铝合金厚板激光扫描填丝焊接气孔抑制  

Aluminum alloy thick plate laser scanning wire filling welding porosity suppression

作　　者：邹吉鹏 李连胜 宫建锋 黄瑞生 李玉斌[3] ZOU Jipeng;LI Liansheng;GONG Jianfeng;HUANG Ruisheng;LI Yubin(Harbin Welding Institute Limited Compay,Harbin 150028,China;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;China Academy of Engineering Physics,Mianyang 621054,China)

机构地区：[1]哈尔滨焊接研究院有限公司,哈尔滨150028 [2]哈尔滨工业大学先进焊接与连接国家重点试验室,哈尔滨150001 [3]中国工程物理研究院材料所,绵阳621054

出　　处：《焊接学报》2019年第10期43-47,66,I0003,共7页Transactions of The China Welding Institution

基　　金：国家重点研发计划项目(2016YFB1102100);黑龙江省资助项目(GX18A007)

摘　　要：为减少大厚板5A06铝合金激光焊接缺陷,提高焊接过程稳定性,采用激光光束以一定方式运动的扫描焊接的新焊接方法,研究了激光束不同的运动轨迹、幅度、频率对铝合金激光深熔焊接焊缝气孔率的影响,并在焊接坡口设计优化基础上应用窄间隙扫描激光填丝焊接技术进行130 mm厚5A06铝合金焊接试验.结果表明,采用圆形扫描方式,当激光光束的扫描幅度大于1 mm,扫描频率选择最高频率附近时,能够大幅降低焊缝气孔率;采用窄间隙激光扫描填丝的焊接方法,获得了焊缝平均气孔率1%,无侧壁未熔合、层间未熔合、裂纹等焊接缺陷的130 mm厚5A06铝合金优质焊接接头.To reduce big plate of 5A06 aluminum alloy laser welding defects,which enhances the stability of welding process,using a laser beam in a certain way of scanning new welding method,welding laser beam was studied different trajectories,amplitude,frequency of deep penetration laser welding aluminum alloy weld porosity,and the welding groove design optimization based on the application of narrow gap scanning laser wire filling welding technology for 130 mm thick 5A06 aluminum alloy welding test.The results show that when the scanning amplitude of the laser beam is greater than 1 mm and the scanning frequency is near the highest frequency,the porosity of the weld can be greatly reduced.The welding method of narrow gap laser scanning wire filling was adopted to obtain the high-quality welding joints of 130 mm 5A06 aluminum alloy with average porosity of 1%,no side wall nonfusion,interlayer non-fusion,crack and other welding defects.

关 键 词：激光扫描焊接 铝合金 大厚板 窄间隙 

分 类 号：TG456.7[金属学及工艺—焊接]