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热处理后的金属材料再经超低温处理，其机械性能明显提高，尤其是高碳高合金工模具钢的耐磨性提高更为显著。本文主要探讨了M2钢铣刀经超低温处理后耐磨性的变化情况。
After the heat treatment of the metal material by ultra-low temperature treatment, the mechanical properties significantly improved, especially the high carbon high alloy die steel wear resistance is more significant. This article mainly discusses the M2 steel milling cutter after ultra-low temperature wear resistance changes.