ELECTRODE WIRE FOR ELECTRICAL DISCHARGE MACHINING, AND METHOD FOR MANUFACTURING ELECTRODE WIRE FOR ELECTRICAL DISCHARGE MACHINING

摘要

Provided are an electrode wire (1) for electrical discharge machining, which has β brass (3) and γ brass (2) arranged on the outer peripheral surface of a core material (4), and with which the wire connection properties can be improved while improving the machining speed, and manufacturing costs minimized; and a method for manufacturing the same. This electrode wire for electrical discharge machining has an outer layer including β brass and γ brass, and a core material, the interface of which with respect to the outer layer has an undulating contour, the β brass and γ brass being densely arranged at the undulating interface. The method for manufacturing the electrode wire for electrical discharge machining includes a heat treatment step for heat treatment, under prescribed heat treatment conditions, of a parent material produced by zinc-coating the surface of the core material, and a wire drawing step for subjecting the parent material, in which β brass and γ brass have been formed on the surface of the core material through heat treatment, to a process under prescribed wire conditions to induce the γ brass to reach the core material, and form the interface of the core material and the outer layer to an undulating contour.