This paper studied the large circular welding parts surface induction quenching technology for 30CrMnSiA steel,by analyzing the process,quenching temperature,quenching media,quenching method and manufacturing characteristic of inductor.Based on the correlative experiment,process parameters of the large circular welding parts surface induction quenching for 30CrMnSiA steel was obtained.%针对30CrMnSiA 钢大型环形焊接件表面感应淬火工艺技术展开研究，分析了工艺流程、淬火温度、淬火介质、淬火方式以及感应器的制造特点，在相关试验的基础上获得了30CrMnSiA 钢大型环形焊接件表面感应淬火的工艺参数。
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