摘要
以20CrMnTiH钢制作的工程机械用螺旋伞齿轮为例,对其进行热处理后发现部分齿轮齿顶存在不规则的掉肉缺陷.通过采用宏观观察、化学成分分析、硬度测试、金相检验、扫描电镜和能谱分析等方法对缺陷产生的原因进行分析,结果表明,齿轮掉肉缺陷为回火后周转过程中异金属磕碰所致.
Abstract
Taking the spiral bevel gear used in construction machinery made of 20CrMnTiH steel as an example,after heat treatment,it was found that some gear tooth tips had irregular flesh loss defects.By using methods such as macroscopic observation,chemical composition analysis,hardness testing,metallographic examination,scanning electron microscopy,and energy spectrum analysis,the causes of defects were analyzed.The results showed that the gear shedding defect was caused by the collision of different metals during the turnover process after tempering.
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