| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode wire for wire discharge work capable of achieving high speed compared to conventional wires for suppressing processing cost low. SOLUTION: Copper alloy or copper-coated steel wire is used as a center core material 2, a high zinc density copper - zinc alloy layer 3 with 45-65 wt.% zinc density is formed in 10-20% thickness of finished outer diameter, and a surface layer on its outer circumference is ground. A zinc plating layer 4 is further provided with 0.5-3% thickness of total finished outer diameter to provide this electrode wire 1 for wire discharge work. After the high zinc density alloy layer is formed, a rough part in the surface layer is shaved by a shaving die or the like only for a part where adhesion of electroplating is kept, so that a void layer 5' as in conventional devices is eliminated. Peeling of plating is thus eliminated, and the high zinc density layer which affects processing speed can be left to the utmost. High speed processing can thus be achieved.
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