金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 245-249.DOI: 10.13251/j.issn.0254-6051.2023.11.040

• 工艺研究 • 上一篇    下一篇

42CrMo钢齿圈的锻后热处理工艺

陈永祥, 李勇, 王涛, 杨刚, 杨敏, 钟小梅   

  1. 重庆齿轮箱有限责任公司, 重庆 402260
  • 收稿日期:2023-06-30 修回日期:2023-10-07 出版日期:2023-11-25 发布日期:2023-12-27
  • 作者简介:陈永祥(1973—),男,高级工程师,主要研究方向为热处理技术、大型硬齿面齿轮冷热加工技术,E-mail:cyxcyx1973@163.com
  • 基金资助:
    中国船舶集团有限公司自立科研项目(202126K)

Heat treatment processes of 42CrMo steel gear ring after forging

Chen Yongxiang, Li Yong, Wang Tao, Yang Gang, Yang Min, Zhong Xiaomei   

  1. Chongqing Gearbox Co., Ltd., Chongqing 402260, China
  • Received:2023-06-30 Revised:2023-10-07 Online:2023-11-25 Published:2023-12-27

摘要: 42CrMo钢锻件齿圈在锻造后分别进行直接空冷、重新加热退火、锻造余热退火,并对3种不同锻后热处理状态下的锻件齿圈进行最终调质处理。对热处理态齿圈的组织、硬度进行表征分析,并对调质态齿圈的本体性能、组织进行试验分析。结果表明,3种不同锻后热处理的42CrMo钢锻件齿圈经调质处理后均能满足最终性能要求,但采用锻后余热退火+调质处理的本体显微组织更均匀,冲击性能和强度相匹配的综合性能表现更优,且锻后余热退火也是节能降耗和“降双碳”的绿色制造工艺。

关键词: 42CrMo钢, 锻后热处理, 调质, 显微组织, 力学性能

Abstract: Post-forging heat treatments (directly air-cooling, reheating annealing and forging waste-heat annealing after forging) were carried out for the 42CrMo steel forged gear rings, and then the gears under three different post-forging heat treatment conditions were finally quenched and tempered. The microstructure and hardness of the post-forging heat treated gear rings were characterized, and the body properties and microstructure of the quenched and tempered gear rings were tested and analyzed. The results show that the 42CrMo steel forging gear rings after three different post-forging heat treatments can meet the final property requirements after quenching and tempering. However, the microstructure of the body after the forging waste-heat annealing+quenching and tempering is more uniform, the comprehensive property matching of the impact property and strength is better, and the waste-heat annealing after forging is also a green manufacturing process for energy saving and consumption reduction, and coincides with the goals of carbon peaking and carbon neutrality.

Key words: 42CrMo steel, post-forging heat treatment, quenching and tempering, microstructure, mechanical properties

中图分类号: