On the Pitting of Power Transmitting Helical Gears : 2nd Report, The Effect of the Component Materials

Abstract

There have already been made many studies on the component materials of power transmitting gears in relation to their pitting effect, and the effects of component on the pitting have been made clear. However, it seems that there are few examples of comparative studies into details of the fatigue phenomena including crack, work hardening and plastic flow. In the first report the authors tried the minute examinations of the pittings of large type helical gears made of Cr-Mo steel (SCM-1). In this report, the authors performed the same experiments on the helical gears of carbon steel (S45C) and made clear the differences in each characteristic pitting of both materials.