【摘要】 用光学显微镜和扫描电镜对东方红履带拖拉机支重轮的磨损件进行了显微组织的观察和分析 ,对支重轮在工作过程中产生的挤压变形 (卷边 )现象进行了研究 ;在对支重轮进行受力分析后 ,得出结论 :支重轮的磨损机理以塑性变形为主 ,其失效主要是由于自身设计强度不足、表面硬度低所造成。更多还原

【Abstract】 The microstructure of worn supporting wheel in Dong Fang Hong track tractor is observed and analysed by means of photomicrography and SEM, and the phenomenon of squashed deformation (extrusion) of supporting wheels during working is investigated. With the stress computation on supporting wheels,the conclusions indicate that main reasons of frustration of supporting wheels are that they have not enough strength and surface hardness.更多还原