Tungsten Copper £º
¡¡ Tungsten-Copper 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. 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.
Main Specifications of W-Cu Composite
|
Type |
Density
g/cm3 |
Conductivity
%IACS |
HB
MPa |
Size
mm |
|
WCu50 |
11.9~12.3 |
¡Ý55 |
1130~1180 |
Tube: Ø3~390
Length<500
Sheet:
Width<390
Length<500
Special type:
Width<390
Length<500 |
Resistance Welding
¡¡The high physical and mechanical properties, as well as the thermal and electrical conductivity, of refractory metal composites make these materials very suitable for die inserts and electrode facings, flash and butt welding dies, and hot upsetting. They can also solve heat balance problems.
Heat Sinks
Hogen Industries developed CuW75 to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-power electronic devices. As a copper tungsten material, it¡¯s a composite, so both the thermal advantages of copper and the very low expansion characteristics of tungsten can be utilized.
The combination of these two materials results in thermal expansion characteristics similar to those of silicone carbide, aluminum oxide, and beryllium oxide, used as chips and substrates. Because of its thermal conductivity and expansion characteristics, it works well in densely packed circuits.
Typical proprerties Heat Sink of W-Cu
| Material Composition |
W-10Cu |
W-15Cu |
W-20Cu |
W-25Cu |
W-30Cu |
| Density (g/cm3) |
17.1 |
16.4 |
15.5 |
14.8 |
14.2 |
| TC (W/m¡¤K) |
191 |
198 |
221 |
235 |
247 |
| CTE (¡Á10-6/K) |
6.3 |
7.1 |
7.6 |
8.5 |
9.0 |
Electrical Contacts
¡¡Hogen Industries developed CuW75 materials to be used in oil-filled devices, air and gas circuit breakers, contactors, and high voltage switch gear. Some common applications are
¡¤arcing contacts and plates
¡¤arc runners
¡¤current carrying members
¡¤blade facings
¡¡All of our materials are produced by the press, sinter, and infiltrate process. Each manufacturing step, including the basic powder, is closely controlled, monitored, and signed off on by Quality Assurance. After completion, all manufactured lots are checked for conductivity, density, and hardness prior to shipping. This information is recorded and kept on file, and also accompanies the parts or materials when requested.
EDM and ECM
¡¡tungsten composites are used worldwide for EDM (Electrical Discharge Machining) and ECM (Electrochemical Machining) electrodes. All material is manufactured by the press, sinter, and infiltrate process. Virgin powders are used, resulting in a consistent homogeneous material giving high and even burning rates. Copper tungsten is used in plunger/sinker applications where intricate definition is required, especially in tungsten carbide.
Dimensions
Balls: ¦Õ 1.5mm -¦Õ 100mm
Shafts: £¨¦Õ1mm above£©¡Á£¨Length max.600mm£©
Sheets: £¨Thickness 0.15mm above£©¡Á£¨Wideness max.200mm£©¡Á£¨Length max.500mm£©
Square, round and rectangle sizes: diameter 550mm above
According the demanding
