The Paton Welding Journal, 2011, №02



2011 №02 (06)

2011 №02 (08)

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The Paton Welding Journal, 2011, #2, 31-36 pages  

LASER BASED GIRTH WELDING TECHNOLOGIES FOR PIPELINE CONSTRUCTION

S. KEITEL and J. NEUBERT

SLV Halle (Saale), Germany
 
 
Abstract
To increase efficiency in pipeline construction, examinations on new welding processes for joining of pipes are indispensable. To this end, increasing productivity of the welding process but also requirements on the material are of immediate importance. Hence, a possible alternative is laser-GMA hybrid welding. The technological approach is the use of the laser typical deep penetration effect for the generation of a high quality free root pass or a complete weld in one step. The results of the technology and equipment developments and their performance under construction site similar conditions are given by this presentation. A high laser power and the advantages of its guidance via fiber optics allow the use of orbital welding.
 
 
Keywords: arc welding, hybrid laser-arc welding, pipelines, welding technology, equipment, productivity of welding, construction site conditions
 
 
Received:                ??.??.??
Published:               28.02.11
 
 
References
1. Blackman, D., Dorling, V., Howard, R. (2002) High-speed tandem GMAW for pipeline welding. In: Proc. of 4th Int. Pipeline Conf. (Calgary, Alberta, Canada, 2002), 517-523.
2. Keitel, S., Jasnau, U., Neubert, J. (2008) Applications of fiber laser based deep penetration welding in shipbuilding, rail car industries and pipe welding. In: Proc. of 4th Int. Symp. on High-Power Laser and their Applications (St. Petersburg, 24-26 June 2008).
3. Keitel, S., Neubert, J., Stroufer, M. (2009) Laser based girth welding technologies for pipelines - GMAW gets support. In: IIW-Tagung (Singapore, 12-17 July 2009).
4. Schwalenberg, C. (2008) Technologieentwicklung fuer das MSG-Laserstrahlhybridschweissen in Zwangslagen an hochwertigen Rohrleitungswerkstoffen: Diplomarbeit. Hochschule Merseburg.
5. Gumenyuk, A., Gook, S., Lammers, M. et al. (2009) High power fibre laser welding for pipeline applications. In: Proc. of 5th Int. Congress on Laser Advanced Materials Processing.

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