基于MSC.Marc软件的电磁感应复合激光淬火相变研究  

Phase Transformation Process of Electromagnetic Induction Assisted Laser Quenching Based on MSC.Marc Software

作　　者：张群莉 林坚[1,2,3] 陈智君 唐泽浩 黄华[1,2,3] 高元安 姚建华 Zhang Qunli;Lin Jian;Chen Zhijun;Tang Zehao;Huang Hua;Gao Yuan’an;Yao Jianhua(Institnte of Laser Advanced Marufacturing,Zhejiang University of Technology,Hangzhou,Zhejiang 310023,China;Zhejiang Provincial Cllaborative Innovation Center of High-End Laser Manfacturing Equipment,Hangzhou,Zhejiang 310023,China;College of Mechanical Engineerng,Zhejiang University of Techmology,Hangzhou,Zhejiang 310023,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang,Henan 471039,China)

机构地区：[1]浙江工业大学激光先进制造研究院,浙江杭州310023 [2]浙江省高端激光制造装备协同创新中心,浙江杭州310023 [3]浙江工业大学机械工程学院,浙江杭州310023 [4]洛阳轴承研究所有限公司,河南洛阳471039

出　　处：《中国激光》2021年第11期78-89,共12页Chinese Journal of Lasers

基　　金：国家重点研发计划(2018YFB0407301);国家自然科学基金(52035014);浙江省属高校基本科研业务费项目(RF-C2019003)。

摘　　要：通过电磁感应器加热耦合,提高了42CrMo钢在激光淬火后淬硬层的深度和均匀性。利用MSC.Marc软件对42CrMo钢电磁感应复合激光淬火过程的温度场演变和相变过程进行研究。通过实测温度和淬火后淬硬层的深度,对数值模型进行验证,结果表明模型准确度高。采用数值模型指导工艺实验,在优化工艺下电磁感应复合激光淬硬层深度达5.9 mm。通过电磁感应复合激光淬火,工件表层更深处的组织达到奥氏体化温度,扩大了马氏体相变区域,显著提高了淬硬层的深度和均匀性,突破了单一激光淬火淬硬层深度较浅的局限性。Objective Heavy load bearing is an essential part of heavy load mechanical equipment,which plays the role of supporting a rotating body.Wind power bearing in wind power generation equipment is a typical heavy load bearing.To obtain wind power bearing with excellent comprehensive performance and high service life as well as maintain the stability of wind turbine,higher requirements are put forward for the depth and uniformity of hardened layer of main shaft bearing raceway.In this study,the depth and uniformity of the hardened layer of a workpiece after laser quenching are improved by adding electromagnetic induction auxiliary heating,and the heating and cooling rates are adjusted to transfer more heat to the depth of the material,so as to achieve deeper hardened layer.In the quenching process,the dual heat sources interact.Therefore,it is necessary to investigate the phase transformation process of electromagnetic induction-assisted laser quenching.This research will provide a reference for high-quality deep strengthening of high-end equipment parts under heavy load conditions.Methods The MSC.Marc software is employed to establish the physical models of hybrid quenching and laser quenching processes,and the meshes in different areas of the models are densified in different degrees.Because the temperature of the workpiece changes markedly during quenching,the thermophysical parameters of the material at different temperatures are considered in the models.In addition,the initial and boundary conditions of the models are set according to the working conditions.The accuracy of the model is verified by the temperature curve of the characteristic points and morphology of the hardened layer.In the verified model,the evolution of the temperature field,phase transformation process,and uniformity of the hardened layer in the dual heat source hybrid quenching process are studied.Results and Discussions The average relative error between the measured and simulated temperature curves is less than 15%(Fig.8).Under the forced c

关 键 词：激光技术 激光淬火 电磁感应 42CRMO钢 数值模拟 温度场 相变 

分 类 号：O436[机械工程—光学工程]