| 摘要 |
PROBLEM TO BE SOLVED: To provide a low cost electrode wire for electric discharge machining having a machining performance almost similar to that of a tungsten electrode wire for electric discharge machining. SOLUTION: The composition of a core material is defined as tempered martensite formed by hardening and tempering a steel material with carbon content of 0.50-1.20 wt.%, a tensile strength of the electrode wire under a high temperature thus becomes an approximately same level to the tensile strength of the tungsten electrode wire for the electric discharge machining. This constitution can provide the electrode wire for the electric discharge machining withstanding the electric discharge machining under the high tensile force. Because the core material is a steel material, the material cost and the manufacturing cost are reduced compared with those of the tungsten and this electrode wire for the electric discharge machining can be manufactured at the same manufacturing cost with that of a brass coated steel wire. COPYRIGHT: (C)2006,JPO&NCIPI
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