Technology of double-sided laser-arc hybrid welding for production of T-beams

Abstract

An arc augmented laser-arc welding technology which provides higher productivity, improvement of production effectiveness and reliable quality of welded joints is the most promising technology for advancing of hull production process, in particular for T-beams production. Results obtained in executed work ensure the qualitative formation of T-beams using double sided hybrid laser arc welding with high power fiber lasers. The analysis of different mutual positions of welding heads has been conducted in this work. A method for calculating the expected total welding deformations for hybrid welding of T-beams with different wall thicknesses and girdle from shipbuilding steels of normal and high strength was also developed. The study has found the estimated ratios for the additional mechanical load to prevent welding deformations. Technology of double-sided laser-arc hybrid welding for production of T-beams was developed.