Abstract:The Gleason 537 pulsating quench press from United States was used to reduce gear heat distortion. By analyzing processing parameters, the hardenability of gear steel, press film design and manufacturing precision, structure of the quench press, hardening phases, and other controlling factors for distortion, the driven spiral bevel wheel technology test program was improved. Gear quenching distortion was effectively controlled and calibrated, the overall process quality was improved.