(1. 银邦金属复合材料股份有限公司，江苏省金属层状复合材料重点实验室，无锡 214145； 2. 无锡银邦防务科技有限公司，无锡 214145)
摘 要: 结合7xxx系铝合金的焊接特点，介绍7xxx系铝合金焊接焊丝的选择与优化，阐述双丝-MIG焊、激光-MIG复合焊、搅拌摩擦焊3种焊接新方法，与传统焊接方法相比，它们在7xxx系铝合金焊接上颇具优势和发展前景。通过合金化进行7xxx系铝合金母材和焊丝的优化设计、开发新的焊接方法是未来铝合金焊接领域的重要研究方向。
关键字: 7xxx系铝合金; 焊接; 焊丝选择; 焊接方法
（1. Yinbang Clad Material Company Limited, Jiangsu Key Laboratory for Clad Materials, Wuxi 214145, China; 2. Yinbang Defense Technology Company Limited, Wuxi 214145, China）
Abstract:The characteristics of welding for 7xxx series aluminum alloys were combined, and the selection and optimization of wires were introduced. Three new welding methods, such as double wire MIG welding, laser-MIG hybrid welding and friction stir welding, were stated. Compared with traditional welding methods, the three new methods have superiority and foreground in the welding of 7xxx series aluminum alloys. Alloying optimization design of base metal and wire for 7xxx series aluminum alloys, developing of new welding method are the important research direction in the future.
Key words: 7xxx series aluminum alloy; welding; selection of wire; welding method
