Abstract��The chemical composition�� hardness testing and metallurgical structure observation of the[M42]gear hob was investigated to analyze and discuss the influencing factors causing the performance defects. The result showed that the main reason influencing the use property of gear hob was the over high quenching heating temperature�� which caused the overheating and partial overburning of structures.
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��ȫ�£����껣��ο���. M42���ֹ���ʧЧ����[J]. �й������ڿ���, 2016, 34(1): 7-9.
ZHANG Quan-xin��XU Hong-hao��HE Kai-wen. Failure analysis of M42 gear hob. Chinese Journal of Iron and Steel, 2016, 34(1): 7-9.
2016, Vol. 34 
