Sintered materials have been widely used in various industrial fields because of their higher performance properties and lower production costs. However, it has been still difficult to employ sintered material for high strength parts such as transmission gears of vehicle. Since many pores remain in the sintered body, resulted in lower fatigue strength. In this paper, rolling process is applied to sintered SCM415 gear to overcome this issue. Tooth surface on the sintered gear was densified by the rolling process. The surface area is the most critical parts of the gear, so that fatigue strength of the gear could be improved by the densification. As a result of the densification process, higher fatigue strength as same as that of wrought material was obtained.
|Translated title of the contribution||S0410202 Effect of Form Rolling on the Improvement of Tooth Root Bending Fatigue Strength for Sintered SCM415 Gears|
|Publication status||Published - 2014|