Coaxial hybrid CO2-MIG welding system and its application in welding of aluminum alloys

被引：1
|
作者：
Zhang, XD [1 ]
Chen, WZ [1 ]
Shuang, YQ [1 ]
Wang, KJ [1 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
来源：
LASERS IN MATERIAL PROCESSING AND MANUFACTURING II | 2005年 / 5629卷
关键词：
CO2; laser; MIG; coaxial hybrid welding; aluminum alloy; process monitoring and control;
D O I：
10.1117/12.571179
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hybrid laser-arc welding is becoming one of the most significant laser welding technologies in industry due to its higher welding efficiency, higher tolerance to gaps between plates, and adjustment of composition and microstructure of the weld metal. Comparing with common off axis hybrid laser-arc welding, coaxially combined laser beam and arc can provide a symmetrical circular thermal source on the workpiece surface, which is convenient for 3-D welding. This paper introduces a coaxial hybrid CO2 laser-pulsed MIG welding system and conducts experiments of welding Al-Mg alloy plates under different welding conditions. The basic physical phenomena during welding are observed and the weld bead shape (penetration depth, weld width) are measured. The results show that hybrid laser-MIG can stabilize the arc, remarkably increase the total welding efficiency and improve the quality of weld bead formation. In addition, process and control techniques for hybrid laser-MIG welding are also proposed.
引用
收藏
页码：161 / 168
页数：8
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