金属热处理 ›› 2020, Vol. 45 ›› Issue (12): 119-122.DOI: 10.13251/j.issn.0254-6051.2020.12.023

• 工艺研究 • 上一篇    下一篇

PH13-8Mo钢的离子渗氮工艺

张毅1, 孟璇1, 朱志强2, 赵志鹏1, 仝威1, 武瑞刚1, 王锦1   

  1. 1.山西航天清华装备有限责任公司, 山西 长治 046012;
    2.火箭军装备部驻长治地区军事代表室, 山西 长治 046012
  • 收稿日期:2020-07-04 出版日期:2020-12-25 发布日期:2021-01-14
  • 作者简介:张 毅(1989—),男,工程师,硕士,主要研究方向为金属材料表面改性等,E-mail:404324011@qq.com

Ion nitriding process of PH13-8Mo steel

Zhang Yi1, Meng Xuan1, Zhu Zhiqiang2, Zhao Zhipeng1, Tong Wei1, Wu Ruigang1, Wang Jin1   

  1. 1. Shanxi Aerospace Qinghua Equipment Co., Ltd., Changzhi Shanxi 046012, China;
    2. Military Representative Office of PLA Equipment Department in Changzhi Area, Changzhi Shanxi 046012, China
  • Received:2020-07-04 Online:2020-12-25 Published:2021-01-14

摘要: 对PH13-8Mo钢离子渗氮工艺参数进行了研究,其中包括渗氮温度、渗氮时间及渗氮件表面粗糙度。结果表明:随渗氮温度的升高、渗氮时间的延长、零件表面粗糙度的降低,PH13-8Mo钢渗氮层厚度增加;渗氮零件表面粗糙度对渗氮层脆性等级影响较大,渗氮零件表面粗糙度为6.3 μm时,其脆性等级达到III级;渗氮时间、渗氮温度及零件表面粗糙度对渗氮层硬度影响甚微。渗氮温度540 ℃,渗氮时间22 h,零件表面粗糙度0.8 μm时,PH13-8Mo钢可获得良好的渗氮层,渗氮层厚度可达197.5 μm,渗氮层硬度可达1083 HV0.2,脆性等级为II级。

关键词: PH13-8Mo钢, 渗氮工艺, 粗糙度, 渗氮层厚度, 渗氮层硬度, 脆性等级

Abstract: Plasma nitriding process parameters of PH13-8Mo steel were studied, including nitriding temperature, nitriding time and surface roughness of parts. The results show that with the increase of nitriding temperature, nitriding time and the decrease of surface roughness, the nitrided layer thickness of the PH13-8Mo steel increases. The surface roughness of parts has great influence on the brittleness grade of nitrided layer, when the surface roughness of parts is 6.3 μm, the brittleness grade reaches grade III. Nitriding time, nitriding temperature and surface roughness have little effect on the hardness of nitrided layer. When the nitriding temperature is 540 ℃, the nitriding time is 22 h, and the surface roughness of parts is 0.8 μm, the nitrided layer thickness can reach 197.5 μm, the nitrided layer hardness can reach 1083 HV0.2, and the brittleness grade is grade II.

Key words: PH13-8Mo steel, nitriding process, roughness, thickness of nitrided layer, hardness of nitrided layer, brittleness grade

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