Tungsten contact is used in the switch to connect or disconnect the circuit. Tungsten contact has a wide range of applications, covering all fields, such as industry, agriculture, science, technology and national defense as tungsten has the advantages of smooth surface, high hardness, high abrasion resistance, excellent resistance to arc erosion, strong ability to interrupt current, small thermal expansion coefficient and low vapor pressure.

Tungsten carbide powder producing process includes several major steps, namely ingredients calculation, mixing, carbonizing and milling of materials.

Tungsten copper activated liquid phase sintering can improve the miscibility between tungsten and copper and promote the sintering process by means of adding a small amount of Co, Ni, Fe, Pd and other activated elements.

Tungsten copper mechanical alloying is a kind of sintering method by high-energy ball milling.

Tungsten Powder + Copper Powder → High-energy Ball Milling (100 hours, Ar) → Sieving → Pressing (40% Relative Density, 1000~1300℃, H2, 1 hour) → Sintering.

Nanometer tungsten carbide powder can be used as additive materials for high density alloy and tungsten bar and wire, as the combustible agent of explosive industry.

Tungsten powder application is very wide, tungsten powder is the main raw materials of tungsten products and tungsten alloys. 

Tungsten copper co-reduction process is a kind of method sintering in reductive atmosphere after mixing tungsten and copper oxides powder, pressing and forming.

Tungsten copper infiltration is to manufacture tungsten skeleton with density and strength, then filled in copper liquid under capillary force. And it can be divided into infiltrated Cu after high-temperature sintering skeleton and mix powder infiltration after low-temperature sintering.