| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electrode wire for high-speed machining for preventing short circuit between the electrode wire and an object to be machined, and not only increasing machining speed but also suppressing loss in machining precision and generation of fine lines and metal powder on the machined surface, by preventing granular matter of a copper-zinc diffused alloy layer formed on the outer peripheral surface of the electrode wire from peeling from a core wire. <P>SOLUTION: In a step in which a wire material that is provided on the outer peripheral surface of the copper-zinc alloy layer and a zinc layer produced by thermal diffusion is drawn and reduced to the diameter of a product, the copper-zinc alloy layer is reliably crushed into granular matter, the diffused alloy layer 3 and the zinc layer 4 are integrated with the core wire by embedding the granular matter in the outer peripheral surface of the core wire 2, and the diffused alloy layer and the zinc layer are therefore prevented from peeling from the core wire. In addition, since cracks in the copper-zinc alloy layer generated in the wire drawing step are covered by a thin zinc film, the wire is drawn at temperature favorable to the ductility of zinc. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
