超声辅助激光连接金属与塑料试验分析  

Experimental study on ultrasonic-aided laser joining of metal and plastic

作　　者：陈玉娇 刘全军 CHEN Yujiao;LIU Quanjun(DongGuan University of Technology,DongGuan,532808;Guangzhou Hengmei Intelligent Technology Co.,Ltd.,GuangZhou,511466)

机构地区：[1]东莞理工学院,东莞532808 [2]广州恒美智能科技有限公司,广州511466

出　　处：《焊接学报》2022年第10期37-42,I0005,共7页Transactions of The China Welding Institution

基　　金：国家自然科学基金青年项目(52005105);粤莞区域联合基金青年基金项目(2020A1515111071)。

摘　　要：采用响应曲面设计方法 RSM (Response Surface Methodology)对超声辅助激光焊接钛和聚对苯二甲酸乙二酯(PET)的参数进行优化,主要研究了激光功率、超声振幅和间歇性超声作用时间对接头强度,气泡缺陷及焊接过渡层厚度的影响.并利用X射线光电子能谱仪(XPS)分析了超声波作用时间和振幅对连接界面有益化学键形成的影响.结果表明,激光功率、超声振幅和超声作用时间对焊接强度的影响规律是相同的,即在达到最大值之后,随着参数值的增加而减小.当激光功率为60 W时,超声波作用时间或超声波振幅的增大都会促进Ti-C键的生成,使焊接过渡层厚度增加.试验还表明,当激光功率小于65 W时,辅助超声波的引入可以引起气泡流动,有效减小气泡缺陷.This article uses RSM(Response Surface Methodology) to optimize the parameters of ultrasonic-assisted laser welding of titanium and polyethylene terephthalate(PET),and mainly studies the influence of laser power,ultrasonic amplitude and ultrasonic load time on joint strength,bubble defect and the thickness of welding transition layer.Using XPS(Xray photoelectron spectroscopy) to analyze the effect of ultrasonic load time and amplitude on the formation of beneficial chemical bonds at the interface.The results show that the law of the influence of laser power,ultrasonic amplitude and ultrasonic load time on welding strength are the same,that is,after reaching the maximum value,the welding strength decreases as the parameter value increases.When the laser power is 60W,the increase of the ultrasonic load time or amplitude will promote the formation of Ti-C bonds and increase the thickness of the welding transition layer.Experiments also show that when the laser power is less than 65W,the introduction of ultrasonic vibration can cause bubbles to flow and reduce bubble defects effectively.

关 键 词：超声波辅助激光连接 金属/塑料异质结构 响应曲面法 焊缝性能 化学键 

分 类 号：TG456.7[金属学及工艺—焊接]