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    • 7. 发明专利
    • Copper alloy and method for producing thereof
    • 铜合金及其生产方法
    • JP2005281850A
    • 2005-10-13
    • JP2004234851
    • 2004-08-11
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • MAEHARA YASUHIROYONEMURA MITSUHARUMAEDA HISASHINAKAJIMA TAKAHARUNAGAMICHI TOKIAKI
    • C22F1/08B22D21/02B22D23/00C22C9/00C22F1/00
    • C22C9/00B22D11/004B22D21/025B22D23/006C22F1/002C22F1/08
    • PROBLEM TO BE SOLVED: To provide a copper alloy which does not comprise elements harmful to the environment such as Be, and has satisfactory various performance such as electric conductivity, tensile strength and high temperature strength. SOLUTION: The copper alloy comprises two or more of Cr, Ti and Zr, the balance being Cu and impurities, wherein the particle diameter (X)(μm) of precipitates and inclusions being present in the alloy and having particle diameter of 1 m or more and the total number (N) (pieces/mm 2 ) of the precipitates and inclusions satisfy the following formula (1): logN≤0.4742+17.629×exp(-0.1133×X). The copper alloy may further comprise Ag, P, Mg or the like in place of a part of Cu. The method comprises cooling a cast piece at a cooling rate of 0.5°C/s or more at least in the temperature range from the temperature immediately after the casting to 450°C. It is desirable that after the cooling, the cast piece is worked in the temperature range of 600°C or lower or is subjected to a heat treatment wherein it is held in the temperature range of 150 to 750°C for 30 s or longer. It is most desirable that the work and the heat treatment are repeated. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供不含Be等环境的元素的铜合金,具有导电性,拉伸强度和耐高温强度等各种性能。 解决方案:铜合金包含Cr,Ti和Zr中的两种或多种,​​余量为Cu和杂质,其中存在于合金中的析出物和夹杂物的粒径(X)(μm)(μm) 1m以上,析出物和夹杂物的总数(N)(件/ mm 2 / SP>)满足下式(1):logN≤0.4742+ 17.629×exp(-0.1133×X) 。 铜合金可以进一步包含Ag,P,Mg等代替一部分Cu。 该方法包括至少在从铸造后的温度到450℃的温度范围内以0.5℃/ s以上的冷却速度冷却铸件。 理想的是,在冷却之后,将铸件在600℃以下的温度范围内进行加工,或者进行热处理,将其保持在150〜750℃的温度范围内30秒以上。 最需要重复工作和热处理。 版权所有(C)2006,JPO&NCIPI