金属热处理 ›› 2023, Vol. 48 ›› Issue (4): 143-147.DOI: 10.13251/j.issn.0254-6051.2023.04.023

• 工艺研究 • 上一篇    下一篇

30CrMnSiA钢外齿摩擦片的工艺改进

周洪刚1, 刘克1, 熊明定1, 王鑫铭2, 余杰1, 左经纬1   

  1. 1.江麓机电集团有限公司, 湖南 湘潭 411100;
    2.湘潭大学 材料科学与工程学院, 湖南 湘潭 411105
  • 收稿日期:2022-09-23 修回日期:2022-12-21 发布日期:2023-05-27
  • 通讯作者: 刘 克,正高级工程师,E-mail:149008871@qq.com
  • 作者简介:周洪刚(1975—),男,正高级工程师,主要研究方向为特种车辆及综合传动装置的零部件加工技术,E-mail:18873270001@139.com。

Process modification of 30CrMnSiA steel external gear friction disc

Zhou Honggang1, Liu Ke1, Xiong Mingding1, Wang Xinming2, Yu Jie1, Zuo Jingwei1   

  1. 1. Jianglu Machinery & Electronics Group Co., Ltd., Xiangtan Hunan 411100, China;
    2. School of Materials Science and Engineering, Xiangtan University, Xiangtan Hunan 411105, China
  • Received:2022-09-23 Revised:2022-12-21 Published:2023-05-27

摘要: 为实现30CrMnSiA钢外齿摩擦片的大批量生产,解决其单件生产工序繁琐、生产效率低及生产成本高等问题,对热轧板进行工艺试验研究。得出最优的生产工艺为(735±3) ℃×(13~15) h球化退火+冷轧+精冲+860 ℃×60 min油淬+380 ℃×60 min预回火+550 ℃模压碟形回火+氧化处理,其中模压碟形回火宜采用增加中间层的改进模具,可实现较高的装炉数量(60件/模)和100%的产品合格率,所得摩擦片的显微组织为回火索氏体,晶粒度为8.5级。小批量生产的10套摩擦片均通过考核验证且无异常,性能满足要求。

关键词: 摩擦片, 碟形, 精冲, 热成形

Abstract: In order to realize the mass production of 30CrMnSiA steel external gear friction plate and solve the problem of single piece production process such as tedious process, low production efficiency and high cost, the process test of hot-rolled plate was studied. The optimal production process is obtained, which consists of spheroidizing annealing at (735 ± 3) ℃ for 13-15 h, cold rolling, fine blanking, austenitizing at 860 ℃ for 60 min and oil quenching, and then pre-tempering at 380 ℃ for 60 min, molded disc tempering at 550 ℃ and oxidation treatment. In addition, using the improved hot forming die with increasing intermediate layer for the molded disc tempering can achieve a higher charging number (60 pieces per mold) and 100% product qualification rate. The microstructure of the obtained friction plate is tempered martensite, and the grain size is 8.5 grade. Furthermore, the 10 sets of gear friction disc produced in small batch pass the examination and are normal, and the properties meet the requirements.

Key words: friction plate, disking, fine blanking, hot-forming

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