铝/钢异种金属Nd:YAG激光-MIG复合热源熔-钎焊接工艺  

FUSION-BRAZING WELDING FOR DISSIMILAR METALS BETWEEN ALUMINIUM AND STEEL BY Nd:YAG LASER-MIG HYBRID WELDING

作　　者：雷振[1] 秦国梁[1] 林尚扬[1] 王旭友[1] 王威[1] 

机构地区：[1]机械科学研究院哈尔滨焊接研究所,150080

出　　处：《焊接》2006年第6期35-37,共3页Welding & Joining

摘　　要：铝与钢异种金属的优质高效焊接一直是焊接领域的一项技术难题。针对铝与钢焊接的技术困难和特点,提出了可实现铝与钢熔-钎连接的大光斑激光-电弧复合热源焊接方法,用该焊接方法实现了5A02铝合金板与镀锌钢板的优质高效连接。试验结果分析表明,接头钢母材未发生熔化,焊缝与钢母材为钎焊连接,拉伸试样的破坏位置发生在接头铝母材热影响区,接头的抗拉强度与铝合金电弧熔化焊接头强度相当。It is a great difficulty to achieve high efficiency and quality joining between aluminium and steel using welding methods. Aim at the technology difficulty and characteristic, large spot laser-arc hybrid welding, which enable to weld aluminium to steel using fusion-brazing welding, was brought forward, With this method , high efficiency and quality joining between 5A02 aluminium alloy sheet and zinc-coated steel sheet was successfully achieved. The testing results indicated that it formed a brazed joint between aluminium and steel, and the steel sheet under the seam was not melted. Tensile strength of large spot laser-arc hybrid joint was equivalent with that of fusion joint by conventional arc welding, and the cracking position took place in beaz-affected zone of aluminium in the tensile test.

关 键 词：激光-电弧复合热源焊接 异种金属 熔-钎焊接 

分 类 号：TG453.9[金属学及工艺—焊接] TN248.13[电子电信—物理电子学]