Due to the increasing requirement of mould and intractable materials, tungsten copper has been widely used in electrode. Tungsten copper has many advantages, such as higher precision, lower wastage, high MRR (Material Removal Rate) as well as it can be finishing and roughing at one time. At the present, tungsten copper electrode plays an important role electrical discharge machining (EDM). According to incomplete statistics, Japan has 19.6 tons in tungsten copper electrode consumption in 1994 year, which accounts for a quarter of the aggregate consumption of tungsten copper (74.5 tons).
Except good conductivity, high MRR and easily to be machining, tungsten copper electrode is supposed to have:
1. Good arc ablation resistance.
2. Uniformity and Density.
3. Diverse shape and should be suited to small demands.
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