The main application of tungsten copper alloy
Tungsten copper alloy combined with the advantages of tungsten and copper, the melting point of tungsten is high (3410 degrees, the melting point of iron is 1534 degrees), the density of tungsten is high (the density of tungsten is 19.34g/cm3, the density of iron is 7.8g/cm3). The thermal conductivity and electrical conductivity of copper is superior, tungsten copper alloy (the components is generally in the range of WCu7~WCu50) has uniform microstructure, high temperature resistance, high strength, corrosion resistance to arc ablation and high density. Its thermal conductivity and electrical conductivity is moderate. It is widely used in military high temperature resistant materials, high voltage switch electrical alloys, EDM electrode and microelectronic materials, as parts and components, it is also widely used in aerospace, electronics, electric power, metallurgy, machinery, sports equipment and other industries.

The tungsten copper alloy is used as a missile, a rocket engine nozzle, a gas rudder, an air rudder and a nose cone in aerospace, its main requirement is high temperature resistance (3000K~5000K) and high-temperature airflow erosion ability, it mainly takes advantage of the transpiration cooling (the melting point of copper is 1083 degrees) of copper at high temperature volatile to reduce the surface temperature of tungsten copper, to ensure the use under extreme temperature conditions.

Tungsten copper alloy is widely used in the high voltage switch 128kV, SF6 circuit breaker WCu/CuCr, as well as the high voltage vacuum load switch (40.5KV 1000A 12kV) and the arrester. The high pressure vacuum switch is small in size, easy to maintain, and can be used in wet, flammable, explosive and corrosive environments. The main performance requirements are arc ablation resistance, anti welding, small cutting off current, less gas, low hot electron emission ability.

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