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Proceedings Paper

Heavy-section welding with very high power laser beams: the challenge
Author(s): Jean-Claude Goussain; Ahim Becker; A. Chehaibou; P. Leca
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Paper Abstract

The 45 kW CO2 laser system of Institut de Soudure was used to evaluate and explore the possibilities offered by the high power laser beams for welding different materials in various thickness and in different welding positions. Stainless steels, low carbon steels, aluminum and titanium alloys were studied. Butt joints in 10 to 35 mm thick plates were achieved and evaluated by radiographic, metallurgical and mechanical tests. Gaps and alignment tolerances were determined with and without filler wire in order to obtain acceptable welds concerning the weld geometry, the aspect on front and end root sides. The main problem raised by heavy section welding concerns weld porosity in the weld which increases drastically with the thickness of the weld. Indications are given on their origin and the way to proceed in order to better control them. Lastly some large parts, recently welded on the system, are presented and discussed before drawing some conclusions on the prospects of very high power laser welding.

Paper Details

Date Published: 18 August 1997
PDF: 11 pages
Proc. SPIE 3097, Lasers in Material Processing, (18 August 1997); doi: 10.1117/12.281070
Show Author Affiliations
Jean-Claude Goussain, Institut de Soudure (France)
Ahim Becker, Institut de Soudure (France)
A. Chehaibou, Institut de Soudure (France)
P. Leca, Institut de Soudure (France)


Published in SPIE Proceedings Vol. 3097:
Lasers in Material Processing
Leo H. J. F. Beckmann, Editor(s)

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