H13钢激光淬火工艺优化及组织性能  

Laser quenching process optimization and microstructure and properties of H13 steel

作　　者：马欣 史强 陈雁忠[1,2] 李强 张月婷 赵龙[1] Ma Xin;Shi Qiang;Chen Yanzhong;Li Qiang;Zhang Yueting;Zhao Long(College of Mechanical and Electrical Engineering,Xinjiang Institute Engineering,Urumqi Xinjiang 830000,China;Laser Intelligent Manufacturing and Remanufacturing Engineering Technology Research Center,Xinjiang Institute Engineering,Urumqi Xinjiang 830000,China)

机构地区：[1]新疆工程学院机电工程学院,新疆乌鲁木齐830000 [2]新疆工程学院激光智能制造与再制造工程技术研究中心,新疆乌鲁木齐830000

出　　处：《金属热处理》2023年第7期266-271,共6页Heat Treatment of Metals

基　　金：自治区自然科学基金青年基金(2022D01B130);自治区高校科研计划自然科学项目(XJEDU2019Y064)。

摘　　要：采用激光淬火对H13钢表面进行强化处理,通过正交试验中的极差分析进行淬火工艺优化,研究了最佳工艺参数下试样的硬度和摩擦磨损性能,并对激光淬火表面进行物相组成分析和显微组织观察。结果表明,最佳激光淬火工艺参数为激光功率600 W,扫描速度6 mm/s,搭接率为20%,该工艺下H13钢淬硬层的平均硬度为774 HV0.1,约为基体的3倍,淬硬层深度为0.87 mm,摩擦因数和磨损量约为0.367和0.0015 g,分别较基体下降了50%和60.5%。淬硬层主要为板条状和针状的混合马氏体,还有残留奥氏体和少量渗碳体。Surface of H13 steel was strengthened by laser quenching,and the quenching process was optimized by range analysis of orthogonal test.The microhardness and friction and wear properties of the specimen under the optimum process parameters were studied,and the phase composition and microstructure of the laser quenching surface were analyzed.The results show that the optimum laser quenching process parameters are laser power of 600 W,scanning speed of 6 mm/s and lapping rate of 20%.Under this optimum process,the average hardness of hardened layer of the H13 steel is 774 HV0.1,which is about 3 times than that of the matrix,the depth of the hardened layer is 0.87 mm,and the friction coefficient and wear amount are about 0.367 and 0.0015 g,which are 50% and 60.5% lower than those of the matrix,respectively.The hardened layer is mainly composed of lath and acicular mixed martensite,retained austenite and a small amount of cementite.

关 键 词：H13模具钢 激光淬火 显微硬度 组织结构 摩擦磨损 

分 类 号：TG178[金属学及工艺—金属表面处理]