| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tool electrode for diesinking EDM (electric discharge machining) which can suppress the rise of a production cost and improve an adhesion of a coating layer for suppressing a consumption of a tool electrode conductor to the tool electrode conductor. <P>SOLUTION: In the tool electrode 40 for diesinking EDM, a hard coating layer (TiCN layer) 43 higher in hardness than the conductor 41 is provided so as to cover the conductor 41 made of copper-tantalum alloy. Between the conductor 41 and the TiCN layer 43, an intermediate layer (Ni-P plating layer) 42 which is plated by either an electroless plating process or an electrolytic plating process and has a hardness higher than that of the conductor 41 and lower than that of the TiCN layer 43 is provided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
