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2019年1月24日星期四

Tungsten Copper Rivet Electrical Contact

Tungsten copper rivet electrical contact is an ideal for low volume applications, double-headed contacts and small diameter contacts that cannot be economically made as composites. Rivet electrical contact is a part with a head larger than its body or shank. It is designed to be clinched onto another part of an assembly.

Tungsten Copper Rivet Electrical Contact Picture
Chinatungten Online is one of the world's leading suppliers of tungsten copper rivet electrical contact and contact assemblies. We have electrical contact manufacturing solutions for every application, producing composite rivets, solid rivets, laminated welding buttons, powder metal contacts, and other designs to meet all electrical contact requirements. Electrical contact materials include pure tungsten, tungsten copper, tungsten silver and other precious metals. Our contacts are used in a broad range of power applications, from millivolts to kilovolts.

Over the years, we have continually enhanced our expertise, production efficiency and global footprint to ensure we're the electrical contacts supplier of choice to companies in every market. Our manufacturing systems produce superior contacts that perform reliably in demanding electrical switching, control and connector applications. Chinatungten Online is so committed to providing the best value to our customers that when we weren't satisfied with the output of our production equipment, we designed our own.

We appreciate the opportunity to work with you regarding the tungsten copper rivet electrical contact requirements for your specific application. Size, material, attachment, and even the mechanics of the finished electrical switch or device are all important factors in the design. We also regularly work with customers to analyze contact composition and assembly to identify the root cause of contact failures.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us:
Tel.: +86 592 512 9696 ; +86 592 512 9595
Fax.: +86 592 512 9797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Tungsten Copper Button Contact

Tungsten copper button contact is main parts for high-voltage circuit breakers, switchgear, disconnections and grounding switch. In the high-pressure, high pressure SF6 circuit breaker system, the arc contact currently used to CuW based alloy, moving past the arc contact arcing contacts are finger - spring structure, which complicated the work of the spring heat, its reliability is deteriorated.
Tungsten Copper Button Contact Picture

Tungsten copper button contact in appliances bear making, carrying and breaking normal current and fault current function, it requires low contact resistance and reliability, long life and so on. Since the electrical conditions vary greatly, therefore, on the contact material presented diverse performance requirements. But for a variety of performance requirements, none of the contact material can be fully satisfied, it must be selected according to the different characteristics of various materials.

With the rapid development of modern industry, industrial electrical control, increasing the level of intelligence, increasing high voltage transmission network load, low-voltage power distribution and control systems as well as the continuous development of the electronics industry update replacement products. Electrical products to large capacity, small size and direction, along with electrical products for heart device - electrical contact material put forward higher demands to the material under tremendous heat and arcing Joule heat, the melting does not occur good welding, mechanical wear and abrasion resistance, electrical properties; metal produced in the process of breaking splashes should not be excessive, arcing time not too long; in the current environment, good welding resistance, low and stable contact resistance.

Around the national key pillar industry in the future will develop multi-family, high-performance electrical alloy products. Electrical contact materials will be increasingly automated production lines, further to the element of direction, the development of advanced, practical and efficient special tooling equipment, improve reliability, stability, corrosion resistance and other properties of the product.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us:
Tel.: +86 592 512 9696 ; +86 592 512 9595
Fax.: +86 592 512 9797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

2019年1月17日星期四

Tungsten Copper Heat Sink

Chinatungsten offers special high conductivity and low thermal expansion metals and ceramic materials. All materials are available as finished components and in sheet form. Metals are available either as composites or as laminated sheets.

Tungsten Copper Heat Sink Picture
Tungsten copper heat sink have very high in plane conductivity provide by layers  of copper andtungsten copper heat sink picture low thermal expansion provided by the inner layer  of molybdenum. These laminated sheets have the ability to spread the heat from a concentrated heat  source and then dissipate the heat through the layers.

Tungsten copper heat sink is made by infiltrating, under vacuum, uniform controlled porous blocks of tungsten with molten cotungsten copper heat sink picturepper. This results in a material with an interconnected copper matrix that has high thermal conductivity in all axis, low thermal expansion, and good electrical conductivity, Copper content can range between 10% and 25%.

Tungsten copper heat sink is made by sintering molybdenum and copper together. This results in a tungsten copper heat sink of lower density, low CTE and excellent thermal conductivity.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us:
Tel.: +86 592 512 9696 ; +86 592 512 9595
Fax.: +86 592 512 9797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Tungsten Copper Slab

Tungsten Carbide Slab Picture
Tungsten copper slab with the properties of tungsten’s high strength, high stiffness, low thermal expansion coefficient and copper’s high plasticity, good electrical and thermal conductivity and other properties. In large scale integrated circuits and high-power microwave devices, tungsten copper alloy material as the substrate, the slug, connectors and cooling components have developed rapidly. However, tungsten copper alloy sheet when used as electronic packaging materials, the density must be greater than 98% theoretical density, in order to ensure a high thermal conductivity, thus increasing the density of tungsten copper alloy tungsten copper alloy sheet is the key to performance guarantees.

Major existing technology tungsten copper slab processing includes the following:
(1) Hot forging + cold forging processing method; the method by forging machinery to exert pressure on tungsten-copper alloy billets, processing temperature higher than the recrystallization temperature of copper to produce plastic deformation in order to obtain a high-density alloy material, and then follow the product requirements again after forging at room temperature to give the desired material specifications.
(2) Hot + complex pressure finishing treatment method; this method is applied simultaneously sintered tungsten-copper alloy unidirectional pressure to give higher relative density of the alloy, then in order to achieve the desired size, and then the sintered alloy material is re-pressed.
(3) Multi-pressure hot-rolled + finishing treatment method; the method by recrystallization temperature higher than copper, to increase the density of the sintered alloy of tungsten copper alloy rolled on the hot strip mill, then according to the required size of the tungsten copper alloy re-pressed.

However, a closer analysis shows that the above processing method, the processing method of the prior tungsten copper alloys are a series of problems, first of all the issues involved is the production cycle is too long, generally two to three production processes to produce a thickness of less than 1mm tungsten copper alloy sheet, for example, at least in its production cycle over two to five days; the second is high energy consumption: hot forging, hot rolling, annealing and other processes required high-power high-temperature furnace, high energy consumption; and now art methods of low yield, at high temperatures can easily cracking scrap processing, production of tungsten copper alloy sheet thickness of 1mm for example, the integrated rate of about 50% finished; in addition, the prior art methods use large equipment investment the type and quantity more, and most of high power and large-tonnage processing equipment, requires larger processing site.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us:
Tel.: +86 592 512 9696 ; +86 592 512 9595
Fax.: +86 592 512 9797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.