Tungsten Copper EFP Liner Preparation

Tungsten copper blank forging process, the deformation of the matrix material, there are two ways. The first one is just a copper substrate deformation, deformation of tungsten particles does not occur, and the tungsten particles flow along the deformation direction of the base, and finally was streamlined distribution in the matrix. The second way is the copper substrate and the tungsten particles are deformed, copper and tungsten were tested after deformation fibrous. After forging the blank is then annealed microstructure was observed annealing temperature of 500 ° C, time 2 h. below is 30W-Cu EFP liners blank after forging through 500 ° C, 2 h annealing microstructure.

As can be seen from the figure, the copper matrix recrystallization occurs, to form a uniform fine grain structure, tungsten particles are substantially not occur grow and segregation. Fibrous tungsten and not deformed in the forging, heat treatment because of the lower temperature, and recrystallization temperature of tungsten is much higher than the annealing temperature, if the tungsten particles are deformed, then annealed at this temperature after the tungsten particles will remain deformed when organization, which is inconsistent with the experimental observation. Therefore, the deformation mode of tungsten copper blanks belongs to the first mode, metallographic not observed streamline the distribution of the tungsten particles is in the process of forging the metal in the longitudinal and circumferential directions have taken place in the flow of sake.

Tungsten Copper EFP Liner

Tungsten copper EFP liner having a higher density and strength, mainly used in the current foreign Shaped drug type cast. Studies have shown that three high-caliber bomb under conditions comparable depth of its armor Cu Liner material increased by about 30%. Therefore, W-Cu composite explosive forming Liner munitions will also have great potential.

Scientists have studied the preparation and formability 30W-Cu EFP liners of. Ordinary tungsten powder, copper powder and ultrafine preparing two tungsten-copper composite powders of different bars, and then test the performance forged bars, final selection of material for producing a forged good performance EFP liners. Studies have shown that: the ordinary tungsten powder, copper powder prepared material has good pressure processing performance; prepared density 30W-Cu EFP liners materials 98.2% of theoretical density, tensile strength after annealing material reaches 315 MPa, elongation rate was 15.3%.

By experiment under the same sintering conditions, ultrafine tungsten-copper composite powders prepared density material is superior to the use of the material prepared in the ordinary powder, but the material of ordinary powder preparation has better pressure processing performance.

It can significantly increase the density of tungsten-copper sintered materials by forging, annealing after forging 30W-Cu EFP Liner material density up to 98.2% of the theoretical density. After the heat treatment the tensile strength of the material reaches 315 MPa, elongation rate was 15.3%. 

Tungsten Copper Linner

Tungsten copper linner combination of high density and ductility of tungsten copper, compared to copper liners have higher power and armor shaped effect. The disadvantage is that tungsten and copper can not dissolve each other, and because of the density difference between the two large, easy to form when gravity segregation caused by compression molding liners inhomogeneous density distribution.

Tungsten copper alloy as an ideal material for liners, but there is more in the preparation process issue, tungsten copper alloy bonding strength is poor, molding material difficulties; its wear deep fried sensitive to high variability, it should only lower Fried use under high conditions.

You can improve the disadvantage of tungsten copper linner by the following:

1, a conventional tungsten copper alloy density difference obtained by the method, the uneven density distribution, a more effective method for mixing powder or the preparation of molding can be used, including isostatic pressing and the like.
2, changing the sintering temperature and obtain better bonding strength.
3, on the layered liners do question whether it will result in poor stability problems.
4, if the density and bond strength can be improved, and then use the company's strengths, the material is rolled into sheets, tungsten copper alloy Liner material prepared by spinning, stamping or forging methods.

90W10Cu Tungsten Copper Sheet

90W10Cu tungsten copper sheet mainly used to suppress the high-speed technology to prepare, and then in 1400 ℃ high temperature hydrogen furnace infiltrated get 90W-10Cu composite. Research repression affect the quality of the pyrometer compacts green density and microstructure of. The results of surface, with the suppression of the temperature rise, the compact density, high-speed suppression obtained at 950 ℃ relative density greater than 80.65% of W skeleton dense tungsten particles connection, distribution, pore connectivity is good. Compacts increases quality, due to the applied energy density is reduced, leading to the green density decreases. By twice the height of repression, the green density further increase; the relative density of 99.5% 90W10Cu materials, thermal conductivity 175W / (mK), tungsten copper alloy 90W10Cu indicators have reached the requirements of the appropriate heat sink material.

90W10Cu Tungsten Copper Sheet Properties Conclusion

1, At 950 ℃ high speed pressing attainable relative density greater than 80.65% of W skeleton, by infiltration get 90W10Cu composites.

2, At room temperature, 600 ℃, 950 ℃ for high-speed tungsten preform pressing, pressing as the temperature rises, the green density increases.

3, High velocity compaction,  powder mass increases, due to the ability of additional density decreases, resulting green density decreases. With the increase in the number of high-speed pressing, green density is improved.

4, Using high-speed pressing technology combined with infiltration of 90W-10Cu preparation material and the thermal expansion coefficient and other indicators have reached the requirements of the appropriate heat sink material.

What is Tungsten Copper Block

Our tungsten copper block looks like a gold block, it is so beautiful. And the longest length and width we are able to provide is 500mm, and the most thickness is 8mm. We are able to provide the composition with 93W, this material always used on the military industry. The properties of these material is also higher than common materials, so if you have any special required on the properties, you could do not hesitate to contact us.

The following is the block we have finished for your reference:

If you have any other special required on the size or properties, you could contact us by sales@chinatungsten.com, and we could reply you as soon as possible.

Sincerely hope could cooperate with you in the near feature.

How to Make Tungsten Copper

The method of tungsten copper machining is mainly divided into two categories: infiltration and direct sintering method. In recent years, due to the rapid development of nanotechnology, directly obtained by sintering a great development.The melting point of tungsten, copper vary greatly higher than the boiling point of the copper melting point of tungsten and tungsten copper immiscible, the general method of smelting is difficult to produce tungsten copper alloy, the only powder metallurgy to make tungsten copper composites manufacturing to become a reality.

Tungsten copper machining include the following methods:

Infiltration Method

High Temperature Sintered Tungsten Copper Alloy

Mixed Powder Sintered Copper Infiltration Method

Direct Sintering Method

Our general method is infiltration, the infiltrated divided into high temperature sintered tungsten skeleton copper infiltration and low-temperature sintering mixed powder copper infiltration two.

The following is the picture about our tungsten copper maching method:

Tungsten Copper Material MSDS

Material Safety Data Sheet (MSDS) is a table about data regarding the properties of a particular substance, which may concern instructions for the safe use and potential hazards associated with a particular material or product. Therefore, MSDS is important and necessary for chemicals users.

Of course, the tungsten copper we provided also have MSDS, and more about tungsten copper’s MSDS please feel free to visit: http://www.tungsten-copper.com/MSDS-of-tungsten-copper.pdf

At the same time, following is the picture about our tungsten copper products, which are suitable for the MSDS:

The sheet aims to offer workers and emergency personnel with procedures for handling or working in a safe way, and includes information such as physical data (melting point, boiling point, flash point, hardness, ultimate tensile strength, density, etc.), toxicity, health effects, first aid, reactivity, storage, disposal, protective equipment, and spill handling procedures. The exact format for MSDS can vary from countries to countries by respective national requirement.

Tungsten Copper EDM Electrode

Tungsten copper EDM electrode is a powder metal product designed to combine the best EDM properties of tungsten and copper. Tungsten copper combines the high electrical conductivity of copper with the high melting point of tungsten. The combination of these two metals creates an electrode material with very good wear properties.

The manufacturing of Copper Tungsten Electrodes is telling about a combination of two metals: copper and tungsten. So this is a product is caring the properties of both the metals. Copper tungsten rod is highly heat resistant and conductive. 10 – 50% copper is incorporated according to the demand of usability.

Features of Copper Tungsten EDM Electrodes:

Thermal and electrical conductivity up to a high limit

Available in both finished and semi finished shape

Our product range also comprises of tungsten copper bar, tungsten copper blocks and other tungsten copper products. And if you have any other inquiries about our products, please do not hesitate to contact us with: sales@chinatungsten.com

Tungsten Copper Electrical Contacts

Tungsten copper electrical contacts have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the Tungsten Copper with a high copper content may give the lowest erosion. As arcing severity increases, the Tungsten Copper with the higher refractory content withstand arc erosion better. Tungsten Coppers are also used as arcing edges of selector switchblades in transformer tap changers.

The high Electrical & thermal conductivity of copper are combined with the arc-resistant & no-welding properties of Tungsten or their carbides to form an extensive series of compositions each designed to give the best performance for your particular application. 

Tungsten copper electrical contacts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only Tungsten Copper materials will stand these high temperature & aberration.

Tungsten Copper Iron Composite

Tungsten copper iron composite electrode also called tungsten copper petiole electrode. One end of the material is tungsten copper alloy, the other end is a relatively high tensile strength steel.

Tungsten copper with iron composite is developed in response to customer requirements, a new process technology, using a complex method of manufacturing the pressure. Combined with the end face of tungsten, copper and iron close no holes, the overall low contact resistance, and high tensile strength.

Tungsten copper composite electrode material is copper, steel two materials by explosive welding composite, combined with high strength, good electrical conductivity, direct sawing, milling and grinding. In the discharge machining precision parts IC, which is a good overall performance copper electrode can not be replaced, to improve the processing accuracy of parts and reduce overall costs is the most important feature of this material. This material has been widely used in foreign countries, our company can be customized with different ways of complex products according to customer requirements.                 

Tungsten Copper Rod Description

Tungsten copper rod is a kind of round rod. The grade of tungsten copper rod include WD10070、WD10075 and WD10080. the choice of tungsten copper content are depend of the application of tungsten copper rod, but if you do not know the detail application of the material, you can choice the content according to GB/T8320-2003.

Tungsten copper rod is a kind of composite material, which is manufactured by high-purity tungsten powder and high conductivity copper powder with the production process of isostatic pressing, sintering temperature and copper infiltrated.

Tungsten copper rod properties include breaking arc performance, good thermal conductivity, low thermal expansion, in high temperature will not soften, high strength, high density and high hardnes.

Tungsten copper rods are mainly used in resistance welding electrodes, EDM electrodes, high-voltage discharge electrodes and electronic packaging materials.

Tungsten Copper Spring Contacts

Tungsten copper spring contacts is suitable for using the circuit up to the rated voltage 660V AC 50HZ or 60HZ, rated current up to 95A, for making, breaking, frequently starting and controlling the AC motor. Combined with the auxiliary contact block, timer delay and machine interlocking device etc. it becomes the delay contactor, mechanical interlocking contactor, star-delta starter. It is combined into the electromagnetic starter.

On account of their excellent properties, tungsten copper spring contacts materials have found a wide field of applications. Tungsten copper spring contactss are used successfully with high tungsten content as burn-off contacts for large low-voltage circuit breakers and with lower contents as contacts carrying a steady line current for molded case circuit breakers and in various protective circuit breakers. These tungsten copper spring contactss are also used in high current contactors where resistance to contact welding and arc erosion are required. 

The copper and tungsten composite group combines the high thermal and electrical conductivity of copper with the high erosion resistance of the high melting tungsten. These materials are also characterized by their high strength and their resistance to welding or sticking. They are principally made by infiltration and the nominal copper content varies from 10-50%. By increasing the amount of tungsten, the hardness and welding is reduced. This composite group of alloys is specially preferred for use in air.

What is Beryllium Copper Alloy

Beryllium copper alloy is composited by the beryllium and copper, the main material is beryllium. It is the best performance copper alloys advanced flexible material, has high strength, elasticity, hardness, fatigue strength, elastic hysteresis, corrosion, wear, cold, highly conductive, non-magnetic, shock does not produce sparks a series of excellent physical, chemical and mechanical properties.

Beryllium copper alloy is a supersaturated solid solution copper alloys, non-ferrous alloy mechanical properties, physical properties, chemical properties and good corrosion resistance combined, after solution and aging treatment, with special steel with very high ultimate strength, elasticity limit, yield strength and fatigue limit, but also have a high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, widely used in manufacturing various types of mold inserts, replace steel production high precision, complex shape of the mold, welding electrode materials, die-casting machines, injection molding machine punch, wear and corrosion work. Beryllium copper alloy used in micro-motor brush, cell phones, batteries, products, is indispensable to the national economy an important industrial material.

What is Tungsten Copper Bar

Tungsten copper bar is a kind of tungsten copper rod, the special properties of tungsten copper bar is it's squre, and it is include.

Tungsten copper bar is combined by tungsten and copper, which includes the properties of tungsten and copper, are widely used on EDM and heat sink. The smallest thickness we are able to provide is 0.1mm, and we are also able to provide the special requried for each client.

All tungsten copper bars we provided are seriously obeyed international GB/T8320 producing. Our tungsten copper bars are high density and high conductivity and high hardness. Also, it is the first choice material of mirror spark discharge electrode.

The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.

The composition of tungsten copper bar we are able to provide is from 10Cu to 50Cu, or if you have any special requried of the composition, you can contact us without delay. Our technical department could research per client's per special requried.

What Is Tungsten Copper Plate

Tungsten copper plate is a composite of tungsten and copper. The coefficient of thermal expansion of the composite can be designed by controlling the content of tungsten, matching that of the materials, such as Ceramics, Semiconductors, Metals, etc. The products are widely application in the fields such as radio frequency, microwave, high power diode packaging and optical communication system.

Tungsten Copper Plate Features
1. The composition of tungsten and copper are well-proportioned and accurate percentage;
2. Tungsten copper plates are precisely machined with high thermo stability, high arc resistance and high strength;
3. Tungsten copper plate has high electrical conductivity and thermal conductivity;
4. It owns both excellent properties of tungsten's low expansion and copper's high heat conductivity;
5. Tungsten copper plates comply with China GH 8320-87 and SJ-20848-2002UQB standard.

The longest length we are able to provide of tungsten copper plate is 500mm, and the most thickness is 0.2mm. And we also provide the special sizes according to per client's per special requried.

What Is Tungsten Copepr Rod

Tungsten copepr rod is a kind of round rod. Tungsten copper rod is a combination of tungsten and copper.
The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.

We can provide tungsten copper rod with the diameter≥0.9mm and length≤300mm, and then the tungsten content of 55%~90%. But all can be produced as the requirements of customers, and you canuse our tungsten copper rods machining to your tagart dimension.

Tungsten copper rods are mainly used in resistance welding electrodes, EDM electrodes, high-voltage discharge electrodes and electronic packaging materials.

Tungsten Copper Sheet

Tungsten copper sheet is a kind of tungsten copper plate, the special properties of tungsten copper sheet is it's thickness, which is only 0.1mm~1mm.

Tungsten copper sheet is combined by tungsten and copper, which includes the properties of tungsten and copper, are widely used on EDM and heat sink. The smallest thickness we are able to provide is 0.1mm, and we are also able to provide the special requried for each client.

All tungsten copper sheets we provided are seriously obeyed international GB/T8320 producing. Our tungsten copper sheets are high density and high conductivity and high hardness. Also, it is the first choice material of mirror spark discharge electrode.

The composition of tungsten copper sheet we are able to provide is from 10Cu to 50Cu, or if you have any special requried of the composition, you can contact us without delay. Our technical department could research per client's per special requried.

Gel Prepared Tungsten Copper Alloy Powder

In this paper, the sol-gel method combined with a spray-drying method series of ultra-fine tungsten copper composite powder, the powder through the different composition, size and other performance standards, different green powder sintering behavior under liquid phase conditions research and analysis by testing the sintered microstructure and physical and mechanical, thermal, electrical properties, the influence of the preparation method and process conditions on the powder properties and the final W-Cu composite material properties, so as to prepare a high density of W-Cu composites were useful to explore and try.

By powder on microstructure and properties of comparative analysis, we found the following preparation process using tungsten-copper composite powder series ideal performance: After paratungstic acid and copper nitrate according to a certain percentage of a beaker with a good, adding a certain amount of citric acid After stirring at room temperature at 30 ℃ dissolve, then add a certain amount of stearic acid as a surfactant, was heated to 80 ℃ stirring, when it becomes a gel by spray drying tower and dried: and then calcined at 600 ℃ 4 hours ; then reduced at 800 ℃. The powder series have in common is: particle size were between 0.1um-1um: powder particle shape is more structured, are spherical shape; powder due to the small particle size, surface activity, leading to more serious powder agglomeration.

Tungsten Copper Wear Resistance

Tungsten copper wear resistance nano-powder materials were milled, depending on the ratio of copper powder mixed 2_4h, first at the bottom of the prepared graphite mold Xianpu ー about O. 5_ thick layer of pure nano-tungsten-copper resistant materials and then mixed in different proportions holes and pure copper powder powder, copper content increased, the thickness of about I. 5mm, the surface layer of about O. 5mm holes and ー thick pure copper powder. The die set installed hot powder sintering furnace, sintering Eito Arts Figure I shows. The sintering resistant materials combined with copper to form functionally graded materials clean copper surface, the wind ro casting process is placed in Zhu type, embedded directly in the casting process cast in the wind ro sleeve ring surface, so resistant materials combined with wind copper metallurgy between the substrate and the implementation.

A high temperature tungsten copper wear resistance material for a lining of a blast-furnace tuyere sleeve, which is prepared by the following raw materials in percentage by weight: 40-60% of nano copper powder, 36-56% of nano tungsten powder, 0.2-0.65% of iron powder and 4-6% of chromium powder. Metal conducts plastic deformation and is molten and diffused at high temperature and high pressure and by the aging effect at the high temperature and the high pressure, so that the high-temperature wear-resistant tungsten copper material is obtained. The high temperature wear resistance  material of tungsten copper is good in heat-conducting property, high-temperature strength and high-temperature wear-resistant property, can realize metallurgical bonding with a fine copper substrate, and can be used for manufacturing the lining of the blast-furnace tuyere sleeve, which is good in wear-resistant property and long in service life; the wear-resistant property of the blast-furnace tuyere sleeve can be improved greatly; and the service life of the blast-furnace tuyere sleeve can be prolonged greatly.

Tungsten Copper Heat Base

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).

Tungsten Copper Brick

Tungsten copper alloy brick, is also called tungsten copper brick (tungsten-copper, Cu-W, or W-Cu) 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.

Tungsten Copper Contacts Spares

Chinatungsten are able to provide kinds of tungsten copper contacts, and the tungsten copper contacts spares is a kind of tungsten copper contacts. It is used as electrode.

Tungsten copper contacts spares has good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the tungsten copper with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper contacts spares are also used as arcing edges of selector switchblades in transformer tap changers.

Tungsten copper contacts spares materials made of WCu are also characterized by the properties of high arc erosion resistance, good electrical conductivity, excellent strength, very good machinability, good thermal conductivity and low thermal expansion.

Tungsten Copper Wear Resistance

Tungsten copper wear resistance material for a lining of a blast-furnace tuyere sleeve, which is prepared by the following raw materials in percentage by weight: 40-60% of nano copper powder, 36-56% of nano tungsten powder, 0.2-0.65% of iron powder and 4-6% of chromium powder. Metal conducts plastic deformation and is molten and diffused at high temperature and high pressure and by the aging effect at the high temperature and the high pressure, so that the high-temperature wear-resistant tungsten copper material is obtained. The high temperature wear resistance  material of tungsten copper is good in heat-conducting property, high-temperature strength and high-temperature wear-resistant property, can realize metallurgical bonding with a fine copper substrate, and can be used for manufacturing the lining of the blast-furnace tuyere sleeve, which is good in wear-resistant property and long in service life; the wear-resistant property of the blast-furnace tuyere sleeve can be improved greatly; and the service life of the blast-furnace tuyere sleeve can be prolonged greatly.

The tungsten copper wear resistance nano-powder materials were milled, depending on the ratio of copper powder mixed 2_4h, first at the bottom of the prepared graphite mold Xianpu about O. 5_ thick layer of pure nano-tungsten-copper resistant materials and then mixed in different proportions holes and pure copper powder powder, copper content increased, the thickness of about I. 5mm, the surface layer of about O. 5mm holes and ー thick pure copper powder.