| 摘要 |
<p>PURPOSE:To produce a high strength and high electric conductivity copper alloy improved in strength by subjecting a copper alloy ingot contg. a specified amt. of Ag to hot working at a specified temp. and executing heat treatment under specified conditions in the subsequent cold working. CONSTITUTION:A copper alloy ingot contg., by weight, 1 to 10% Ag, and the balance Cu with inevitable impurities is subjected to hot working in the temp. range of 700 to 950 deg.C. At the time of subjecting it to cold working in succession, heat treatment is executed in the temp. range of 250 to 400 deg.C for 0.5 to 4Ohr in a vacuum atmosphere or in an inert gas atmosphere in the process of this cold working. In this way, the copper alloy remarkably improved in strength can be obtd. at a relatively low cost without deteriorating its electric conductivity.</p> |
