Qualities of Hot-Rolled Gears

Abstract

The author investigated the metal structure, bending strength, and the deformation caused by heat treatment of hot-rolled gears. The results reveal that the fibrous structure of material lies along the tooth form, and the crystal structure is of minute structure. The results of the bending test show that the hot-rolled gear is apparently stronger than the cut gear in the impact bending strength and almost equal or slightly stronger in the static bending strength. The deformation of hot-rolled gears as a whole and of their tooth form, when hardening, is made clear by the experimental results.