed.

Wait for drying: According to the instructions of the glue, wait enough time for the glue to dry and cure to ensure that the metal dome is firmly fixed on the PET adhesive sheet.

Use automated equipment: If large-scale production or improved assembly efficiency is required, consider using automated equipment, such as an automatic dome press. This machine can realize automatic feeding, positioning and pressing of dome, improving production efficiency and quality.

How to make a metal dome array?

The process of making a metal dome array can be divided into the following steps:

Design: Use software tools to design according to the specifications, shape and size of the required metal dome array. Consider factors such as the material, thickness, elasticity, etc. of the dome.

Material preparation: Select suitable metal materials, such as stainless steel, copper, etc. Ensure that the material has good elasticity and conductivity.

Make molds: Make molds for metal dome arrays according to design requirements. The molds can be made using metal processing techniques such as milling and electrospark machining.

Stamping or cutting: Put the metal material into the mold, and use equipment such as a stamping machine or laser cutting machine to stamp or cut to make a single metal dome.

Surface treatment: Perform surface treatment on the metal dome, such as polishing, electroplating, etc., to improve its appearance and corrosion resistance.

Assembly: Assemble the prepared metal domes according to the design requirements to form a metal dome array. Welding, bonding or other connection methods can be used.

Testing: Test the prepared metal dome array, including elasticity test, conductivity test, etc., to ensure that its performance meets the requirements.

Packaging: Pack the qualified metal dome array for transportation and storage.

It should be noted that the specific steps for making metal dome arrays may vary due to different design requirements and production processes. During the production process, operations should be strictly carried out in accordance with relevant standards and specifications to ensure product quality and safety.

Adhesive metal plates can combine the advantages of different metals. Different metal combinations and adhesives can be selected according to different application requirements to achieve customized performance. In adhesive metal plates, metal dome can provide additional strength and reliability to the material and increase the service life of the material.

Posted in FAQ | Tagged metal dome, metal dome array | Comments Off

What is a surface mount switch?

Posted on November 22, 2024 by seo_li

A surface mount switch is an electronic switch mounted on a PCB using surface mount technology. It achieves on-off control of the circuit by directly soldering the switch components on the surface of the PCB. Compared with traditional plug-in switches, surface mount switches have the advantages of small size, light weight, high mounting density, and strong reliability.

BEST Technology has multiple surface mount lines and specializes in manufacturing various types of spring switches, supporting small batch proofing design. The products produced have many advantages, such as good elasticity, fast response speed, and long life.

What does surface mount mean?

Surface mount technology is a technology that directly mounts electronic components with no pins or short pins on the surface of the PCB. This technology solders the components to the pads of the PCB through methods such as dip soldering, thereby realizing the assembly of electronic components.

Surface mount components are usually smaller, thinner, and can achieve higher assembly density, making electronic products smaller and more compact, meeting the requirements of modern electronic products for miniaturization and portability. The welding points are firm, which reduces the failures caused by loose pins, cold soldering and other problems, and improves the reliability and stability of electronic products.

What is surface mount switch?

A surface mount switch is an electronic switch component designed and manufactured based on surface mount technology.

1. Structural features

Miniaturization: Its design is to meet the needs of modern electronic equipment for lightness, thinness and shortness, and the overall size is extremely small.

Contact structure: The key components such as internal contact points and shrapnel are all made of high-precision processing and special materials to ensure good conductivity and elasticity.

2. Working principle

Mechanical button type: When the button is pressed, the shrapnel or contact under the button is deformed, so that the originally disconnected circuit is closed and the current can pass; after releasing the button, the shrapnel relies on its own elasticity to restore its original state, and the circuit is disconnected again.

Touch sensing type: Using the capacitance effect of the human body, when the finger touches the surface of the switch, it will change the capacitance value of the touch area, thereby triggering the induction and control logic of the internal circuit to realize the on and off of the circuit.

Sliding type: By sliding components such as sliders or rollers, the connection state of internal contacts is changed to achieve the conduction or disconnection of different circuits.

3. Performance advantages

High precision and high reliability: Advanced technology and strict quality control in the manufacturing process make surface mount switches highly consistent and stable.

Good high-frequency performance: Due to short pins and small parasitic parameters, surface mount switches perform well in high-frequency circuits, with fast signal transmission speed and low loss, which can meet the requirements of modern high-speed electronic equipment for signal transmission.

What is the use of surface type switch?

Surface mount switches have a wide range of applications in many fields, mainly including the following aspects:

Household appliances: Surface type switches are widely used in household appliances, such as refrigerators, washing machines, air conditioners, etc.

Automotive industry: In the automotive industry, surface type switches are often used in smart surfaces of car interiors, such as touch switches.

Electronic communications and: In electronic communications and measuring instruments, surface type switches are used to control the switching function of equipment.

Industrial control: In industrial control and medical equipment, surface switches are used to control the start and stop of equipment. They are simple to operate and highly reliable.

How does surface mount work?

First, prepare surface mount components with pins or electrodes at the bottom or side. Then, solder paste is printed. According to the design of the PCB pad layer, a steel mesh is made so that the solder paste can be applied to the pad through the steel mesh.

Then the SMT machine absorbs the components, places them on the corresponding pads of the PCB after identification, positioning, movement and precise alignment, and places them for misunderstanding detection and correction.

After that, soldering and curing are carried out. Reflow soldering is mostly used. By controlling parameters such as temperature, the solder paste is melted to form solder joints to achieve connection. In some cases, wave soldering is used.

Finally, inspection and testing are carried out, including appearance, solder joint and function inspection to ensure product quality and normal operation of the circuit.

What is an SMD switch?

An SMD switch refers to a switch packaged with surface mount technology. SMD switches are characterized by small size, light weight and high reliability, and are widely used in electronic devices such as mobile phones and digital cameras.

The package form of SMD switch is flat, usually directly pasted on the surface of the circuit board through the patch process, without inserting holes on the circuit board. This packaging method makes SMD switch occupy less space in electronic equipment and is suitable for equipment with limited space.

Due to the characteristics of small size, light weight and high reliability of SMD switch, it is widely used in electronic equipment such as mobile phones and digital cameras that require miniaturization and high reliability. These characteristics of SMD switch make it one of the indispensable components in modern electronic equipment.

Why use surface mount technology?

The main reasons for using surface mount technology (SMT) include the following:

Miniaturization and lightweight: SMT technology makes electronic components smaller and lighter, so that electronic products can be designed to be more compact and lightweight.

Production efficiency and automation: The SMT process is highly automated, suitable for large-scale production, can significantly reduce labor costs, and has high production efficiency.

High reliability: The lead length of SMT components is shorter, which reduces inductance and capacitance, improves electrical performance, and reduces failure rate and improves product reliability.

Adapting to the development of modern electronic components: Integrated circuits (ICs), especially large-scale and highly integrated ICs, are widely used in modern electronic devices, so SMT technology has become a necessary assembly method.

Good high-frequency characteristics: SMT components perform well in high-frequency circuits and are suitable for electronic devices that require high performance.

What is surface mount advantages and disadvantages?

Surface mount technology has the following advantages and disadvantages:

Advantages

Miniaturization: Using surface mount technology allows electronic components to be directly mounted on the PCB surface without drilling, greatly reducing the size and space occupied by components, significantly improving assembly density, and making electronic products more miniaturized and thinner.

High performance: Short or no pins on components reduce the delay and parasitic effects of signal transmission, making the high-frequency performance of the circuit better, effectively reducing electromagnetic interference and radio frequency interference, and improving the speed and quality of signal transmission.

High reliability: The solder joint defect rate is low, and the components are tightly connected to the PCB. When subjected to external forces, it is not easy to loosen, fall off or have poor contact, and can adapt to harsh working environments.

High production efficiency: It is easy to realize automated production, which greatly improves production efficiency and shortens production cycle. It is especially suitable for mass production and can meet the needs of rapid market updates.

Cost-effectiveness: In mass production, production efficiency is improved, material waste is reduced, and labor costs are reduced.

Disadvantages

Difficult maintenance: The components are small in size and the pin spacing is narrow. Once problems such as poor welding or component damage occur, it is difficult to locate and operate during rework and repair.

Heat dissipation problem: For some high-power components that generate a lot of heat, surface mounting may not be conducive to heat dissipation, because the components are closely attached to the PCB, and the heat is not easy to dissipate, which may cause the temperature of the components to be too high.

High requirements for surface quality: The quality factors such as the finish and flatness of the PCB surface have a great influence on the welding effect.

In short, the spring switch occupies an important position in the surface mount switch. Its characteristics such as small operating force, good feel, long life, and small size bring many advantages to the surface mount switch. It not only improves the performance and reliability of surface mount switches, meets the high requirements of modern electronic devices for operating experience, but also helps to achieve miniaturization design, making electronic devices lighter and more portable.

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