车用铝合金薄板激光深熔焊工艺参数研究  

Research on laser deep penetration welding process parameters of automotive aluminum alloy sheet

作　　者：王健强[1] 赵而远 李家曙 邢健 WANG Jianqiang;ZHAO Eryuan;LI Jiashu;XING Jian(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2023年第6期727-731,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家重点研发计划资助项目(2018YFB0104603);合肥工业大学产学研校企合作资助项目(J2020K03)。

摘　　要：文章采用正交试验法,在不同工艺参数下对厚度为1.5 mm的S600铝合金进行激光深熔焊试验。结果表明:激光功率、焊接速度、激光光束线性摆动频率对焊缝成形、焊接质量均有较大影响,激光功率增加有利于熔深和深宽比的增加,随着焊接速度和线性摆动频率的增加,熔深和深宽比减小;相较于正交试验中的最优参数组,选取的优化工艺参数(焊接功率3250 W、焊接速度80 mm/s、激光光束线性摆动频率80 Hz)使拉力性能提升了8.32%。该文研究结果可为汽车轻量化全铝车身连接中的激光焊接提供一定的参考。In this paper,the experiment of laser deep penetration welding of S600 aluminum alloy with thickness of 1.5 mm was carried out under different process parameters by orthogonal test method.The experimental results show that laser power,welding speed and laser beam linear oscillation frequency all have great influence on weld forming and welding quality.The increase of laser power is beneficial to the increase of welding depth and aspect ratio.With the increase of welding speed and linear oscillation frequency,the welding depth and aspect ratio decrease.The welding power of 3250 W,welding speed of 80 mm/s and laser beam linear oscillation frequency of 80 Hz were selected as the optimization results of the process parameters.Compared with the optimal parameter group in the orthogonal test,the tensile performance was improved by 8.32%.The research results can provide reference for laser welding of lightweight all-aluminum automobile body connection.

关 键 词：激光焊接 铝合金 正交试验 汽车轻量化 

分 类 号：TG456.7[金属学及工艺—焊接]