脉冲磁场对硬质合金涂层刀具切削性能的影响  

Effect of Pulsed Magnetic Field on Cutting Performance of Carbide Coated Tool

作　　者：吴俊杰[1] 张天暖 杨屹[1] 杨刚[1] Wu Junjie;Zhang Tiannuan;Yang Yi;Yang Gang

机构地区：[1]四川大学,成都市610065

出　　处：《工具技术》2021年第1期31-35,共5页Tool Engineering

摘　　要：介绍了脉冲磁场处理对硬质合金涂层刀具切削性能的影响。结果表明,在1T-2T的脉冲磁场处理后,硬质合金刀具在各切削阶段后的磨损量都明显低于未处理刀具,并且切削工件的表面加工质量更高。通过后刀面的SEM分析,发现磁处理刀具粘附有更多的细小铁屑,在切削时形成三体摩擦体系,从而减少磨损量;此外,通过X射线衍射法测量刀具涂层内部的残余应力,发现脉冲磁场能够有效减小残余应力,并适当使其均匀化,从而提高涂层与基体的结合强度,这也是提高刀具切削性能的另一原因。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.

关 键 词：脉冲磁场 涂层刀具 切削性能 磨损量 残余应力 

分 类 号：TG156.97[金属学及工艺—热处理] TG113.26+4[金属学及工艺—金属学]