金属热处理 ›› 2025, Vol. 50 ›› Issue (1): 325-331.DOI: 10.13251/j.issn.0254-6051.2025.01.049

• 表面工程 • 上一篇    下一篇

空心阴极离子源氮碳共渗改性H13钢的摩擦性能

廖永发1, 尚勇1, 李杨2, 刘仲礼2, 姜明全2, 周泽龙2, 高越2   

  1. 1.中铁工程装备集团有限公司, 河南 郑州 450016;
    2.烟台大学 核装备与核工程学院, 山东 烟台 264005
  • 收稿日期:2024-07-15 修回日期:2024-10-25 出版日期:2025-01-25 发布日期:2025-03-12
  • 通讯作者: 李 杨,教授,博士,E-mail:metalytu@163.com
  • 作者简介:廖永发(1984—),男,高级工程师,主要研究方向为隧道专用设备的结构设计,E-mail:liaoyongfa840129@163.com。
  • 基金资助:
    国家自然科学基金(52175192)

Friction properties of H13 steel nitrocarburizing-modified by hollow cathode plasma source

Liao Yongfa1, Shang Yong1, Li Yang2, Liu Zhongli2, Jiang Mingquan2, Zhou Zelong2, Gao Yue2   

  1. 1. China Railway Engineering Equipment Co., Ltd., Zhengzhou Henan 450016, China;
    2. School of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai Shandong 264005, China
  • Received:2024-07-15 Revised:2024-10-25 Online:2025-01-25 Published:2025-03-12

摘要: 为提高H13钢的硬度以及耐磨性,采用空心阴极离子放电氮碳共渗(520、530和540 ℃,5 h)的方法对淬火回火态H13钢进行表面处理,分析了经氮碳共渗后试样的微观组织、硬度与摩擦磨损性能。结果表明,经氮碳共渗后H13钢表面形成了铁氮化合物扩渗层,硬度与耐磨性有显著提升。其中530 ℃氮碳共渗后试样的表面硬度最高,为999.3 HV0.1,相比淬火回火态试样提升120%,由硬度梯度得出其硬化层深度约为175 μm。油润滑条件下的摩擦磨损测试表明,540 ℃氮碳共渗后的磨损量相比淬火回火态下降83%。

关键词: 空心阴极, 氮碳共渗, H13模具钢, 摩擦磨损

Abstract: To improve the hardness and wear resistance of H13 steel, surface treatment of H13 steel was carried out by hollow cathode ion discharge nitrocarburizing (520, 530 and 540 ℃ for 5 h), and the microstructure, hardness and friction and wear properties of the H13 after nitrocarburizing were analyzed. The results show that an iron-nitride compound diffusion layer is formed on the surface of the H13 steel after nitrocarburizing, which results in significantly improvement of the hardness and wear resistance. The surface hardness of the specimen after nitrocarburizing at 530 ℃ is the highest, which is 999.3 HV0.1, 120% higher than that of the specimen after quenching and tempering, and the depth of the hardening layer is about 175 μm based on the measurement of hardness gradient. The friction and wear test under oil lubrication condition shows that the wear volume of the specimen after nitrocarburizing at 540 ℃ is 83% lower than that of the specimen after quenching and tempering.

Key words: hollow cathode, nitrocarburizing, H13 mold steel, friction and wear

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