Heat Treatment of Metals ›› 2020, Vol. 45 ›› Issue (12): 128-131.DOI: 10.13251/j.issn.0254-6051.2020.12.025

• PROCESS RESEARCH • Previous Articles     Next Articles

Heat treatment process improvement of pneumatic clutch wheel hub

Sun Guojin1,2, Hou Miaoyu2, Gao Jiawu3, Ren Tai'an1, Gao Daoxu2   

  1. 1. School of Materials Science and Enginerring, Henan Institute of Technology, Xinxiang Henan 453003, China;
    2. Henan Dalin Rubber and Telecommunications Apparatus Co., Ltd., Xinxiang Henan 453600, China;
    3. Henan Jingcheng Auto Parts Co., Ltd., Xinxiang Henan 453000, China
  • Received:2020-08-24 Online:2020-12-25 Published:2021-01-14

Abstract: Taken GCr15SiMn steel pneumatic clutch wheel hub as a object, the original quenching and tempering process was optimized in order to reduce the heat treatment distortion. The results show that the distortion of the hub is significantly reduced by adding stress relief annealing and cryogenic treatment processes, which meets the technical requirements of dimension, and the surface hardness distribution of the hub is more uniform.

Key words: pneumatic clutch wheel hub, heat treatment, process optimization, distortion, hardness

CLC Number: