摘要
对涡轮轴感应淬火表面裂纹进行了分析,通过工艺试验优化了感应淬火工艺参数。结果表明,预处理后存在上贝氏体及组织不均匀是导致涡轮轴感应淬火开裂的主要原因。采用降低加热功率、延长加热时间的中频淬火工艺来降低加热速度,能有效避免淬火开裂。
The surface cracking of the turbine shaft after induction hardening was analyzed. The induction hardening process parameters were optimized by means of process experiments. The results show that upper bainite existing after pretreatment and non-homogeneous microstructure are the main reasons causing the cracking. The quenching cracking may be avoided effectively by reducing heating power and prolonging heating time for the medium-frequency quenching process to decrease heating rate.
出处
《金属热处理》
CAS
CSCD
北大核心
2008年第7期93-95,共3页
Heat Treatment of Metals
关键词
涡轮轴
感应淬火
开裂分析
工艺改进
turbine shaft
induction hardening
crack analysis
process improvement
