摘要
某增速齿轮箱的行星轮在热处理后发现开裂现象。为查找该行星轮开裂的原因,分别从裂纹形貌、裂纹走向、组织、硬度等方面进行了裂纹原因分析。结果表明:行星轮的开裂是产生于渗碳后的空冷过程中,并且当三要素同时具备时,零件空冷开裂的概率大增。
A planet gear of speed increasing gearbox cracked during heat treatment. To find the reason, analyses of crack shape, crack direction, microstructure, and hardness have been done. The results show: The cracks appear during air cooling after carburization and caused by three factors. When the three factors appear at the same time, probability of component to crack will increase obviously.
出处
《功能材料信息》
2015年第5期61-64,共4页
Functional Materials Information
关键词
行星轮
渗碳空冷
开裂
Planet gear
Air cooling after carburizing
Crack
