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Tin-free lead-free free-cutting magnesium brass alloy 发明授权

2023-07-01 2470 2121K 0

专利信息

申请日期 2025-07-08 申请号 US12631603
公开(公告)号 US8425697B2 公开(公告)日 2013-04-23
公开国别 US 申请人省市代码 全国
申请人 Chuankai Xu; Zhenqing Hu; Siqi Zhang
简介 A tin-free lead-free free-cutting magnesium brass alloy contains 56.0 to 64.0 wt % Cu, 1.05 to about 2.1 wt % Mg, 0.21 to 0.4 wt % P and other elements 0.002 to 0.9 wt % which contain at least two elements selected from Al, Si, Sb, rare earth elements, Ti and B and the balance being Zn with unavoidable impurities, accordingly a cutting percentage of the alloy is at least 80%. The process for producing such alloy is also proposed. The invented alloy is excellent in cuttability, castability, hot and cold workability, corrosion resistance, mechanical properties and weldability and particularly applicable in spare parts, forging and casting which need cutting and grinding process. The cost of necessary metal materials of the invented alloy is lower than lead-free free-cutting bismuth and antimony brass alloy and is equivalent to lead-contained brass alloy.


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