2Cr13 stainless steel is a typical difficult to machine material,which has the characteristics of large milling force,high milling temperature,strong work hardening trend,strong chip adhesion,and severe tool wear during the milling process.In this paper,two types of RCKT 1606 circular milling inserts with different coatings,AlCrN(PVD)and TiCN-Al2O3-TiN(CVD),are selected to carry out milling experiments on 2Cr13 stainless steel,and the wear properties and fail-ure mechanism of the two types of coated stainless steel are analyzed.The results show that after milling for 10 m with TiCN-Al2O3-TiN coated inserts,the wear of the rear surfaces of the two inserts exceeds 0.3mm,and the cutting edges have broken.After milling 10m with AlCrN coated inserts,the wear of the rear surfaces of both inserts exceeds 0.12mm.In the milling process of2Cr13 stainless steel,the use of AlCrN(PVD)coating can effectively improve the cutting life of the tool.
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