Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 219, Issue -, Pages 278-285Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2014.12.026
Keywords
Laser welding; High-power laser; Edges morphology; Deep penetration; Structural steel
Funding
- Fimecc Oy
- Finnish Funding Agency for Technology and Innovation
- Academy of Finland
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This study investigates the influence of joint edge surface edge roughness and pre-set air gap on the weld quality and penetration depth in partial vacuum atmospheric conditions laser beam welding. High-power autogenous disk laser keyhole welding of low alloyed steel SM400A was carried out with butt joint configuration with 16 kW laser power and 1 m/min welding speed in partial vacuum atmospheric conditions. Geometry, quality of the welds was investigated. The results indicate that a significant increase in penetration depth can be achieved with constant heat input without loss of weld quality. (C) 2015 Elsevier B.V. All rights reserved.
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