42CrMo钢减速器齿轴断裂分析及组织调控
Fracture Analyses and Microstructure Control of Reducer Gear Shaft of 42CrMo Steel
王巧云1, 白俊兰2
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作者单位：1. 西安航空技术高等专科学校, 陕西 西安 710077; 2. 西安交大 思源科技股份有限公司, 陕西 西安 710049
中文关键字：42CrMo钢； 齿轴； 金相组织； 热处理工艺
英文关键字：42CrMo steel; gear shaft; microstructure; heat treatment process
中文摘要：对42CrMo钢减速器齿轴的断口进行分析，对齿轴硬度进行检测并对其金相组织进行了分析。 结果表明，齿轴的金相组织未达到要求造成硬度不足，从而使齿轴发生剪切断裂。根据齿轴的技术要求制定出合理的热处理参数。
英文摘要：The fracture of 42CrMo steel reducer gear shaft was analyzed. The hardness of reducer gear shaft was tested and its microstructure was analyzed. The results show that the microstructure can't reach the requirements, which causes inadequate hardness of gear shaft, and thus it results in the shear failure of gear shaft. According to the technical requirement, the reasonable heat treatment process for gear shaft was determined.