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通过对５种粉末（３种进口粉和２种国产粉）冶金烧结钢的车削试验，对数据分析研究，发现铁粉中的硫、锰能有效地提高烧结钢的切削性能．并对此作了机理分析．
Through the turning tests on metallurgical sintered steel of 5 kinds of powders (3 kinds of imported powders and 2 kinds of domestic powders), the data analysis and research showed that sulfur and manganese in iron powder can effectively improve the cutting performance of sintered steel. And made a mechanistic analysis of this.