Journal
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
Volume 19, Issue 3, Pages 209-213Publisher
MANEY PUBLISHING
DOI: 10.1179/1362171813Y.0000000171
Keywords
Laser hybrid welding; Solidification cracking; Partial penetration welding; Tube welding; Thick walled parts; Design of experiments
Funding
- AiF within the program for the promotion of industrial research collaboration (IGF) by the Federal Ministry of Economics and Technology (BMWi) on behalf of an enactment by the German Bundestag [15.917 N, Aachener Str. 172, 40223]
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Laser GMA hybrid welds, producing partial penetration, were conducted on stiff tubes made of S460NH. Experiments, using a design-of-experiments plan were conducted to examine the influence of the welding parameters on the occurrence of solidification cracks. Results say that cracks diminish, when high levels of arc power are applied, while their number increases with rising laser beam power. The weld velocity had no measurable impact.
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