倾斜基体对激光熔覆能量分布的影响研究  

Study on the Influence of the Inclined Substrate to the Energy Distribution of Laser Cladding

作　　者：李海波[1] 李涛[1] 王鑫林 徐海岩[1] 张洪潮[1] Li Haibo Li Tao Wang Xinlin Xu Haiyan Zhang Hongchao(Dalian University of Technology, Dalian, Liaoning 116024, China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《应用激光》2017年第3期333-339,共7页Applied Laser

基　　金：国家重点基础研究发展计划(973)资助项目(项目编号:2011CB013400)

摘　　要：为了探究倾斜基体激光熔覆中基体表面能量的分布规律,利用米氏散射理论法建立了倾斜基体表面上的激光功率密度分布的数学模型,以及激光功率密度峰值和峰值偏移量的数学模型。结果表明,随着倾斜角度的增加,激光功率密度会逐渐减小,并且减小幅度逐渐增大;激光功率密度峰值会发生偏移,偏移量也随着倾斜角度的增加而增加,且幅度逐渐增大。用试验对模拟结果进行验证,获得的规律是一致的。In order to explore the distribution of the energy of the inclined substrate surface during the laser cladding process,this paper established the mathematical model of the effective laser power density distribution,the effective laser power density peak and the peak offset,by using Mie scatting theory method.The results show that with the increase of the inclination angle,the effective power density decreases gradually,while the amplitude increases gradually.The peak shift amount of the effective power density increases with the increase of the inclination angle,so as the amplitude.The simulation results are verified by experiments,and consistent rules are obtained.

关 键 词：激光熔覆 倾斜基体 激光功率密度分布 米氏散射理论 

分 类 号：TG146.4[一般工业技术—材料科学与工程]