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研究了硼、钒、钛、稀土对高铬铸铁的变质处理．结果表明多元联合变质使高铬铸铁性能有较大提高
The modification of boron, vanadium, titanium and rare earth on high chromium cast iron was studied. The results show that the multi-joint metamorphism has greatly improved the performance of high-chromium cast iron