| 摘要 |
PURPOSE:To improve the electroic discharge machining performance of a wire electrode, by installing an intermediate layer of an alloy, containing at least one type of Ni, Fe and Co, on an outer circumference of a copper or copper alloyed core material, while designing so as to install an outmost layer of a zinc alloy on the outer circumference. CONSTITUTION:The outer circumference of a copper or copper alloyed core material 1 is clad by 1-2mu in thickness with an intermediate layer consisting of metals of at least one type of Ni, Fe and Co or an alloy containing it, by means of plating, etc. In addition, its outside is covered with an outmost layer composed of zinc or a zinc alloy. Owing to this intermediate layer, a brittle compound layer vulnerable to the diffusion of copper and zinc is in no case formed there, so that not only electric discharge machining performance is well improved but also the productivity at the time of manufacturing the wire electrode becomes higher than ever before. |
