Tungsten Copper Alloy Applications

Tungsten copper alloy applications are to fabricate engines and electrical devices. It is also used in the fields of aviation and spaceflight. Electrodes, refractory parts, heat sinks, rocket parts and electrical contacts are all can be made by copper tungsten alloys.

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What's Tungsten Copper Alloy?

Tungsten copper alloy (copper tungsten alloy, CuW, or WCu) is a pseudo-alloy of copper and tungsten. As copper and tungsten are not mutually soluble, the material is composed of distinct particles of one metal dispersed in a matrix of the other one. The alloy combines the properties of both metals, resulting in a material that is heat-resistant, ablation-resistant, high thermal and electrical conductivity, and easy to be machined. Parts are made from the WCu alloy by pressing the tungsten particles into a desired shape, sintering the compacted part, then infiltrating with molten copper.

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Customized Tungsten Copper Part Price on July 2, 2019

Customized tungsten copper part price is 6.30USD/PC on July 2, 2019, EXW, Xiamen, China.

The customized part would be easier to be processed to different shapes when the content is 70~80W. Others can also be customized, but the processing cost is higher.

If you have any inquiry of tungsten copper, please feel free to contact us:

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Tungsten Copper Brick

Tungsten Copper Heat Base Picture

Tungsten copper brick is a pseudo alloy of copper and tungsten. As copper and tungsten are not mutually soluble, the tungsten copper alloy brick material is composed of distinct particles of one metal dispersed in a matrix of the other one. The microstructure of tungsten copper brick is therefore rather a metal matrix composite than a true alloy.

Tungsten copper brick combines the properties of both metals, resulting in a material that is heat-resistant, ablation-resistant, highly thermally and electrically conductive, and easy to machine.Tungsten copper brick offered by us is high quality.

Parts are made from the Cu-W alloy by pressing the tungsten particles into a desired shape, sintering the compacted part, and then infiltrating with molten copper. Sheets, rods and bars of the alloy are available as well.

Chinatungsten Online provides tungsten copper alloy brick composites to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices. With the thermal advantages of tungsten copper brick with the very low expansion characteristics of tungsten, tungsten copper brick has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make tungsten copper brick an excellent choice even for extremely dense circuits. Tungsten copper brick can be widely used in many fields, we can provide different sizes of tungsten copper brick according to your requirements.

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Tungsten Copper Heat Base

Tungsten Copper Heat Base Picture

Chinatungsten's tungsten copper heat base is to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices and also used in radio frequency, microwave, high power diode packaging and optical communication system.

With the thermal advantages of copper with the very low expansion characteristics of tungsten, tungsten copper has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make tungsten copper alloy an excellent choice even for extremely dense circuits.

The CuW75 tungsten copper alloy is used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-power electronic devices. As a tungsten copper material, it's a composite, so both the thermal advantages of copper and the very low expansion characteristics of tungsten can be utilized.

Copper Tungsten is one of the most popular refractory metal based heat base materials offered today. At China Tungsten we can offer all kinds of tungsten copper heat base as the customer's requirements.

Tungsten copper heat base also called tungsten copper heat sink. Tungsten copper heat base is a heat base which is made of tungsten copper alloy. A heat base is a term for a component or assembly that transfers heat generated within a solid material to a fluid medium, such as air or a liquid. Examples of heat bases are the heat exchangers used in refrigeration and air conditioning systems and the radiator (also a heat exchanger) in a car. Heat bases also help to cool electronic and optoelectronic devices, such as higher-power lasers and light emitting diodes (LEDs).

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Tungsten Copper Combination Electrode

Tungsten Copper Combination Electrode Picture

Tungsten copper combination electrode with high temperature resistance, arc ablation, high hardness, high melting point, high strength, high specific gravity, high conductivity, high thermal conductivity, easy cutting, anti-adhesion, and has a transpiration cooling characteristics. Using isocratic pressing - high-temperature sintered tungsten skeleton - copper infiltration process, the production of copper content 6-90% of various large, shaped pieces, high purity, uniform organization performance; compression molding, extrusion molding, injection molding can produce all kinds of sheets, rods, tubes, plates, and shape of the various models of complex products.

Tungsten copper combines with iron to the composite electrode, to eliminate the pores, cracks problem exists in the past, this process uses a welded composite. Tungsten, copper and iron composite electrode composite made of for both tungsten copper, iron materials, combined with high strength, good electrical conductivity.

1. A reasonable mix of tungsten copper, iron, and its mechanical properties is more reasonable, more convenient to use. The small precision electrode machining deformation problem is a good solution;

2.The electrode is directly adsorbed on the the magnetic work bench grinding after processing, flatness, surface finish and dimensional precision are other processing methods are not comparable. Exudes a sense of superiority in the processing of large planar electrode;

3. The electrode after grinding benchmark reproduction is good, especially suitable for the electrode need a multi-step combinations work;

4. A plurality of electrodes can be processed at the same time, can greatly improve the work efficiency;

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Tungsten Copper Powder Metallurgy

Tungsten Copper Electrode Picture

Tungsten copper powder metallurgy method is the choice of preparing fine tungsten, copper powder, soaked by the sintering process is refined class, can withstand high temperatures and nearly 2,000 high stress, with high melting point, high hardness, resistance to burning and good anti-adhesion resistance, electrical corrosion product surface finish, high precision, low loss. Preparation of alloy powder metallurgy method has good electrical and thermal conductivity, good high temperature strength and certain plasticity.

Powder metallurgy involves producing metallic powders and preparing a mixture from them with a given chemical composition and specific processing properties; molding powders or mixtures made with them into semi finished products of a given shape and size, chiefly by pressing; and sintering, or heating the semi finished products at a temperature below the melting point of the metal as a whole or of its principal component.

As the melting point of tungsten and copper vary greatly, tungsten melting point of 3410 ℃, much higher than the boiling point of copper and tungsten copper immiscible, so the tungsten-copper composite material prepared by powder metallurgy products out performance is much higher than the legal system prepared copper infiltration products. Further, the powder metallurgy method can improve the material's density.

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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.

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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.

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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.

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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.

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Tungsten Copper Spot Welding Needle

Tungsten copper spot welding needle has many advantages, such as small in volume, excellent electrical and thermal conductivity, high welding stability, good anti-adhesion and no bombing fire, etc., in the micro-battery spot welding field has broad application prospects.

Types

Tungsten Copper Spot Welding Needle Picture

According to the differences of the shapes and structures, tungsten copper spot welding needle can be specifically divided into single head center solder pins, solder pins single eccentric head, double-headed center solder pin, eccentric stud welding spot welding needle, insert needle and so on. Common micro spot welding batteries includes laptop battery, cell phone battery, walkie-talkie battery, difital camera battery, button battery, lithium battery, nickel hydride nikel-cadmium battery, etc., the specific selection should be considered with the structure and the properties of the products.

Notice

1. Before spot welding, it should be ensured that the welding needle and the surface welded at the same level;

2. Before spot welding, it should be checked if the welding needle has been oxided of burned and use sandpaper or a sanding belt to smooth surface until the surface is smooth and no oxides;

3. The same spot welding joints can not be welded twice, and to ensure that the positive and negative electrodes have four effective solder joints;

4. There is no bombing fire and over-burnt phenomenon.

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Tungsten Copper Spot Welding Electrode

Tungsten copper spot welding electrode plays an important role in ensuring the quality of spot welding, which includes conductivity, transfer the pressure and rapidly scatter the heat in the welding area.

Advantages

1. High machining accuracy, the small area of the welding sharp;

2. Low voltage required, high-performance welding and good welding stability;

3. High torsional strength can effectively ensure the quality and precision of processing;

4. Small welding seam, good consistency and not easily to be pseudo soldered.

Process

Tungsten Copper Spot Welding Electrode Picture

1. Special conditions for improving the contacted resistance and heat dissipation, capacitor discharge welder using large current and short energizing time can be relatively large weld the workpiece large in thickness;

2. Use electrode with different diameter and the small one used in the thin plate or the one with good performance in electrical and thermal conductivity in order to increase the current density and reduce the effect of electrode heat dissipation this side;

3. Use different electrode materials or conductive sheets, one side of the workpiece with good thermal conductivity is poor heat conductivity of copper alloy, to reduce heat loss that side;

4. Use gasket (poor performance in thermal conductivity, thickness is between 0.2-0.3mm) to reduce the heat on this side.

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Tungsten Copper Vacuum Contacts

Tungsten Copper Vacuum Contacts Picture

Tungsten copper vacuum contacts are used in the vacuum arc-quenching chambers (VACs) of highly dependable, quick-acting vacuum circuit breakers capable of breaking large currents in high-voltage 6-35 kW electrical networks. Tungsten copper vacuum contact is a key element in commutation switches (circuit breakers). Currently, the most common material used in contact pairs in VACs are W-(50-90%)Cu composites.

Tungsten copper vacuum contacts are subjected to the effects of short-circuits currents and fusing metals in various points of the surface due to the high density of the current in them; as a result, welding joints form in these zones. This problem was one reason that delayed the development of vacuum commutation technology for more than twenty years. The resistance of a VAC's contacts to welding is one of its key characteristics. The problem of welding was solved by developing special contact plates made from tungsten copper composites, which provided a high breaking capacity for circuit breakers in commutation networks, wear-resistance and resistance of contact pairs to welding.

Tungsten copper vacuum contacts are used in VACs of vacuum contactors with a nominal voltage of 1.14 kW and higher in systems for remote control of electric drivers. Tungsten copper vacuum contacts are a long-lasting means of switching contactors in electric circuits on and off and ensure a low cut-off current in the system.

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Tungsten Copper Laser Heat Sink

Tungsten Copper Heat Sink Picture

Tungsten copper laser heat sink is an integrated circuit chip having a certain function is placed in a container with suitable housing, the chip to provide a stable working environment, protect the chip from less affected by the external environment, so that an integrated circuit having a stable normal function. At the same time the heat sink is chip-chip output, input connecting means outwardly transition, together with the chip to form a complete whole. The heat sink sheet material is required to have a certain degree of mechanical strength, good electrical properties, thermal properties and chemical stability, and according to different categories of integrated circuits and the use of premises, the choice of different package structures and materials.

Tungsten copper laser heat sink combines the advantages of tungsten and copper, both having low expansion characteristics of tungsten, but also has high thermal conductivity properties of copper, its thermal expansion coefficient and thermal conductivity can be varied by adjusting the tungsten copper component, while and coefficient of thermal expansion of silicon, gallium arsenide, and ceramic material matches.

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Tungsten Copper Combination Electrode

Tungsten Copper Combination Electrode Picture

Tungsten copper combination electrode has a combination of tungsten and copper, high temperature resistance, arc ablation, high hardness, high melting point, high strength, high specific gravity, high conductivity, high thermal conductivity, easy cutting, anti-adhesion, and has a transpiration cooling characteristics. Using isocratic pressing - high-temperature sintered tungsten skeleton - copper infiltration process, the production of copper content 6-90% of various large, shaped pieces, high purity, uniform organization performance; compression molding, extrusion molding, injection molding can produce all kinds of sheets, rods, tubes, plates, and shape of the various models of complex products.

Tungsten copper combines with iron to the composite electrode, to eliminate the pores, cracks problem exists in the past, this process uses a welded composite. Tungsten, copper and iron composite electrode composite made of for both tungsten copper, iron materials, combined with high strength, good electrical conductivity.

1. A reasonable mix of tungsten copper, iron, and its mechanical properties is more reasonable, more convenient to use. The small precision electrode machining deformation problem is a good solution;

2.The electrode is directly adsorbed on the the magnetic work bench grinding after processing, flatness, surface finish and dimensional precision are other processing methods are not comparable. Exudes a sense of superiority in the processing of large planar electrode;

3. The electrode after grinding benchmark reproduction is good, especially suitable for the electrode need a multi-step combinations work;

4. A plurality of electrodes can be processed at the same time, can greatly improve the work efficiency;

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Tungsten Copper EDM Rod

Tungsten copper EDM rod has excellent thermal and electrical conductivity, arc erosion resistance and high material removal rate. Especially for tungsten carbide, high-temperature hard alloy mold manufacturing has remarkable performance.
Characteristic

Tungsten copper materials used for electrode accounts for a quarter of total

consumption of tungsten copper, so it not only required high conductivity, material removal rate, low electrode consumption, easy for processing, but also has

Tungsten Copper EDM Rod Picture

requirements as follow:
1. Based on high thermal and electrical conductivity, it also obtains better performance in arc erosion resistance;
2. It is difficult to meet the requirements of the contact by normal process, tungsten copper electrode should has uniformity and high density;
3. It is the most out standing problem that the mold or other products with diverse shape or structure needs different kinds of tungsten copper electrode, but the quantity demanded is relatively low.

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Tungsten Copper Combination Contact

Tungsten copper combination contact, as the name suggests it is combined by tungsten copper with other material. As usual, the shank of contact is iron, and the end of contact is tungsten copper. Contract with general tungsten copper contacts, the advantage of combination contact is the lower costs. But it is very suitable for which some of industry only required high quality in the end of contact, the combination contact could save much costs but also with high properties.

Features

Tungsten Copper Combination Contact Picture

Tungsten copper is choose tungsten as a skeleton, and filled in a copper composite material composition within the pores of the skeleton, skeleton guarantee its high melting point of contact compressive strength, resistance to arc erosion, not only to improve the conductivity of copper, thermal conductivity and improved processing performance, and when the high temperature arc evaporation can absorb a lot of heat from the arc, improve conditions and reduce galvanic action.

Tungsten copper alloy electrician its high density, high thermal conductivity, high strength and hardness, low resistivity, low thermal expansion coefficient, and the resistance to arc burning resistance, welding resistance, electric corrosion resistance and other properties and in electrical contact material advantages of the electrode material is applied on the other material in the short term can not replace.

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Tungsten Copper Handle Electrode

Tungsten copper handle electrode also called tungsten copper composite electrode, one side is tungsten copper, and another side is high tensile steel. Tungsten copper handle electrode uses a unique technology to produce vacuum diffusion welding, surface welding seamless, the overall effect is good, mainly used in EDM electrodes increases efficiency.

Advantages

One benefits of tungsten copper handle electrode is conducive to a magnetic iron

Tungsten Copper Handle Electrode Picture

fixed on a magnetic base so that the processing time to ensure accuracy. Tungsten copper composite electrode is combined with iron, to prevent the use of conventional welding processes this compound in the presence of pores, cracks problem.
1, Tungsten copper combines with iron, which mechanical properties make it more reasonable and easier to use. Small precision machining electrode deformation problem is a good solution;
2, The electrode can be directly adsorbed on magnetic bench grinding its flatness after processing, surface finish and dimensional accuracy than other processing methods can not reach. Utmost superiority in processing large plane electrodes;
3, The reference electrode after grinding reproducibility is good, especially for multi-step combinations need workers electrode;
4, a plurality of electrodes can be processed simultaneously, can greatly improve work efficiency;
5, The loss of the electrode by grinding can be reused, usage rate, a substantial increase in work efficiency and reduce processing costs.
6, A magnetic iron conducive fixed on the magnetic base so that the processing time to ensure accuracy.

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Tungsten Copper Nut Electrode

Tungsten copper nut electrode welds bolt and nut together and achieves higher embossing hardness and higher welding strength, which has been widely used in machinery automation and aerospace fields.

Advantages

1. Tungsten copper has high hardness, high strength and excellent performance in electrical and thermal conductivity;

2. Using one-step forming process, no holes in welding seam and has high precision and concentricity;

3. High torsional strength can effectively ensure the quality and precision of processing;

4. Flexible enough for a range of products, can meet the mass-production and has longer service life.

Application

Combined with tungsten copper and chromium zirconium copper seamlessly. On the one hand, the tip uses tungsten copper with highhardness, wear resistance and excellent electrical and thermal conductivity; on the other hand, electrode base is made of chromium zirconium copper with high temperature strength, good oxidation resistance. With the automatic bump welding equipment, it has a broad application prospect in automotive and aerospace fields.

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