| 摘要 |
PURPOSE:To improve machining speed, by using a wire electrode in which a film of Al or alloy, contained with not more than 10% Zn to Al, is formed to the surface of a copper or copper alloy wire. CONSTITUTION:A strand (a) of Cu or Cu alloy in diameter of about 1mm. is fed from a supplying machine to pass through a degreasing tank 2, water tank 3, pickling tank 4 and water tank 5 then reach a plating tank 6. A film of Al or alloy, contained with not more than 10% Zn to Al, is formed to a surface of the strand (a) in the plating tank 6. The wire, after being processed work, is wound to a winding machine 9 through a water tank 7 and drying oven 8. This wire rod is finished to a desired diameter of about 0.1mm.-0.3mm. by the stretching work. Thickness of the film is preferable not more than 30mu, and the stretching work is difficult for the thickness if not less than 30mu. Such wire electrode is used to perform electric discharge machining, and its machining speed can be improved to about 20-40% as compared with the machining speed by a conventional electrode wire. |
