Tungsten Chromium - Copper Composite Material

The present invention describes a tungsten chromium - copper composite material. Characterized in that:

Percentage by weight of the composition comprises the following components: from 32% to 50% tungsten, 11% to 23% chromium, 27% ​​-57% of copper, the sum of the components is 100% by weight.

Preparation steps are as follows:

The tungsten powder and chromium powder mixing, granulating, pressed into billets, and then by sintering copper liquid infiltration, after homogenization treatment and aging treatment system. The compositions especially as 110kV high-voltage vacuum circuit breaker above the contact material, its dense, with good conductivity, moderate hardness, low gas content, the lower closure value, excellent performance and arc burning welding resistance.




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