Tungsten Copper Electrode Infiltration Process

Tungsten copper electrode production process flow sheet as follow:

1. Preparation: Firstly, put tungsten powder, induced copper powder in ball grinding mill, and add 1% of stearate and dried and sieved to thereby obtain mixed powder after a while.
2. Compacting: Hydraulic machine pressing, we should concern the weighing in case of the loss of powder loss during the compacting process,
3. Degreasing: Using H₂ as protective atmosphere when thermal degreasing, adhesive must be removed in order to avoid contamination and clean sintering furnace.
4. Sintering: Sintering in molybdenum wire furnace, H₂ as protective atmosphere.
5. Infiltration: Using H₂ as protective atmosphere and infiltrated copper at 1200-1300℃.
6.After-processing: The infiltrated tungsten copper alloy electrode after annealing treatment to improve the performance of the alloy, and then subjected to a surface treatment to remove excess copper.

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