NDLI: Welding of high thickness steel plates using a fiber coupled diode laser with 50 kW of output power

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Welding of high thickness steel plates using a fiber coupled diode laser with 50 kW of output power

Content Provider	Semantic Scholar
Author	Reisgen, Uwe Weinbach, Matthias Olschok, Simon Dipl.-Ing. Engels, Oliver
Copyright Year	2017
Abstract	Welding in the plate thickness range between 10 mm and 25 mm is increasingly gaining importance in the industry, e.g. shipbuilding and pipeline production. Modern laser beam welding methods allow for economical joining in this thickness range. Tolerances regarding the weld preparation, however, are challenging for such a welding process. Variable welding gaps are unavoidable in this plate thickness range and need to be bridged efficiently and reliably. Thanks to the perpetual development of the diode laser technology by Laserline, fibre coupled diode laser beam sources with a continuous wave (cw) output power of 50 kW and above are available today. Diode lasers have the highest wall plug efficiency of all laser systems reaching more than 50% overall efficiency and have proven themselves even in the harshest of production environments. In combination with a large spot diameter this allows for the economical joining of steel plates with a large plate thickness and the typically occurring tolerances. This paper presents the first welding results obtained with structural steel in the plate thickness range between 20 mm and 25 mm. Weldings in butt joint and T-joint configuration with sawed zero-gap and different pre-set joint gaps are shown and discussed. Besides weld seams with a high degree of quality also typical weld defects and other distinctive features are demonstrated.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.wlt.de/lim/Proceedings2017/Data/PDF/Contribution66_final.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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