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    • 78. 发明授权
    • Copper-based alloy excellent in dezincing resistance
    • 铜基合金耐脱落性优良
    • US06942742B2
    • 2005-09-13
    • US10694792
    • 2003-10-29
    • Yoshinori Yamagishi
    • Yoshinori Yamagishi
    • C22C1/02C22C9/00C22C9/02C22C9/04C22F1/08
    • C22C9/04C22F1/08
    • A copper-based alloy excellent in dezincing resistance comprises, in percentage by weight, Cu: 57-69%, Sn: 0.3-3%, Si: 0.02-1.5%, Bi: 0.5-3%, and Pb: not more than 0.2%, where the ratio of Si/Sn expressed in weight percentage is in the range of 0.05-1 and apparent zinc content as defined by the following formula is in the range of more than 39-50 wt. %, and the balance of unavoidable impurities: Apparent Zn content=[(Zn %+2.0×Sn %+10.0×Si %)/(Cu %+Zn %+2.0×Sn %+10.0×Si %)]×100. Despite the fact that contains no added environment-unfriendly Pb, the alloy exhibits enhanced cuttability, together with excellent forgeability, dezincing resistance and hot forgeability.
    • 耐烧蚀性优异的铜基合金,以重量百分比计含有Cu:57-69%,Sn:0.3-3%,Si:0.02-1.5%,Bi:0.5-3%,Pb:不大于 0.2%,其中以重量百分数表示的Si / Sn的比例在0.05-1的范围内,由下式定义的表观的锌含量在大于39-50重量%的范围内。 %,余量为不可避免的杂质:表观Zn含量= [(Zn%+ 2.0×Sn%+ 10.0×Si%)/(Cu%+ Zn%+ 2.0×Sn%+ 10.0×Si%)]×100。 尽管不含添加环境不利的Pb这一事实,但合金表现出增强的切割性能,以及优异的可锻性,抗起弧性和耐热锻造性。