Electrode wire for wire-cut spark erosion work and preparation thereof

Abstract

Abstract PURPOSE:To prevent the breakage of wire and increase working speed and improve the precision in spark erosion work by applying zinc electroplating onto the outer peripheral surface of a copper-covered steel wire and heating said wire and perfectly changing the zinc layer to the copper-zinc alloy layer. CONSTITUTION:A copper-covered steel wire 11 is immersed into zinc chloride bath, and zinc electroplating is applied to form a zinc layer having a prescribed thickness onto the outer peripheral surface of the copper-covered steel wire 11. Then, the copper-covered steel wire 11 and the zinc layer are heated in the air, and a copper zinc alloy layer is formed between the copper-covered steel wire 11 and the zinc layer, and the zinc layer is perfectly changed to zinc copper alloy layer 12. Then, these substances are pressed for wire extension and finished to the diameter of the whole to 0.2mm or so. The thickness of the copper-zinc alloy layer 12 is 0.1-15mum, and the electric-discharge performance is improved, and the adhesion of copper onto a workpiece is prevented.

Inventors

• 👤 Haruo Tominaga
• 👤 晴夫 冨永
• 👤 Teruyuki Takayama
• 👤 高山　輝之
• 👤 Yoshio Ogura
• 👤 小椋　善夫
• 👤 Tetsuo Yamaguchi
• 👤 哲夫 山口

Bibliographic Details