减速机轴断裂分析  

Fracture Analysis of Reductor Shaft

作　　者：温娟[1] 尹立新[1] 严春莲[1] 刘晓岚[1] 

机构地区：[1]首钢技术研究院理化检测中心,北京100041

出　　处：《物理测试》2008年第1期48-51,共4页Physics Examination and Testing

摘　　要：减速机轴在使用不到一周发生断裂。这里对断轴的宏观形貌、金相和扫描电镜的微观组织、夹杂物及化学成分进行了检测。结果发现断轴组织内部存在焊接裂纹、夹渣及块状夹杂物等缺陷,这些缺陷形成微小裂纹源,使减速机轴在弯曲旋转作用力下发生疲劳断裂。The reductor shaft were fractured after running for not more than one week. By means of macrostructure, microstructure, SEM, inclusion inspection and chemical analysis, the cracked reductors shaft were investigated. The results showed that the main reasons of reductor shaft fracture are weld cracks, slag inclusions and massive inclusions which exist in the structure of the reductor shaft.

关 键 词：减速机轴 焊接缺陷 夹杂物 

分 类 号：TG115.2[金属学及工艺—物理冶金]