金属热处理 ›› 2022, Vol. 47 ›› Issue (6): 143-147.DOI: 10.13251/j.issn.0254-6051.2022.06.028

• 工艺研究 • 上一篇    下一篇

真空低压渗碳热处理在重载齿轮上的应用

朱鹏凯1, 徐燊1, 陈旭阳2, 张晓田1, 李阳1   

  1. 1.陕西法士特汽车传动集团有限责任公司, 陕西 西安 710119;
    2.北京机电研究所有限公司, 北京 100083
  • 收稿日期:2022-02-01 修回日期:2022-05-02 出版日期:2022-06-25 发布日期:2022-07-05
  • 作者简介:朱鹏凯(1993—),男,工程师,硕士,主要研究方向为齿轮热处理及表面处理,E-mail:pkzhu_nwpu@163.com
  • 基金资助:
    国家重点研发计划(2018YFB2001904)

Application of vacuum low pressure carburizing heat treatment on heavy duty gears

Zhu Pengkai1, Xu Shen1, Chen Xuyang2, Zhang Xiaotian1, Li Yang1   

  1. 1. Shaanxi Fast Auto Drive Group Co., Ltd., Xi'an Shaanxi 710119, China;
    2. Beijing Research Institute of Mechanical and Electrical Technology Co., Ltd., Beijing 100083, China
  • Received:2022-02-01 Revised:2022-05-02 Online:2022-06-25 Published:2022-07-05

摘要: 研究了20CrMnTiH钢同步器齿毂经真空低压渗碳热处理后组织和性能的变化,并与气氛渗碳热处理工艺进行对比。结果表明,真空渗碳热处理后齿面位置处几乎无晶间氧化和非马氏体组织,在晶间氧化的控制上较大幅度优于气氛渗碳热处理工艺;高压气淬在齿毂类零件的热处理畸变控制方面优于油液淬火。

关键词: 20CrMnTiH钢, 真空渗碳, 组织, 性能

Abstract: The changes of microstructure and properties of 20CrMnTiH steel synchronizer gear hub after vacuum low pressure carburizing heat treatment were studied and compared with that by atmosphere carburizing heat treatment process. The results show that there is almost no intergranular oxidation and non-martensitic structure after vacuum carburizing heat treatment, and the control of intergranular oxidation is much better than that of atmosphere carburizing heat treatment. High pressure gas quenching is superior to oil quenching in heat treatment distortion control of the gear hub.

Key words: 20CrMnTiH steel, vacuum carburizing, microstructure, performance

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