激光束—电阻缝焊(LB-RSW)复合焊接研究  

Fundamental study on hybrid laser beam and resistance seam welding (LB-RSW)

作　　者：赵熹华[1] 李永强[1] 赵贺[2] 曹海鹏 张伟华[1] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130022 [2]哈尔滨工业大学现代焊接生产技术国家重点试验室,黑龙江哈尔滨150001 [3]一汽解放青岛汽车厂,山东青岛266043

出　　处：《电焊机》2009年第1期33-38,共6页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50575091)

摘　　要：基于提出的LB-RSW复合焊接方法的基本概念,研究了"激光束—电阻缝焊(LB-RSW)"复合焊接系统的结构形式和基本组成,自主研制了专用的多功能电阻缝焊机,并与Nd:YAG激光器和焊接机器人组成了LB-RSW焊接试验系统;工艺试验表明,LB-RSW比单独激光焊有更大的深/宽比和拉剪力,显著提高了激光对高反射率材料的加工能力和工程应用范围;进行了LB-RSW中RSW温度场和电流场的数值模拟和热成像测量。结果表明,数值模拟技术和红外热成像技术是研究复合焊接过程的有效手段。Based on the fundamental concept of hybrid laser beam and resistance seam wclding（LB-RSW）,propounded by the authors,structure form and basic component of hybrid LB-RSW system was studied,and special multifunctional resistance seam welding machine was designed and manufactured independently,which constitutes the hybrid welding experimental system with Nd： YAG laser and welding robot.The experimental results indicate that, LB-RSW, which can achieve larger weld penetration depth/width ratio than that obtained by single laser beam welding,enhances the processing capacity on high reflectivity materials dramatically, thus it widens the application field of LB in engineering.Besides, numerical simulation of temperature field and electrical current field gained from RSW during LB-RSW was carried out,meanwhile,the temperature field was also measured using infrared thermography system.The results show that numerical simulation technology and infrared thermography technology are effective method to study hybrid welding process.

关 键 词：复合焊接 激光焊 电阻缝焊 焊接设备 数值模拟 

分 类 号：TG456.7[金属学及工艺—焊接]