Effects of Carburized Part, Helix Angle and Face Width on Residual Stresses of Case-Hardened Helical Gears

Abstract

This paper presents a study on effects of carburized part, helix angle and face width on residual stresses of case-hardened helical gears. A heat conduction analysis and an elastic-plastic stress analysis during the case-hardening process of helical gears were carried out for various case-hardening conditions by the three-dimensional finite-element method (3D-FEM), and then residual stresses were obtained. The effects of the case depth, the carburized part (tooth surface, gear-side), the helix angle, the face width on the residual stress were determined.