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在MLD—10型动载磨料磨损试验机上对ZGMn13高锰钢进行了3.5J冲击能量、不同磨料的磨损试验,计算了失重量和工作方向长度损失量,并采用扫描电子显微镜(SEM)观察了试样的磨损面和亚表层,用显微硬度计测试了亚表层硬度变化趋势,研究了磨料类型对ZGMn13磨损机理的影响。结果表明,磨料类型对ZGMn13磨损机理有显著影响,硬磨料下,磨损机理为显微疲劳和片层状剥落,软磨料下磨损机理为显微疲劳和显微切削,软磨料下ZGMn13的使用寿命远高于硬磨料下的寿命。
ZGMn13 high manganese steel was subjected to 3.5J impact energy and wear test of different abrasives on MLD-10 dynamic abrasive abrasion testing machine to calculate the weight loss and working length loss. The scanning electron microscopy (SEM) The wear surface and subsurface of the sample were tested by microhardness tester. The influence of abrasive type on the wear mechanism of ZGMn13 was studied. The results show that the abrasive type has a significant effect on the wear mechanism of ZGMn13. Under hard abrasive, the wear mechanism is micro-fatigue and lamellar exfoliation. The wear mechanism under soft abrasive is microscopic fatigue and microsection, and the service life of ZGMn13 under soft abrasive Much higher than the hard abrasive life.