ELECTRODE WIRE FOR WIRE ELECTRIC DISCHARGE MACHINING

摘要

PROBLEM TO BE SOLVED: To provide an electrode wire for electric discharge machining to reduce the occurrence of wear of the feeder of an electric discharge machine without machining by lowering a wire tension exercising an influence on machining precision. SOLUTION: A plurality of rib-form grooves with a groove depth of 0.9-1.5μm in the same direction as that of an electrode wire for electric discharge machining are formed in the surface of an alloy wire the containing component of which consists of 25-40 wt.% Zn, and a rest part being Cu and inevitable impurities. Or the surface of an alloy wire having a smooth surface and the containing component of which consists of 25-40 wt.% Zn and a rest being Cu and inevitable impurities is coated with a nitrogen compound with a thickness of 1μm or less. Or by using an electrode wire 1a for electric discharge machining having the composite structure of the surface of the electrode wire 1a for electric discharge machining, and by reducing a friction factor between the feeders 6a and 6b of an electric discharge machine and the electrode wire 1a for electric discharge machining, the occurrence of wear of the feeders 6a and 6b is suppressed.