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175μm。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%。
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.
作者
廖永发
尚勇
李杨
刘仲礼
姜明全
周泽龙
高越
Liao Yongfa;Shang Yong;Li Yang;Liu Zhongli;Jiang Mingquan;Zhou Zelong;Gao Yue(China Railway Engineering Equipment Co.,Ltd.,Zhengzhou Henan 450016,China;School of Nuclear Equipment and Nuclear Engineering,Yantai University,Yantai Shandong 264005,China)
出处
《金属热处理》
北大核心
2025年第1期325-331,共7页
Heat Treatment of Metals
基金
国家自然科学基金(52175192)。
关键词
空心阴极
氮碳共渗
H13模具钢
摩擦磨损
hollow cathode
nitrocarburizing
H13 mold steel
friction and wear
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;通信作者:李杨,教授,博士,E-mail:metalytu@163.com。
