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以NM400耐磨钢板为研究对象,实验模拟其在实际工况下的磨损方式,结合失重分析及磨损表面观察,研究试验材料在冲蚀磨损及搅拌磨损下的耐磨机理。结果表明,试验钢的组织主要为板条马氏体及分布在板条上的碳化物颗粒;在大角度冲蚀磨损中,NM400耐磨钢的磨损主要为塑性变形产生的冲蚀坑,且其在低冲击压力下表现出较好的耐磨性能;在搅拌磨损中,NM400耐磨钢的磨损主要是微切削产生的犁沟。
Taking the wear-resistant steel plate of NM400 as the research object, the wear mode of the NM400 wear-resistant steel plate under the actual working condition was simulated experimentally, and the wear resistance mechanism of the tested material under the erosion wear and the agitation wear was studied with the analysis of weight loss and wear surface observation. The results show that the microstructure of the test steel is mainly lath martensite and carbide particles distributed on the lath. In high-angle erosion wear, the wear of NM400 wear-resistant steel is mainly the erosion pit caused by plastic deformation It shows better wear resistance under low impact pressure. During the agitating wear, the wear of NM400 wear-resistant steel is mainly furrow generated by micro-cutting.