Influence of arrangement on laser-MIG hybrid horizontal welding characteristics of aluminum alloy

被引：0
|
作者：
Chen Y. [1 ]
Lei Z. [1 ]
Yang Y. [1 ]
Chen X. [1 ]
Li Y. [1 ]
机构：
[1] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin
来源：
Lei, Zhenglong (leizhenglong@hit.edu.cn) | 1600年 / Chinese Mechanical Engineering Society卷 / 52期
关键词：
Aluminum alloy; Arrangement; Horizontal welding; Laser-MIG hybrid welding; Welding characteristics;
D O I：
10.3901/JME.2016.10.084
中图分类号：
学科分类号：
摘要：
Aiming at the defects such as undercut and collapse on weld seam surface in the conventional laser-metal inert gas(MIG) hybrid horizontal welding process of aluminum alloy, study upon the characteristics of different arrangements on laser-MIG hybrid horizontal welding of aluminum alloy is conducted. The experimental results show that, non-coplanar leading hybrid welding could reduce the weld width, improve the weld formation and effectively suppress the centerline deviation and undercut defect. When adopting the coplanar arrangement hybrid welding, the droplet transferred into the rear of keyhole, and the accumulation of the molten metal appearing in the lower areas of the pool with periodic fluctuation resulted in the stratification of weld solidification structure. However, when adopting the non-coplanar arrangement way, the droplet transferred below the keyhole and the landing position of droplets in the molten pool was above the coplanar leading way. In addition, the droplet transition frequency is slightly lower, which lead to a more uniform distribution of molten metal in the molten pool, and the accumulation metal in the lower areas decreased, effectively suppressing the undercut and collapse defects. © 2016 Journal of Mechanical Engineering.
引用
收藏
页码：84 / 90
页数：6
相关论文
共 16 条
  • [1] Guo N., Research on molten pool behaviour and control technology of rotating arc narrow gap horizontal welding, (2009)
  • [2] Zhang Q., Yang C., Lin S., Characteristics of weld formation in variable polarity plasma arc horizontal welding of 2A14 aluminum alloy, Transactions of the China Welding Institution, 34, 9, pp. 79-82, (2013)
  • [3] Gao Y., Li H., Sun B., Horizontal welding of pulsed submerged arc welding and its application in oil tank manufacturing, Transactions of the China Welding Institution, 29, 3, pp. 149-152, (2008)
  • [4] Ulrich D., Friedrich E., Hirsch P., Et al., Process for the submerged-arc welding of light metals such as aluminum and aluminum alloys
  • [5] Wang H., Wang J., Hu Y., Study on the double pulse horizontal position MAG welding process, Foundry Technology, 30, 1, pp. 95-97, (2009)
  • [6] Wang J., Chen S., Lu Z., Study on the electromagnetically controlled horizontal position MAG welding process, Journal of Beijing University of Technology, 29, 2, pp. 147-150, (2003)
  • [7] Yukio M., Satoru Z., Hiromoto Y., Et al., Method of welding in the horizontal position and welding apparatus therefor
  • [8] Guo N., Lin S., Zhang Y., Microstructure and formation characteristics of rotating arc horizontal GMAW joint, Transactions of the China Welding Institution, 30, 8, pp. 101-104, (2009)
  • [9] Yang C.L., Guo N., Lin S.B., Application of rotating arc system to horizontal narrow gap welding, Science and Technology of Welding and Joining, 14, 2, pp. 172-177, (2009)
  • [10] Guo N., Lin S.B., Zhang L., Et al., Metal transfer characteristics of rotating arc narrow gap horizontal GMAW, Science and Technology of Welding and Joining, 14, 8, pp. 760-764, (2009)
12