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通过正交试验法研究了交变磁化处理时电流频率、励磁电压、处理时间对W6Mo5Cr4V2高速钢耐磨性能的影响,并对工艺进行了优化,利用扫描电镜和能量分散谱仪分别观察其表面形貌和测定其表面成分。结果表明,经交变磁化处理的W6Mo5Cr4V2高速钢试样的磨损量及摩擦系数均有一定程度的降低,磁化参数具有较大影响。磨损表面的扫描电镜和能谱分析表明,氧化减磨机理及其磨粒润滑机理起主导作用,施加的作用载荷大小不同,产生保护摩擦磨损表面的最佳氧化膜厚度的磁场强度大小也不同,高速钢在低载荷工况下工作时,磁处理提升其耐磨性效果更明显。
The effect of current frequency, excitation voltage and processing time on the wear resistance of W6Mo5Cr4V2 high speed steel during alternating magnetization treatment was studied by orthogonal test. The process was optimized. The surface morphology was observed by SEM and energy dispersive spectrometer Appearance and determination of the surface composition. The results show that the amount of wear and the friction coefficient of the W6Mo5Cr4V2 HSS treated by alternating magnetization decrease to a certain degree, and the magnetization parameters have a greater impact. Scanning electron microscopy and energy spectrum analysis of the worn surface show that the oxidation reduction mechanism and its abrasive lubrication mechanism play a leading role and the applied load is different in size and the magnetic field strength of the optimal oxide film thickness for protecting the friction and wear surface is also different. High-speed steel working under low load conditions, the magnetic treatment to enhance its wear resistance effect is more obvious.