The influence of case depth on the pitting and bending strength of case carburized gears was investigated. For this purpose an extensive test program on gears of different sizes, different gear geometry and with systematically varied case depth has been carried out. Residual stresses and further characteristics of the case hardened layer - that are influenced by the value of case depth as well - are examined. Based on the test results, rating formulas are derived to calculate the optimum case depth for maximum load capacity. Influence factors are defined, by which the influence of case depth on the load capacity regarding pitting and bending strength can be taken into consideration if rating a gear according to the standardized calculation method of DIN 3990/ISO 6336.
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机译：研究了表面深度对渗碳齿轮的点蚀和弯曲强度的影响。为了这个目的，已经对不同尺寸，不同齿轮几何形状以及系统深度变化的齿轮进行了广泛的测试程序。检查表面硬化层的残余应力和其他特性-同样受表面深度值影响。根据测试结果，得出额定公式，以计算出最大负载能力下的最佳壳体深度。定义了影响因素，如果根据DIN 3990 / ISO 6336的标准化计算方法对齿轮进行评级，则可以考虑壳体深度对点蚀强度和抗弯强度的影响。
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