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利用自制的磁化装置对W6Mo5Cr4V2高速钢刀具进行磁化处理,并利用测量仪器分析对比不同磁化参数下高速钢刀具磨损以及工件加工质量的变化情况,并通过观察高速钢试样表面形貌和设计隔绝氧气切削和普通切削对比试验,探究刀具磁化后切削性能得到提升的机理。试验结果表明:磁化参数对磁化效果影响较大,且W6Mo5Cr4V2高速钢刀具最佳磁处理参数为30V、5 Hz、60s。磁场能促进微小磨屑的表面吸附,进而提高刀具的切削性能,且氧气的存在对工件表面粗糙度有一定的影响。磁化处理对高速钢残余奥氏体转变率的影响不是提高高速钢刀具耐磨性以及工件表面质量的主要原因。
The W6Mo5Cr4V2 high-speed steel tool was magnetized by a self-made magnetizing device. The wear of the high-speed steel tool under different magnetization parameters and the change of the quality of the workpiece were analyzed and compared with measuring instruments. The surface morphology and design of the high- Cutting and conventional cutting comparison test to explore cutting tool magnetization improved machinability mechanism. The experimental results show that the magnetization parameters have a great influence on the magnetization effect, and the optimum parameters of W6Mo5Cr4V2 HSS tool are 30V, 5 Hz and 60s. The magnetic field can promote the surface adsorption of tiny wear debris, thereby improving the cutting performance of the tool, and the presence of oxygen has a certain impact on the surface roughness of the workpiece. The effect of magnetization on the retained austenite transformation rate of high-speed steel is not the main reason to improve the wear resistance of high-speed steel tool and the surface quality of the workpiece.