CFRP与不锈钢激光焊接气泡缺陷的研究  

Study of Bubble Defects in Laser Welding of CFRP and Stainless Steel

作　　者：朱嘉鑫 陈光磊 张子靖 叶云霞[1] ZHU Jiaxin;CHEN Guanglei;ZHANG Zijing;YE Yunxia(Institute of Micro-Nano Optoelectronics and Terahertz Technology,School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学机械工程学院,江苏大学微纳光电子与太赫兹技术研究院,江苏镇江212013

出　　处：《电加工与模具》2023年第2期41-46,共6页Electromachining & Mould

基　　金：镇江市重点研发计划项目(GY2019005);江苏省重点研发计划项目(BE2020037)。

摘　　要：针对激光焊接碳纤维增强树脂基复合材料与金属过程中,焊接接头处易产生气泡的问题,以碳纤维增强树脂基复合材料与不锈钢为研究对象,仿真研究了激光功率、扫描速度、填充树脂对焊接接头附近温度场的演化规律,以得到有效控制气泡的工艺参数窗口。结果表明:激光扫描速度参数窗口范围随着激光功率的增加而增大,随着填充树脂熔点与气化点的温度差值增加而增大。因此,在高功率范围焊接过程的可控性和稳定性更好,低功率范围更需要精准控制激光扫描速度,以控制焊接接头处的气泡形成。In order to solve the problem of bubble defects in the welded joint of carbon fiber reinforced polymer(CFRP)and metal during laser welding,the evolution law of laser power,scanning speed and filling resin on the temperature field near the welded joint was simulated and studied with CFRP and stainless steel as the research object,in order to obtain a process parameter window for effectively controlling bubbles.The result showed that the laser scanning speed parameter scope increases with the increase of laser power,and also increases with the increase of the temperature range between melting point and the vaporization point of the filled resin.Therefore,the controllability and stability of the welding process are better in the high power range,and the laser scanning speed needs to be accurately controlled in the low power range to control the formation of bubbles at the welding joint.

关 键 词：碳纤维增强树脂基复合材料 激光焊接 气泡形成 仿真模拟 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]