金属热处理 ›› 2025, Vol. 50 ›› Issue (9): 228-232.DOI: 10.13251/j.issn.0254-6051.2025.09.036

• 工艺研究 • 上一篇    下一篇

QPQ盐浴复合处理对5CrMnMo热锻模具钢组织与性能的影响

谢明强, 魏珏, 汪辉, 文灿, 王强, 甘倩容, 代燕芹, 陈玻   

  1. 成都工具研究所有限公司, 四川 成都 610051
  • 收稿日期:2025-04-16 修回日期:2025-07-12 出版日期:2025-09-25 发布日期:2025-10-13
  • 作者简介:谢明强(1981—),男,高级工程师,博士研究生,主要研究方向为金属材料工程,E-mail: xiemingqiang11@163.com。

Effect of QPQ salt bath composite treatment on microstructure and properties of 5CrMnMo hot forging die steel

Xie Mingqiang, Wei Jue, Wang Hui, Wen Can, Wang Qiang, Gan Qianrong, Dai Yanqin, Chen Bo   

  1. Chengdu Tool Research Institute Co., Ltd., Chengdu Sichuan 610051, China
  • Received:2025-04-16 Revised:2025-07-12 Online:2025-09-25 Published:2025-10-13

摘要: 为提高5CrMnMo热锻模具钢的热疲劳性能,采用不同时间560 ℃渗氮的QPQ盐浴复合处理技术,研究QPQ盐浴复合处理工艺对5CrMnMo热锻模具钢组织与性能的影响。结果表明,采用QPQ盐浴复合处理技术对5CrMnMo热锻模具钢进行2.5~3.0 h的渗氮可得到一定厚度的有效渗氮层,最大幅度提高热锻模具的热疲劳性能、耐磨性和抗蚀性。

关键词: 5CrMnMo钢, 热锻模具钢, QPQ技术, 热疲劳, 耐磨性, 耐蚀性

Abstract: In order to enhance the thermal fatigue behavior of 5CrMnMo hot forging die steel, a QPQ salt bath composite treatment technology with varying nitriding time at 560 ℃ was utilized to investigate the effect of QPQ salt bath composite treatment process on the microstructure and properties of 5CrMnMo hot forging die steel. The results show that applying the QPQ salt bath composite treatment technology to 5CrMnMo hot forging die steel with nitriding time of 2.5-3.0 h can obtain an effective nitrided layer with certain thickness, which can greatly improve the thermal fatigue behavior, wear resistance and corrosion resistance of hot forging dies.

Key words: 5CrMnMo steel, hot forging die steel, QPQ technology, thermal fatigue, wear resistance, corrosion resistance

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