重载渗碳硬化齿轮,有时会在表层下产生深层剥落,这是一种特殊的失效型式,对齿轮运行是一种严重危害。如何判定产生深层剥落就成为人们共同关心的一个问题。本文根据弹性理论,从次表层接触应力场的分析入手,通过疲劳强度条件建立等效应力判据,进而导出了预测深层剥落强度的计算公式和电算图表。 Heavy-duty carburized hardened gears sometimes cause deep peeling beneath the surface, a special form of failure that is a serious hazard to gear operation. How to determine the occurrence of deep peeling has become a common concern of people. Based on the analysis of the subsurface contact stress field, based on the elastic theory, the equivalent stress criterion is established based on the fatigue strength condition, and then the formulas and calculation charts for predicting the deep spalling strength are derived.