Research of Laser Welding for Hot Rolling Strip Steel

Abstract:

Focused on the question of laser welding break of hot rolling strip steel JZZ, The causings of defect of laser welding were studied experimentally with the Trumph TLF12000 fast-flow CO₂ laser,. and the methods of avoiding the defect were porposed. The results showed that owing to the steel plate was thicker and big welding velocity, resulted in large depth/breadth ratio and high cooling velocity , the solidification crack occurred during welding process. When the method of laser welding with filling metal was used,the welding defect was avoided , the better performance index of weld as good as that of base metal is available.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 2341-2344
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.2341
• Online since: July 2011
• Authors: Ru Tao Zhong, Zhi Jun Huang, Yu Tao Wang
• Keywords: Crack, Filling Metal, Hot Rolling Strip Steel, Laser Welding

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