A7N01铝合金激光-MIG复合焊接坡口选择  

Choice of groove for laser-MIG hybrid welding on A7N01 aluminum alloy

作　　者：方喜风[1] 汪认[1] 崔云龙[1] 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266111

出　　处：《电焊机》2014年第12期153-157,共5页Electric Welding Machine

摘　　要：试验采用激光-MIG复合焊接方法对6 mm厚A7N01铝合金进行焊接,探寻最适宜的坡口型式。试验结果表明:激光-MIG复合焊接方法对6 mm厚A7N01铝合金坡口尺寸的适应性良好,单边30°坡口、单边40°坡口和单边50°坡口的无损探伤、显微组织、力学性能表现良好,三种坡口型式之间差别较小;单边30°坡口的焊接速度快,线能量低,充分体现了激光-MIG复合焊接的优势,单边30°坡口是6 mm厚A7N01铝合金激光-MIG复合焊接最适宜的坡口型式。Laser-MIG hybrid welding is applied to weld A7N01 aluminum alloy with 6mm thickness,and the best groove type is searched.The results show that：The adaptablity of Laser-MIG hybrid welding for the groove size of A7N01 aluminum alloy with 6mm thickness is well,nondestructive testing,microstructure,mechanical properties of singl-bevel groove with 30°,40°and 50° is well,and the differences of the three groove type is less.Singl-bevel groove with 30° has high welding speed and low heat input,so the advantage of Laser-MIG hybrid welding is well reflect,the best groove type for Laser-MIG hybrid welding on A7N01 aluminum alloy with 6mm thickness is single-bevel groove with 30°.

关 键 词：A7N01铝合金 激光-MIG复合焊接 坡口型式 

分 类 号：TG457.14[金属学及工艺—焊接]