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本文介绍了激光表面淬火的机理及５０Ｍｎ材料ＣＯ２激光表面淬火的试验过程，并对试验结果进行了详细分析，提出了淬火过程中对激光功率密度、扫描速度等参数选择的一般愿则．最后介绍了５０Ｍｎ钢零件批量淬火的情况．
This paper introduces the mechanism of laser surface quenching and CO2 laser surface hardening test of 50Mn material. The experimental results are analyzed in detail. The general rules for choosing laser power density, scanning speed and other parameters in quenching process are proposed. Finally introduced the 50Mn steel parts batch quenching situation.