Properties and applications of tungsten copper alloys
A tungsten copper alloy is an alloy of tungsten and copper. The copper content of common alloys is 10% ~ 50%. The alloy is prepared by powder metallurgy method with good conductivity, thermal conductivity, good high temperature strength and certain plasticity. At very high temperatures, such as 3000 degrees Celsius, the copper in the alloy is liquefied, evaporating, absorbing large amounts of heat, and lowering the surface temperature of the material. So these materials are also called metal sweating materials.
Tungsten copper alloy integrated advantages of tungsten and copper, tungsten (tungsten high melting point melting point of 3410 DEG C, the melting point of copper is 1080 DEG C), density (tungsten density is 19.34g/cm3, the density of copper is 8.89 g/cm3); copper conductive performance, tungsten copper alloy (component range of WCu7~ micro WCu50) the uniform microstructure and high temperature resistance, high strength, resistance to arc erosion, high density; thermal conductivity, moderate, high temperature resistant materials are widely used in military, high-voltage switch with electrician alloy, EDM electrode, microelectronic materials, parts and components is widely used in aerospace, aviation, electronics, electric power, metallurgy, machinery, sports equipment and other industries.
Tungsten copper alloy in high voltage switch 128kV SF6 circuit breaker in WCu/CuCr, and the high-voltage vacuum load switch (12kV 40.5KV 1000A), is widely used in high voltage vacuum switch arrester, small volume, easy maintenance, wide application range, can be used in damp, flammable and explosive and corrosive environment. The main performance requirements are arc resistance, welding resistance, low cut-off current, low gas content and low thermal electron emission capability.