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What is PCB with Metal Dome

Metal shrapnel (also known as pot or piece, metal dome, snap dome), made of ultra-thin (0.05mm-0.1mm thickness) and ultra-thick (usually high hardness) stainless steel 301 or 304 material. Metal dome is an important part of the PCB membrane switch.

They are momentary switch contacts that become normally-open tactile metal dome switches when used in conjunction with a printed circuit board (PCB).

PCB is also known as printed circuit boards or pcb board because it is made by electronic printing.  A printed circuit board is a substrate for assembling electronic components and is a printed board on which a point-to-point connection and a printed component are formed on a general-purpose substrate in a predetermined metal core printed circuit board design.

Metal domes can be divided into several groups: round metal dome, triangle metal dome,  rectangular metal dome, four-leg metal dome(cross shape), square shape metal dome and other special shapes. PCB membrane switches are widely applicable. It can be applied in areas including mobile phones, diagnostic equipment, industrial controls, test equipment, and measurement equipment, etc.

Advantages of Our PCB with Metal Dome

Making smaller and thinner packages possible

Dome switch PCB with high product reliability

Low-profile and lightweight design

Membrane PCB with consistent tactile response

Actuation forces are available to meet any needs of applications

Metal dome switch which is able to be used even in the rough environment

Applications Of metal core pcb design with Metal Dome

CD player

Focusing on three-dimensional assembly characteristics of flexible circuit boards and thin thickness.

The mobile phone

Easy connection of the battery, microphone, and buttons and into one. Focusing on the flexible circuit board lightweight and thin thickness. Being able to effectively save the volume of products.

Computer and LCD screen

Using the one-line configuration of thin thickness and flexible circuit boards.

Disk drives

No matter it is or diskette or the hard disk, it is dependent on FPC high softness and thickness of the 0.1 mm slim.

The latest applications

Hard disk drives (HDDs, hard disk drive) of the suspended circuit and the components of xe packaging board, etc.

What we can do in PCB custom membrane keypad

We are one of the trustworthy best cheap pcb manufacturer. However, PCB assembly is also a very important component for metal dome membrane switch. To meet customers' requests and demands, we have a professional team to help the customers change the PCB circuit into a Polyester printing circuit. There are some metal core pcb prototype designs with space limit which need to be changed from the Polyester circuit or flexible circuit into Double-side or Multi-layer's PCB. That's also one of the services we can provide. In addition, Komkey can provide some PCBA services, such as solder the components and assembling metal dome and different layers' (Overlay, Spacer) in PCB. To learn more about

pcb manufacturing price,and we also have bulk pcb and tock pcb ,we provide wholesale pcb ,please contact us!

Hexagonal steel tube is a kind of hexagon metal tube   which is made of steel. It is also called special-shaped steel pipe. Among them, there are octagonal, rhombic and elliptical tubes.

hexagon tube is the general name of steel pipe with other cross-section shapes besides circular pipe. It has welded special-shaped pipe and seamless special-shaped pipe. Because of the material relationship, stainless steel special-shaped pipe is generally more than 304 material, 200, 201 material hardness strong wind, it is more difficult to shape.

Hexagonal steel tube is widely used in various structural parts, tools and mechanical parts. Compared with circular pipe, stainless steel special-shaped pipe generally has larger inertia moment and section modulus, has greater flexural and torsional resistance, can greatly reduce the weight of the structure and save steel.

Hexagonal steel tubes are generally distinguished according to the broken section and the overall shape. They can be generally divided into elliptical, triangular, hexagonal and special-shaped pipes. Diamond shaped pipe, stainless steel pattern pipe, stainless steel U-shaped pipe, D-shaped pipe, stainless steel elbow, S-shaped pipe elbow, octagonal shaped pipe, semi-circular shaped steel circle. Hexagonal shaped steel pipe with unequal edges, plum blossom shaped steel pipe with five petals, double convex shaped steel pipe, double concave shaped steel, melon seed shaped steel pipe, conical shaped steel pipe, corrugated shaped steel pipe, etc.

CLASSIFICATION OF SPECIAL-SHAPED PIPE AND HEXAGON STEEL TUBING

Hexagonal steel is a kind of section steel, also known as hexagonal bar, bar with regular hexagonal section. The nominal size is the opposite side length S. Hexagonal steel can be used to form various stress components according to the different needs of the structure, and it can also be used as a connection between components. It is widely used in various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks and warehouse shelves.

Special-shaped pipes are generally distinguished according to the broken section and overall shape. They can be generally divided into elliptical special-shaped pipes, triangular special-shaped pipes, hexagonal special-shaped pipes and so on. Diamond shaped pipe, stainless steel pattern pipe, stainless steel U-shaped pipe, D-shaped pipe, stainless steel elbow, S-shaped pipe elbow, octagonal shaped pipe, semi-circular shaped steel circle. Hexagonal shaped steel pipe with unequal edges, plum blossom shaped steel pipe with five petals, double convex shaped steel pipe, double concave shaped steel, melon seed shaped steel pipe, conical shaped steel pipe, corrugated shaped steel pipe, etc.

Classification of hexagon steel tubing:

Classification of material used for hexagonal steel pipes: 20, 45, 16 manganese and other different materials have different uses.

Hexagon steel tubing is an outer hexagonal steel pipe. It is a kind of special-shaped steel pipe. It is mostly used in the processing of nuts and mechanical fittings. Hollow hexagonal bar is the general name of the steel pipe with outer hexagonal section and inner circular section. It has welded and seamless special-shaped pipe. Because of the material relationship, can be divided into ordinary carbon steel heterosexual steel pipe, hexagon steel tube.

EXCELLENT PERFORMANCE OF SEAMLESS HEXAGONAL STEEL TUBING

How much do you know about seamless hexagonal steel tubing? Seamless hexagonal steel tubing is a type of stainless steel products, which has been widely used in construction, mechanical manufacturing and other fields. The following seamless hexagonal steel tubing manufacturer gives you a detailed introduction of the function and application scope of seamless hexagonal steel tubing.

Seamless hexagonal steel tubing is a hollow square section light-weight thin-walled steel tube, also known as steel refrigeration bending profile. It is made of Q235 hot-rolled or cold-rolled strip or coil as base material by cold bending, forming and high frequency welding. Except for wall thickness increasing, the corner dimension and edge flatness of hot-rolled super-thick stainless steel square pipes reach or even exceed the level of resistance welding cold-formed stainless steel square pipes. It has excellent mechanical function, weldability, cold, hot working and corrosion resistance. It has excellent low temperature resistance.

As one of the most professional hexagonal steel tube suppliers in China, our seamless hexagonal steel tubing are used in construction, mechanical manufacturing, steel construction and other projects. It was also used in many other fields such as shipbuilding, solar power support, steel structure engineering, electric power engineering, power plants, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power plant equipment, lifting and transportation machinery and other comparative purposes, Welded structural parts with high load and so on.

Sheet metal processing or sheet metal fabrication includes: folding, shearing, punching, welding, riveting, splicing and other processes. In general, the process of forming a sheet by hand or mechanical is called sheet metal processing. Sheet metal processing is to cut and bend metal materials into various shapes and their thicknesses can vary significantly. According to the materials, sheet metal fabrication can be divided into several types, including aluminum sheet metal fabrication, stainless steel fabrication and brass fabrication.

Sheet metal process:

Sheet metal processing drawing design -> Laser processing or (CNC stamping) -> Bending -> Welding Molding -> Electrostatic powder spraying or (liquid paint) -> Packaging and shipping.

1. Drawing design:

In general, the customer provide drawings or samples, then our engineers perform the measurement, design, and development, and form the machining decomposition map and assembly drawing to the production department for processing.

2. Laser processing:

It has a large laser cutting machine, it can be cut by laser cutting  such as carbon steel, stainless steel, etc material. After the workpiece is processed, the section is neat, smooth and beautiful, and the size is accurate. It has advantages for the workpiece with arc. CNC stamping can not replace the processing method.

3. CNC stamping:

With imported turret CNC punching machine, CNC punching is mainly for the thickness of product processing materials, generally suitable for materials below 2.5mm. Sheet metal processing workpieces have more holes or need to open special molds to process the workpiece. CNC punching has a certain cost advantage.

4. Bend:

After the workpiece is cut, if most of them need to be bent and formed, the CNC bending machine not only has a fast speed, but also the workpiece is processed more accurately.

5. Welding molding:

The workpiece needs to be assembled and formed after cutting the material, and the assembly method is various. Some are directly formed by non-welding processes such as screws and riveting. Generally, the mechanical casing is made of welding, and the company adopts argon arc welding, bump welding, carbon dioxide welding, etc., we will polished them after welding, so that the workpiece is relatively firm and beautiful.

6. Electrostatic powder spray:

Electrostatic powder spraying is mainly for carbon steel workpieces. In the process, oil removal and derusting, surface cleaning, phosphating, electrostatic powder spraying and high temperature baking are generally carried out. After processing, the surface of the workpiece is beautiful, it will not rust within a few years, and the cost is low.

Liquid paint: This process differs from electrostatic powder spray. It is mainly used for large workpieces. It is convenient and low-cost to use liquid paint when it cannot be handled. The liquid paint is divided into two steps, and the primer is applied to the paint after the workpiece is processed.

7. Packaging and shipping:

100% inspection before packaging and inspection data.

Advantages of Sheet Metal

Sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, large-scale mass production performance, etc. It has been widely used in the fields of electronics, telecommunications, automotive industry, medical equipment and so on. For example, in computer cases, mobile phones, and MP3s, sheet metal is an essential part.

Why Choose Us for Sheet Metal Fabrication?

We have a complete set of advanced CNC sheet metal fabrication equipment, including 5 imported, high-efficiency and precision CNC punching machines, 3 CNC shearing machines, 3 CNC bending machines, 30 sets of common punching machines, welding robots, etc. We have sheet metal manufacturing line, technicians with rich experience in sheet metal processing, complete production equipment, and rich production experience and strict quality management system, providing a strong technical guarantee for fast, accurate and high quality order fulfillment. With advanced equipment and experienced operators, we also provide custom metal fabrication.

If you are looking for reliable and professional sheet metal fabrication companies  that can provide you with high quality china sheet metal fabrication services , please contact our professional team at info@duchgroup.com or contact us using the inquiry form on this website, we will provide quotes and suggestions free of charge.

Duch Group Provides customers with competitive solutions such as china rapid prototyping, mass production, small batch production, 3D printing, mold making, and injection molding. With more than 20 years of extensive production experience in the rapid prototyping industry, it is the world's largest rapid prototyping service company.

Friable Diamond

Each Particle is with sub-crystal structure. Irregular and Very rough surface. New cutting edges come out during working.

Also available in electroless plating of both nickel (30% and 56% by wt.) and copper (50% by wt.) allowing for better crystal retention in both phenolic and polyimide bond systems.

Application:

For Resin Bond products system

Application: grinding tungsten carbide, ceramics, glass, and other non-metal materials.

 EA-R 15

Rough and very irregular, Highest Friable, Yellow Green Color

Best self-sharpening performance and high thermal stability, suitable for creep grinding, the good choice for high precision grinding where premium surface finish and form remaining are demanded.

Available sizes: 60/80 through 400/500

 EA-R23

Irregular, medium-high Friable, Yellow Green Color.

Good combination of high free cutting and high surface finish. The first choice for the products with critical cost.

Available sizes: 60/80 through 400/500

 EA-R21

Irregular, low Friable, light Green Color

Similar to EA-R23

Available sizes: 60/80 through 400/500

 ED-B100

Semi-blocky, very low friability, Black

Premium performance in thermal stability

For Vit bond system with good profile retention and sharpness

Available sizes:

EGrind Abrasives is professional in diamond and CBN products with over 50 years experience. We sincerely invite and welcome people from all around the world to invest and create more values together.

Specifications of the University Challenge Coins :

Material: Copper

Logo: Embossed & Debossed

Color: Hard Enamel

Plating: Nickle Plating

Size: 45*45mm

Donghong Craft is a challenge coin maker for 35 years. Welcome to contact us for more information or get free quotations for your custom designs!

Spoon And Fork Wedding Souvenir

Material: Zinc Alloy

Size: 7.5*14CM

Usage: Wedding Souvenir Gift , Home Decor ,Tableware

Packing: Paper Box (according to yout requirements)

Specifications of softball medals:

Material: Zinc Alloy

Plating: Copper Plating

Process: Die Cast

Coloring: Soft Enamel

Donghong is a professional maker of all kinds of sports medals since 1984. Our Strengths:

Excellent quality, competitive price, timely shipment, professional customer service, professional one stop solution service. Welcome to contact us for cheap softball medals!

Product Information:

Material: Brass

Color: Soft Enamel

Plating: Gold Plating

Type: Bullet Back

Logo: Embossed & Debossed

Welcome to contact us to custom rotary international cufflinks! You can send email to order@dhmedal.com or call us by 86-769-22900190!

Specifications of the queensland police badge:

Material: Twill Fabric+ Rayon/Nylon Yarn

Logo: Woven

Border: Merrowed Edge

Backing: Iron On

We, Donghong Craft, a professional military patches manufacturer which has queensland police badge for sale and other various custom design military patches for troops, military branches, police department, fire & rescue etc. Welcome to contact us for quotations!

The pewter pins are very popular because of its cheap cost and quick delivery time as well as the great present on the full 3D effect. While as the world strict requirement on the lead content of the metal gifts, the pewter lapel pin has been used less and less. Actually, we do have the #0 pewter which could meet the lead content requirement set up by different countries or associations, but the cost of this kind of pewter is much expensive. For some design, it would be even more expensive than bronze material. But the unique presenting way for the full 3D or hollow designs makes the spin cast pewter lapel pin irreplaceable.

There are two things we'd like to share about the pewter pins:

First, the pewter is pretty soft. So if they are many cutouts on the designs and the metal lapel pin would be used separately without any background support, then we suggest you don't choose the pewter process for your lapel pin in case it breaks easily.

Second, if the metal lapel pin would be used to assemble with other item and requires very accurate shape or size, then we don’t suggest you choosing pewter process as well since for the spin cast lapel pin, the mould is silicon. It's not as stable as the steel mould.

Donghong Craft is professional maker of pins and badges with 35 years experience. Welcome to contact us for more information or get quotation for your custom pewter pins! High quality, competitive price and small MOQ!

Specifications of the Pewter Airplane Keychains :

Material: Pewter

Design: 3D Airplane

Color: No Color Filled

Plating: Antique Silver Plating

Donghong Craft is a professional keychain maker for 35 years. We can custom all kinds of key chains with high quality and competitive price. Welcome to contact us for more information or get quotations for pewter keychains or airplane keychain!

The Ontario Regiment (RCAC) is a Primary Reserve armoured reconnaissance regiment of the Canadian Army.

Specifications of the Ontario Regiment Cap Badge :

Material: Bronze

Design: 3D, Cut Outs

Plating: Antique Bronze Plating

No Color Filled

Attachment: Clip

Donghong Craft is specialized making high quality pins and badges with 35 years experience. Welcome to contact us for more information or get quotation for your custom designs military badges / Army Badges!

Book is one of our good friends . From the books , you can find the answers to your questions or experience a totally different life. That's wonderful, isn't it? Custom cheap metal bookmark with business logo right now!

If you are reading a book , cheap metal bookmarks are necessary when you forget which page you read last time or the valuable chapter you signed. It can help you find them out quickly.

I think metal bookmark is a good choice as gift because it always reminds people to read more and learn more. Who would refuse knowledge?

Welcome to contact us for quotations of custom metal bookmarks!

Usually there are three types of leather badge holders: leather ID badge holders, leather badge wallet and leather badge holder with metal emblems.

Leather ID badge holder is widely used in office, school, exhibition,travel,etc.. Leather badge wallet and leather badge holder with metal emblems are more often used by authority departments like secutiry,police,sheriff,etc..Most of our customers want the metal badges to fit the leather badge holder perfectly, so they will order the badge holders along with the metal badges.

Specifications of our custom leather badge holder:

Material: Genurine leather, synthetic leather

Logo process: Printing, stamping, debossed

Features: wear resistance, soft ,waterproof,etc..

Tips for how to maintain the leather badge holder:

Avoid overexposure to the sun.

Keep it in a cool and dry place when not in use.

Keep from abrasives that can scuff or cut it.

Add some moisture to leather.

Welcome to contact us to buy leather badge holder!

Specifications of karate medals:

Material: Zinc Alloy

Plating: Antique Copper Plating

Process: Die Cast + Embossed Pattern & Text + Soft Enamel Coloring

Size: 45*45mm

Donghong is a professional maker of all kinds of sports medals since 1984. Our Strengths:

Excellent quality, competitive price, timely shipment, professional customer service, professional one stop solution service. We have karate medals for sale, welcome to contact us for cheap custom sports medals!

Specifications of jiu-jitsu medals:

Material: Zinc Alloy

Plating: Antique Gold , Antique Silver, Antique Copper

Process: Die Casting + Embossed Pattern

Coloring: No Coloring Filled

Size: 45*45mm

Donghong is a professional maker of all kinds of sports medals since 1984. Our Strengths:

Excellent quality, competitive price, timely shipment, professional customer service, professional one stop solution service. We have jiu jitsu medals for sale, welcome to contact us for cheap custom sports medals!

Specifications of the gothia cup medals:

Material: Copper

Design: 3D,Hollow

Plating: Antique Copper Plating

Coloring: No Coloring

Size: 45*45mm

Donghong is a professional maker of all kinds of sports medals since 1984. Our Strengths:

Excellent quality, competitive price, timely shipment, professional customer service, professional one stop solution service. Welcome to contact us for cheap custom sports medals!

Specifications of Custom Glow In The Dark Patches:

Material: Twill Fabric + Rayon/Nylon Thread

Border: Merrowed Border

Pattern: Embroidered

Backing: Sew On

Donghong Craft offer custom service of 2D or 3D embroidery patches. Welcome to contact us for quotations of your custom embroidery patches!

Custom Fabric Keychains

Compared to metal key chains, the fabric key chains are lighter, cheaper and softer. Donghong Craft also offer custom service for all kinds of 2D or 3D fabric key chains. We are flexible on the fabric materials like twill, felt, velvet, cotton, denim fabrics. For the logos and patterns, we can do embroidery, woven or printing according to your requirements. There is no MOQ limited for the custom designs and we would make the most suitable suggestion for you.

Welcome to contact us by mail order@dhmedal.com or call us +86 -769-2290-0190 ext 218 for more information or free quotations for your custom fabric key chains!