| 摘要 |
PURPOSE:To retard breaking of an electrode wire, to improve the accuracy of a machined face drastically and to improve the machining speed remarkably, by dispersing micro particles of diamond onto the outer circumferential face of the electrode wire. CONSTITUTION:Micro particles 2 of diamond are dispersed onto the outer circumferential face of an electrode wire 1. The grain size of said diamond is selected properly based on the diameter of the electrode wire 1 or machining conditions, and preferably selected to be less than 10% of the diameter of the electrode wire 1. Since the diamond micro particles 2 are substantially electrical insulating material, they can prevent shortcircuit between the electrode wire 1 and a work and prevent breaking of the electrode wire. Furthermore, since the diamond micro particles 2 polish the machining face continuously, the accuracy of the machining face can be improved drastically. The diamond micro particles 2 on the outer circumferential face also exhibit mechanical polishing effect similar to a wire saw, thereby machining speed can be improved remarkably.
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