Developing situation of aluminium alloy compound welding technology

Aluminium alloy has such advantages such as good conductivity,heat conductivity,light,anticorrosive and easy shaping,etc.Improving its welding productivity and quality and reducing the defect of welding have already become the urgent demand in practical production;this paper mainly introduces the welding characteristics and application situation of many kinds of aluminium alloy welding developed in recent years,such as laser arc compound welding,laser plasma welding,plasma arc welding,electron beam-plasma arc-welding,TIG-MAG welding and laser mixing friction welding,ect.