2018-1(26)

Design, manufacturing and commissioning of nuclear industry equipment

Article NameOrbital Hybrid Laser-arc Welding Using a High-power Fibre Laser for Pipeline Construction
AuthorsS.E. Gook*1, A.V. Gumenyuk*,**2, Michael Rethmeier*,**,***3
Address

* Fraunhofer Institute for Production Systems and Design Technology, Pascalstraße 8-9, 10587 Berlin, Germany
1 ORCID: 0000-0002-4350-3850
WoS ResearcherID: F-8636-2017
e-mail: sergej.gook@ipk.fraunhofer.de ;
2e-mail: andrey.gumenyuk@bam.de
** Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany
*** Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
3 ORCID: 0000-0001-8123-6696
WoS ResearcherID: B-9847-2009

AbstractRecently developed fibre lasers provide multi-kilowatt beam power with high quality at impressive energy efficiency. Combined with gas metal arc welding (GMAW) equipment these lasers can be used in a hybrid process to weld thick-walled constructions single-pass, that are currently welded using multi-pass techniques. The main benefits are a reduction of heat induced distortions, due to the low heat input, as well as savings in filler material and process time. Probable applications can be found in power generation, ship building and pipeline constructions. An orbital (girth) laser-hybrid process using a 20 kW fibre laser and a GMAW torch is currently examined at the BAM, Berlin. The aim of this research is to obtain a stable and crack free girth welding process and to demonstrate its application in pipeline construction. The experiments are carried out on 16 mm thick plates as well pipe rings with 36" (914 mm) pipe diameter of X65. Particular welding parameters, such as welding speed, GMAW power, arc length are varied and their influence on the appearance of the weld in the different welding positions is analyzed. Even though issues remain that demand further research it could already be shown that the rings can be welded using a girth hybrid process that is divided into two half girth processes in downward direction.
Keywordshigh-power fibre laser, pipeline, laser-hybrid welding, thick plates
LanguageRussian
References

[1] Nakamura S., Ikuno Y., Maeda T., Furukawa Y., Kodama S.: Automatic control technology of welding machine MAG-II for onshore pipelines. Nippon Steel Technical Report (2005) H. 92, S. 51-55. (in English)

[2] Yapp D., Blackman-S.A.: Recent developments in high productivity pipeline welding JOM 11, 11th International Conference on the Joining of Materials, Helsingör, DK, May 25-28, 2003. (in English)

[3] Koga S. et. al.: Study on all position electron beam welding of large diameter pipeline joints (Report1,2) Welding International  15 (2001) pp. 28-33, 92-99. (in English)

[4] Gainand Y. et al.: Laser orbital welding applied to offshore pipe line construction. Pipeline technology Vol. II  Elsevier Science 2000 pp. 327-343. (in English)

[5] Moore P.L. et al.: Development of Nd: YAG laser and laser / MAG hybrid welding for land pipeline applications. Welding and Cutting, Vol. 3, No. 3 (2004), pp. 38–43. (in English)

[6] Wahba, M., M. Mizutani, and S. Katayama.: Single pass hybrid laser-arc welding of 25 mm thick square groove butt joints. Materials & Design 97 (2016): 1-6. (in English)

[7] Russel J.D.: Laser weldability of C-Mn steels. Assessment of Power Beam Welds, European Symposium, Geesthacht/Germany, February 1999. (in English)

[8] N.N.: Guidelines for Approval of CO2-Laser Welding in Ship Hull Construction. Classification Societies unified, 1996. (in English)

[9] Gook S., Gumenyuk A., Stelling K., Lammers M., Rethmeier M.: Schweißen im Dickblechbereich mit einem 20 kW-Faserlaser. DVS-Berichte Bd. 250, DVS-Verlag, Düsseldorf, 2008, pp. 264-270. (in German)

[10]        Rethmeier M., Gook S., Lammers M., and Gumenyuk A.:  Laser-Hybrid Welding of Thick Plates up to 32 mm Using a 20 kW Fibre Laser. Proceedings of the 8th International Welding Symposium - Innovations in Welding and Joining for a New Era in Manufacturing. Japan Welding Society. LW-11, 2008, p. 43. (in English)

[11] Gumenyuk, A., Rethmeier, M.:  Developments in hybrid laser-arc welding technology. In Handbook of Laser Welding Technologies, pp. 505-521, 2013. (in English)

Papers47 - 57
URL ArticleURL Article
 Open Article