低碳钢激光束电阻缝焊复合焊接中电阻缝焊温度场的数值模拟  

Numerical simulation of RSW temperature field during mild steel LB-RSW

作　　者：李永强 赵贺[2] 赵熹华[3] 张伟华[3] 

机构地区：[1]一汽轿车股份有限公司技术部,长春130012 [2]哈尔滨工业大学现代焊接生产技术国家重点实验室,哈尔滨150001 [3]吉林大学材料科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2010年第3期709-713,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50575091)

摘　　要：使用ANSYS软件对'激光束-电阻缝焊'(LB-RSW)中电阻缝焊过程的热结构和热电进行了耦合分析,研究了缝焊电流、焊接速度和滚盘间距对低碳钢板RSW温度场的影响。结果表明,滚盘电极压力可以有效控制板间间隙;增大缝焊电流、降低焊速和增大滚盘电极间距都可以提高钢板表面温度、温度梯度和升降温速度。模拟结果与热成像测量结果吻合良好。The thermo-structural and thermo-electrical coupling analyses during the resistance seam welding（RSW）process in the laser beam-resistance seam welding（LB-RSW）were performed using the software ANSYS to simulate the effects of RSW current,welding speed and RSW wheel space on the RSW temperature field in mild steel.The results showed that the electrode pressure on the RSW wheel can control the clearance between welded plates effectively,and increase of RSW current,decrease of welding speed and increase of wheel space all lead to increase of the surface temperature of the welded mild steel plates,the temperature gradient,and the temperature change rate.The simulated results are in a good agreement with measering ones by thermal image formation technique,providing a basis for prediction of optimal matching between the laser beam and electric resistance heat sources and the study of mechanism of LB-RSW.

关 键 词：材料合成与加工工艺 电阻缝焊 激光束-电阻缝焊复合焊接 温度场 数值模拟 

分 类 号：TG456.9[金属学及工艺—焊接]