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本文阐述重力铸造条件下，生产优质高锡青铜的一种方法，全文侧重于熔炼工作的改进。将２５ｍｍ厚基尔试块（砂型）的力学性能作为考核的依据，并以厚断面上疏松程度的改善作为辅助的判据。材料成分要求：８８．０～９０．０％Ｃｕ、１０．０～１２．０％Ｓｎ、０．３～０．６％Ｎｉ，≤０．３％Ｐ、≤０．５０％Ｚｎ、Ｐｂ和其它杂质总量。砂型试块力学性能要求：σ０．２≥１５８Ｎ／ｍｍ２、σｂ≥２６１．８Ｎ／ｍｍ２、δ４≥１０％、ＨＢ≥７０
This article describes a method of producing high-quality, high-tin bronze under gravity casting conditions with a full text focusing on improvements in smelting work. The mechanical properties of 25mm thick Kiln block (sand type) are taken as the basis for evaluation, and the improvement of looseness on the thick section is taken as the auxiliary criterion. Material composition requirements: 88.0 ~ 90.0% Cu, 10.0 ~ 12.0% Sn, 0.3 ~ 0.6% Ni, ≤ 0.3% P, ≤ 0.50% Zn, Pb and The total amount of other impurities. Sand test piece mechanical properties requirements: σ0.2 ≥ 158N / mm2, σb ≥ 261.8N / mm2, δ4 ≥ 10%, HB ≥ 70