14-11-2014, 02:43 PM
Abstracts: Heat treatment could create local or global distortion on work piece. Finishing operations, often costly, are then necessary to respect the required functional tolerances. An automotive component (Spur gear) made from low alloy structural steel was volume hardening or age hardening followed by oil quenching. After volume hardening the gear was become so harden, to achieve desired properties of spur gear, it was tempered in tempering furnace. The problem was found after heat treatment in the keyway of gear. The aim of our project to reduce distortion in keyway of gear by changing its methoding, dimensions of casting and variations of heat treatment cycle.