Abstract:The effect of pulsed magnetic field treatment on the cutting performance of carbide coated cutting tools is introduced in detail.The results show that after 1T2T pulsed magnetic field treatment，the wear of carbide cutting tools in each cutting stage is significantly lower than that of the untreated tools，and the surface quality of the machined workpiece is better.Through SEM analysis of the flank surface，it is found that more fine chips are adhered to the magnetically treated tools，forming a threebody friction system during cutting and thus reducing the wear.In addition，the Xray diffraction method is used to measure the residual stress inside the coating，and it is found that the pulsed magnetic field can effectively reduce the residual stress and properly homogenize it，so as to improve the bonding strength between the coating and substrate，which is another reason of the tool performance enhancement.