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Proceedings Paper

Study on process stability and seam characteristics of high power laser welding with filling wire for high thickness steel
Author(s): Yan Cai; Guohua Li; Jian Huang; Lianglei Zhao; Yixiong Wu
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Paper Abstract

This paper focused on a systemic solution to high power laser welding for high thickness shipbuilding steel. The laser induced plasma not only absorbs laser energy but also affect welding process stability especially when laser power is higher than 10 kW. The electron density, electron temperature and plasma height are analyzed in paper with high speed camera and spectrometer in this paper. Laser Supported Combustion (LSC) result in instable laser welding process and cause bad seam quality. As an effective method to suppress plasma and keep stable welding process, flow rate of side blowing gas is analyzed. The relationship between Seam shape, its mechanical properties and welding parameters is studied. Experiments results showed that High power laser welding is a qualified and efficient method for high thickness shipbuilding steel.

Paper Details

Date Published: 1 February 2008
PDF: 10 pages
Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 682504 (1 February 2008); doi: 10.1117/12.760347
Show Author Affiliations
Yan Cai, Shanghai Jiao Tong Univ. (China)
Shanghai Key Lab. of Materials Laser Processing and Modification (China)
Guohua Li, Shanghai Jiao Tong Univ. (China)
Shanghai Key Lab. of Materials Laser Processing and Modification (China)
Jian Huang, Shanghai Jiao Tong Univ. (China)
Shanghai Key Lab. of Materials Laser Processing and Modification (China)
Lianglei Zhao, Shanghai Jiao Tong Univ. (China)
Shanghai Key Lab. of Materials Laser Processing and Modification (China)
Yixiong Wu, Shanghai Jiao Tong Univ. (China)
Shanghai Key Lab. of Materials Laser Processing and Modification (China)


Published in SPIE Proceedings Vol. 6825:
Lasers in Material Processing and Manufacturing III
ShuShen Deng; Akira Matsunawa; Xiao Zhu, Editor(s)

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