The effect of zinc coating during joining aluminium to zinc-coated steel by welding-brazing process  

作　　者：张洪涛 冯吉才 韩超 刘积厚 

机构地区：[1]School of Materials Science and Engineering, Harbin Institute of Technology atWeihai, Weihai, 264209.

出　　处：《China Welding》2012年第4期55-58,共4页中国焊接（英文版）

基　　金：Acknowledgements The research was sponsored by Project 50905045 supported by the National Natural Science Foundation of China and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology.

摘　　要：An optical sensing system was constructed to study the coating when joining ahtminium alloy to zinc-coated steel by MIG welding-brazing process. The results showed that the coating fused to form a liquid zinc film on surface during process. The Al-Si filler metal reacted with the liquid zinc film to improve the spreadability of filler metal and thus a new method was established to join aluminium alloy and uncoated steel by depositing a mixed layer on steel surface.An optical sensing system was constructed to study the coating when joining ahtminium alloy to zinc-coated steel by MIG welding-brazing process. The results showed that the coating fused to form a liquid zinc film on surface during process. The Al-Si filler metal reacted with the liquid zinc film to improve the spreadability of filler metal and thus a new method was established to join aluminium alloy and uncoated steel by depositing a mixed layer on steel surface.

关 键 词：WELDING-BRAZING liquid zinc film dissimilar metals joining aluminium alloy STEEL 

分 类 号：TG444.74[金属学及工艺—焊接] TG453.9