减速机高速轴断裂失效分析
Analysis on Fracture Failure of High-speed Shaft for Reducer
周蕾玲1, 吴芳敏2, 吴海彤1
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作者单位:1. 马钢华阳设备诊断公司, 安徽 马鞍山 243011; 2. 马鞍山钢铁公司第一钢轧总厂, 安徽 马鞍山 243011
中文关键字:高速轴; 断裂; 魏氏体组织
英文关键字:high-speed shaft; fracture; widmanstatten structure
中文摘要:对减速机高速轴的断口宏观形貌、金相组织、化学成分、硬度等进行了观察和测试。结果表明,减速机高速轴未按制造图纸要求选用42CrMo钢,使用前也未按要求进行调质处理,原材料的组织缺陷以及键槽的设计位置不合理导致其发生早期断裂失效。
英文摘要:The macrograph and microstructure of high-speed shaft in reducer was observed. The chemical composition and hardness were measured. The results show that the raw materials and heat treatment of the high-speed shaft do not accord with the requirements; the structural defects of raw materials and the unreasonable position of keyway are also the reasons for fracture.