Distortions and Residual Stresses of Gears Caused by Hardening : 5th Report, Gear with Limited Face Width

抄録

Gears made of two kinds of materials and with limited face width were quenched. In an experiment of gears made of S45C an increase of tip cylinder diameter after through-hardening, was observed with a reduction of face width. Contrariwise gears made of SCM21 showed a reduction of tip cylinder diameter after case-hardening. From those results it is clear that gear deformation after the hardening process depends on the material and dimensions of gear. Moreover this study shows a theoretical calculation method for the temperature and deformation distribution in a cylinder with limited length during the quenching process. The calculated results show good coincidence with the experimental results obtained for the test gears and the equivalent cylinder test pieces.