风机齿轮轴轮齿断裂原因分析  

Fracture cause analysis of the gear teeth on gear shaft of aerogenerator

作　　者：谢金鹏[1] 王天华 杨春[1] 司红[1] 钟振前[1] 

机构地区：[1]钢铁研究总院失效分析中心,北京100081 [2]钢研纳克检测技术有限公司,北京100081

出　　处：《物理测试》2017年第6期43-46,共4页Physics Examination and Testing

摘　　要：某公司风电机组(2 000 kW)投产运行3年后,齿轮箱中间级小齿轮开裂,对该齿轮轴材料的力学性能、金相组织和断口形貌进行了分析,确定了轮齿断裂原因。结果表明,轮齿次表层位置存在较大尺寸的非金属夹杂物是导致轮齿疲劳开裂的主要原因。The gear teeth on a gear shaft in a 2 000 k W aerogenerator has cracked after service for three years. Mechanical properties,microstructure and fracture morphology of the fractured gear teeth were analyzed to determine the fracture reason. The result showed that there were large size nonmetallic inclusions in the gear teeth,which resulted in the fatigue crack of the gear teeth.

关 键 词：齿轮轴 疲劳断裂 非金属夹杂物 

分 类 号：TG115[金属学及工艺—物理冶金] TM315[金属学及工艺—金属学]