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2012年10月31日星期三

Tungsten Carbide Copper Rod


Copper tungsten alloys are commonly used in EDM electrodes and other electrical and electrical/thermal applications. They are also used for facing and inserts for flash and butt welding dies, projection welding electrodes, seam welding bearing inserts and facing for electro-forming and electro-forging dies.
Although they are somewhat more difficult to machine, tungsten carbide copper materials provide high mechanical properties and excellent resistance to erosion. They are commonly used in oil devices to protect the contact from oxidation.

Tungsten Carbide Copper Alloy

Tungsten Carbide Copper is one of numerous metal alloys sold by American Elements under the tradename AE Alloys™. Generally immediately available in most volumes, AE Alloys™ are available as bar, Ingot, ribbon, wire, shot, sheet, and foil. Ultra high purity and high purity forms also include metal powder, submicron powder and nanoscale, targets for thin film deposition, and pellets for chemical vapor deposition (CVD) and physical vapor deposition (PVD) applications.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Primary applications include bearing assembly, ballast, casting, step soldering, and radiation shielding.

2012年10月29日星期一

Copper Tungsten Electrode



Copper tungsten electrode's symbol is WCu. It has good physical and mechanical properties, such as high thermal and electrical conductivity. As to its supply state, copper tungsten electrode can be offered in sintering, tuming, grinding and finishing.
The technique of copper tungsten electrode is copper infiltered tungsten block in vacuum high temperature stove. During processing, proportion of copper and tungsten can be 60W/Cu, 70W/Cu, 75W/Cu, 80W/Cu, 85W/Cu, and 90W/Cu.
Copper tungsten electrode is widely used in sealed cap for transistors sealing welder, contactor materials for high-voltage switches, electrodes for spark processing, circuit breakers, and etc.

Tungsten Copper Sheet

Copper Tungsten sheet IntroduceTungsten Copper Alloy (Copper Tungsten, 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 microstructure is therefore rather a metal matrix composite than a true alloy.
The alloy 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. 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. Sheets, rods and bars of the alloy are available as well.
Tungsten copper alloy sheet Advantages* High arc and temperature resistance
* Good electrical conductivity combined with high thermal conductivity
* Low thermal expansion

2012年10月25日星期四

What is Tungsten Copper Alloy Bar

Tungsten copper alloy bar is integrates the advantages of tungsten and copper, within which tungsten’s melting point is higher( about 3410 ℃) and density is larger (about 19.34g/cm3). Tungsten copper alloy is easy to be machined, and is widely used in spaceflight, aviation, electron, electronic power, metallurgy, mechanism etc.

Tungsten copper alloy has different objects, such as rod, flat, bar, square, circle, ring, pipe, tube, bush and so on. And tungsten copper alloy bar is a kind of tungsten copper alloy, whose shape is bar, its transverse surface could be polygon, round or any other shape that you want. Chinatungsten supply tungsten copper alloy bar of high physical and mechanical properties, and we cut it to customers' desired lengths in diameters between 50.8mm to 19050mm. In addition, we set from Dia.1mm to Dia. 60mm, length 200mm tungsten copper alloy bar as standard. What’s more, Chinatungsten offer three different surface processes or finishes according to your demand: black, cleaned and ground.

Tungsten Copper Alloy Bar, the advantages of:
High conductivity, high temperature sintering, and melting refined copper are from the process of composite materials. In addition, there are arc off a good performance, good thermal conductivity, thermal expansion of small, high-temperature non-softening, high-intensity, high-density, high hardness and so on.

2012年10月24日星期三

Copper Tungsten Bar Application

Copper tungsten bar is widely used to make Grid siderod, Lead, Support, and Electrode for the Gas discharge lamp, because of the high electrical conductivity and low consumption.
1. Resistance welding electrode
Copper tungsten bar integrates such features of tungsten and copper as high temperature resistance, electrical arc ablation resistance, high proportion, good electrical and heat conductivity, being easy to cut and transpiration cooling. It also owns such advantages of tungsten as high hardness, melting point and adherence resistance. It is often used for projection welding and butt-welding electrode with wear and high temperature resistance.
2. Electric spark electrode
Copper tungsten bar is used for the electrode of mould made from tungsten steel and high-temperature and ultra hard alloy. The common electrode has high consumption and low rate. The high electrical ablation rate, low consumption ratio, precise electrode size and quality processing performance of Copper tungsten can ensure that the precision of the work piece is greatly enhanced.
3. High-voltage discharge tube electrode
When the high-voltage vacuum discharge tube is working, the temperature of contact material will rise to thousands degree centigrade within several tenths seconds. High ablation resistance, high toughness, good electrical and heat conductivity of Copper tungsten provide necessary conditions to stable operation of the discharge tube.
4. Electrical seal material
Copper tungsten bar owns not only the low expansion of tungsten and high heat conductivity of copper. Its expansion index and heat conductivity can also be changed through changing the content of the materials, which provides convenience to the using of the material. We can supply various specifications and the Copper tungsten alloys with different tungsten proportions.

Copper Tungsten Bar Description

Copper tungsten bar is the composite of tungsten and copper, which own the excellent performances of tungsten and copper, such as heat-resistant, ablate-resistant, high-intensity, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electrical power, electron, metallurgy, spaceflight and aviation. Using CIP formation, sintered tungsten skeleton and infiltrating copper (silver) technology, large size and special shape products of tungsten-copper (silver) composites with 6-90 percent of copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket, We can also produce sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.

2012年10月22日星期一

Tungsten Copper Block

Tungsten copper is a copper and tungsten alloy that is used to conduct heat and electricity. Tungsten copper consists of 10 to 50 percent of its weight in copper and the remaining portion is made out of tungsten. The lower the copper content, the higher its density and hardness is.
About Tungsten Copper Block
Tungsten copper block is an alloy that is made by pressing tungsten or tungsten carbide, sintering the pressed tungsten at a high temperature, and then infiltrating it with copper. Sintering is a metallurgic process by which a metallic powder is made into a coherent mass by heating without melting. The physical properties of both tungsten and copper make them not mutually soluble, meaning that one cannot be combined with the other, similar to the way oil and water will not mix. The alloy is made by dispersing the particles of one metal into a matrix or crystallized pattern of another. This makes tungsten copper's "micro-structure" or molecular shape that of a metal matrix composite and not of a true alloy.

Tungsten Copper Rod

Features: W-Cu is the use of high purity tungsten powder characteristics and excellent high-purity copper powder metal plasticity, high electrical conductivity, etc., by isostatic pressing, high temperature sintering, melting refined copper infiltration process of composite materials. Breaking arc performance, good thermal conductivity, small thermal expansion, the high temperature softening, high strength, high density, high hardness.
Uses:
1. Resistance welding electrode: a combination of the advantages of tungsten and copper, high temperature resistance, arc erosion, high strength, heavy, electrical conductivity, thermal conductivity, and easy machining, and other characteristics with the sweat of cooling, as with the tungsten high hardness, high melting point, anti-adhesion characteristics, is often used to do a certain wear resistance, high temperature welding, welding electrodes.
2. EDM Electrode: tungsten steel for high temperature super-hard alloy die to be produced by electrical erosion, the common electrode wear big, slow, and the tungsten and copper corrosion, high speed, low loss rate, the exact electrode shape, excellent processing performance, to ensure the accuracy of parts to be machined greatly increased.
3. High-voltage discharge electrode: high-voltage vacuum discharge tube at work, contact material will be a few seconds of time in the zero temperature thousands of degrees Celsius, while the anti-ablation properties of tungsten and copper, high toughness, good electrical conductivity, thermal conductivity performance to the discharge tube to provide the necessary stability conditions.
4. Electronic Packaging Materials: Tungsten, low expansion characteristics of both, but also has high thermal conductivity properties of copper, the thermal expansion coefficient and thermal conductivity of conductive material can be adjusted to change the composition and, thus provides a convenient use of materials.
Chemical composition:
The main chemical composition%: W W70.00 copper Cu30.00
Applications: welding electrodes, EDM electrodes, high voltage discharge electrodes, electronic packaging materials.
Physical and mechanical properties:
Density g/cm3 :13.8-14 conductivity% IACS: 42 Hardness: 185HV bending strength Mpa: 700 softening temperature ℃: 900

2012年10月19日星期五

Tungsten Copper Alloy Products


If you are looking to make a robust and lifelong welding using tungsten copper you do not need to worry anymore. We use the best tungsten copper which is much stronger due to it being composed of an even sturdier alloy.
This sintered tungsten copper alloy may be used in heavy spot and projection welding projects. Our tungsten copper is manufactured metallurgically and contains 50-80% tungsten. The structure is smooth, very hard and has high elasticity. The most important reasons for Brouwer Metaal to work with tungsten copper is its unrivalled versatility. We use tungsten copper in our products, because it has a very high melting point and this results in a very stable and safe product. Additionally, tungsten copper is a very good conductor this allows it to be used in electrodes that you use in resistance welding.
The products designed by us, Chinatungsten Online, are guaranteed to have been tested thoroughly in relation to all international guidelines. This ensures a high quality product allows you to do your resistance welding with the greatest precision. The construction of this alloy permits a degree of reliability and makes sure that as customer you do not need to hesitate anymore whether the welding will break or not.
For more information on how to obtain this product you can contact us by email: sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service all the time.

2012年10月17日星期三

Copper Tungsten Tips


Qualitative range of copper tungsten contact rivets that we offer is widely appreciated by our various clients and is available in various specifications. We manufacture these Rivets using high quality of raw material which is soured from our reliable vendors throughout the world. We do complete quality and performance measure inspection of these Rivets at various level of manufacturing unit in order to gain high performance, stable contact resistance durability and good current & thermal conduction, less & even electrolytic corrosion.
In order to fulfill the demand of various electrical and automobile industries, we offer supreme quality of copper tungsten contact rivets that are designed for thermostat, motor breaker, wall switch, IC lead frame and other related applications. These are available in different specifications with respect to capacity and power. We supply these contact rivets to various parts of the country at reasonable price.

Copper Tungsten Beads


Our pre-drilled copper tungsten beads are environmentally friendly and offer fly tiers advantages that brass and lead beads do not. Because Tungsten Beads are much denser than lead and brass, nymphs and other wet fly patterns with Tungsten Beads will sink at a faster rate allowing your fly to dig deeper in fast-moving water. Plus, our Copper Tungsten Beads are extremely well-balanced and sport a durable copper finish for extra fish-attracting flash. 20 pack.

2012年10月15日星期一

Copper Tungsten Electrode

What's electrodes?
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit. The word was coined by the scientist Michael Faraday from the Greek words electron and hoods, a way.
Copper tungsten is a good use of high-purity tungsten metal powder and high purity characteristics of the plasticity of copper powder, the advantages of high conductivity, the static pressure molding, high temperature sintering, melting refined copper from the process of composite materials. Arc off a good performance, good thermal conductivity, thermal expansion of small, high-temperature non-softening, high-intensity, high-density, high hardness.

Resistance welding electrode
A combination of the advantages of tungsten and copper, high temperature resistance, electric arc ablation, high intensity, than the major, conductive, thermal conductivity, and ease of machining, and it has features such as cold sweating, as with tungsten high hardness, high melting point, anti-adhesion characteristics, often used to do a certain resistance to abrasion, resistant to high temperature welding, butt welding electrode.

EDM electrode
In view of tungsten steel, high temperature super-hard alloy die to be produced by corrosion, the common electrode wear big, slow, and the copper tungsten electrical corrosion of high speed, low loss rate, precise electrode shape, excellent processing performance, to ensure the accuracy of processing pieces of greatly increased.

High-voltage electrode discharge tube
High-voltage vacuum discharge tube in the workplace, the contact material in a few seconds of time zero temperatures thousands of degrees celsius, while the copper tungsten anti-ablation properties, high toughness, good electrical conductivity, thermal conductivity performance to the discharge tube to provide the necessary stability conditions.

Electronic packaging materials
Both the low-expansion properties of tungsten, but also has high thermal conductivity properties of copper, its thermal expansion coefficient and thermal conductivity of conductive material can be adjusted to change the composition and thereby to the material provided to facilitate the use.

2012年10月14日星期日

Tungsten Copper Alloy Components Properties

Tungsten Copper Alloy Components Physical Properties
Tungsten copper alloy is a metal with a distinct reddish or orange tint, with a metallic luster. The cubic crystalline structure is face-centered, and reflects only red and orange colored light from the visible spectrum, giving it the familiar reddish hue. Compared to adjacent metals in the periodic table, copper is harder than zinc but softer than iron. The metal is malleable, meaning that it can be elongated with pressure and molded into different shapes. Copper is also ductile, which enables it to change form and be stretched into long thin structures without breaking. Tungsten copper alloy components properties, along with its ability to conduct electricity extremely well, make copper suitable for use in electrical cable manufacturing, where these physical attributes are particularly desirable.

Tungsten Copper Alloy Components Chemical Properties
The atomic number of copper used in wires is 29, meaning it has 29 protons. Copper's symbol is "Cu," and its atomic weight is 63.54. Copper is placed in column 1B in the periodic table, along with silver and gold, whose symbols are "Ag" and "Au," respectively.Tungsten copper alloy components have a Moh's hardness (a system of measurement to evaluate the hardness of metals) of between 2.5 and 3. Tungsten copper alloy components used in manufacturing wires has a very high specific gravity of 8.2, which is much higher than other substances of industrial interest, such as water (1.0), carbon (2.2) and sulfur (2.1). The specific densities of silver and gold are both higher than copper, at 10.5 and 19, respectively. Copper wires have low chemical reactivity; in reaction with other elements, laboratory copper has a charge of +1, known as cuprous or +2, known as cupric.

2012年10月11日星期四

Tungsten Copper Plate

Introduction
All of our tungsten copper products are produced by sinter, and infiltrate process with high purity tungsten powder and oxygen-free copper. With accurate percentage composition of tungsten and copper,well-proportioned organization and high precision machining are the tungsten copper plates from Luoyang Achemetal Co., Ltd superior in quality.

The advantages of the tungsten copper plates:
High thermostability
High arc resistance
High strength
High electrical conductivity and thermal conductivity
Heat sink character

Application
Our tungsten copper plates are widely used in many industrial areas such as aerospace, power, electronic, metallurgy, mechanical to make:
Cooling device in electronic equipment
Electrodes in Resistance welding machine
Arcing contacts and vaccum contacts in high and medium voltage breakers or vaccum interruptors
Heat sinks as passive cooling elements of electronic devices and Electronic packaging materials.
The components of the pushing device in spacecrafts

Chemical composition and physical mechanical properties
The tungsten copper plates from Luoyang Achemetal co., Ltdcomply with china standard GH 8320-87

2012年10月10日星期三

Copper Tungsten Plate


Our major product of copper tungsten sheet, copper tungsten plate, block and bar is very popular used as EDM electrode. This material has both tungsten and copper's character, for example: copper is good for electrical conductivity, tungsten is good for the hardness. Our copper tungsten plate for EDM is made by vacuum infiltration technology. Which product has very good physical and mechanical properties with excellent wear resistance.
Our copper tungsten plate has below advantage:
-Maturity press- sinter- infiltration process.
-high electrical conductivity gets high erosion speed.
Copper Tungsten Typical Properties
Material
Composition
Density
Electrical Conductivity
Hardness
Class
RWMA Group B
WD™10055
55W45CU
12.3 g/cm3
49 % IACS
70 HRB
10
10.74450
WD™10060
60W40CU
12.75 g/cm3
47 % IACS
76 HRB


WD™10065
65W35CU
13.3 g/cm3
44 % IACS
82 HRB


WD™10070
70W30CU
13.9 g/cm3
42 % IACS
88 HRB


WD™10075
75W25CU
14.5 g/cm3
38 % IACS
94 HRB
11
11.74400
WD™10080
80W20CU
15.2 g/cm3
34 % IACS
98 HRB
12
12.74350

2012年10月9日星期二

Copper Tungsten Alloy

Copper tungsten alloy is the composite of Tungsten and Copper, which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity, excellent thermal and electrical conductivity. Tungsten copper alloy is easy to be machined. Tungsten copper alloy is used widely in such industries as engine, electrical power, electron, metallurgy, spaceflight and aviation. Using CIP formation, sintered tungsten skeleton and infiltrating copper technology, large size and special shape products of tungsten copper composites with 6-90 percent of copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket, We can also produce tungsten copper alloy sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.
Copper Tungsten alloy 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.
Parts are made from the tungsten copper 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 tungsten copper alloy are available as well.
Commonly used copper tungsten alloy contains 10 to 50 wt. % of copper, the remaining portion being substantially all tungsten. The typical properties of the alloy depend on its composition. The alloy with less wt.% of copper has higher density, higher hardness and higher resistivity. The typical density of CuW90 alloy, with 10% of copper, is 16.75g/cm3 and 11.85g/cm3 for CuW50 alloy. CuW90 has higher hardness and resistivity of 260 HB kgf/mm2 and 6.5 μΩ.cm than CuW50.

2012年10月8日星期一

Tungsten Copper Alloy Applications

Tungsten alloy is the composite of Tungsten and Copper which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity,high-density, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and avigation.Using CIP formation, sintered tungsten skeleton and infiltrating copper technology, large size and special shape products of tungsten copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket. We can also produce sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.
1,High performance materials used in spaceflight field
Tungsten Copper alloy has such excellent performances as heat-resistant, ablate-resistant, high - intensity, high-density and self-cooling,so it is widely used in spaceflight field.
2,Electrical Contact materials
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. Our tungsten Copper materials are used owing to their unique physical properties.
Advantages: without other element except Tungsten and Copper, uniform material, low content of gas and impurity, very high burn-off resistance, excellent thermal and electrical conductivity, all necessary joining and machining processes.
3,Electrodes for Spark Erosion
Our WCu electrodes are best suitable for EDM machining of those materials.
Advantages: low wear, high contour sharpness, good machinability.
Types of product: rods, tubes and plates.

Tungsten Copper Ring


Tungsten copper ring have high physical and mechanical properties, as well as high thermal and electrical conductivity, these prosperities make our materials very suitable for the die inserts and electrode facing.
Our copper tungsten alloys are designated as ASTMB702, RWMA Class 10, RWMA Class 11, RWMA Class 12, and GB/T8320-2003.

Typical properties:
Material
Composition
Density
Electrical Conductivity
Hardness
Class
CuW55
55W:45Cu
12.3 g/cm3
49% IACS
76 HRB
10
CuW60
60W:40Cu
12.75 g/cm3
47% IACS
82HRB

CuW65
65W:35Cu
13.3 g/cm3
44% IACS
88HRB

CuW70
70W:30Cu
13.8 g/cm3
42% IACS
94HRB
11
CuW75
75W:25Cu
14.5 g/cm3
38% IACS
98HRB
12
CuW80
80W:20Cu
15.15 g/cm3
34% IACS
109HRB