| 摘要 |
PURPOSE:To produce the titled alloy having high strength, plating characteristics, etc., without applying it to hot working by successively executing surface grinding, cold working, heating, cooling, surface cleaning, cold working and heat treatment to the ingot of a copper alloy contg. specific ratios of Fe, Sn, Ni, etc., under specific conditions. CONSTITUTION:The copper alloy contg., by weight, 0.1-5.0% Fe, furthermore contg. total <=5.0% of one or more kinds among <=1.3% Sn, <=2.5% Ni, Si, etc., and <=0.5% Mg, As, etc., and consisting of the balance Cu with inevitable impurities is subjected to continuous casting to grind the surface of said ingot. The ingot is then cold worked at 20-95% working ratio, is heated for 5sec-24 hr at 300-950 deg.C in a nonoxidizing atm. and is thereafter cooled at 0.01-500 deg.C/sec cooling ratio. The surface of the material is cleaned by melting or grinding; the material is thereafter cold worked at 5-90% working ratio, is subjected to heat treatment for 5sec-24hr at 200-650 deg.C in the nonoxidizing atm. and the above-mentioned surface cleaning, cold working and heat treatment are repeatedly executed to the material at need.
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