This paper analyzes the main reasons of quenching cracks in turnings of ZH110,and the measures of reventing intermediate frequency quenching cracks are put forwarded.

• 分析了转向节中频淬火产生裂纹的主要原因,提出了防止ZH110型汽车转向节中频淬火裂纹产生的一些具体措施。