Electric discharge surface treatment electrode production involves mixing tungsten carbide powder with tungsten powder and charging the mixture in a press die for compression molding

摘要

The electrode (10) is formed by mixing WC powder (11) with W powder (12) and charging the mixture in a press die for compression molding. Electric discharge is generated between the electrode (10) and a workpiece (16) by an electric discharge surface treatment power supply device (17), to deposit components of the electrode (10), fused by discharge heat, on the workpiece (16). W, a component of the electrode, reacts with C, a constituent of a working fluid (4), to form a WC-containing hard coat (20) on the workpiece (16) along with WC, a component of the electrode (10).