Research on the Use of the MIG/MAG-Tandem Procedure in Welding X52MS Plates for the Manufacture of Pipelines

Abstract:

The pipelines used for carrying fluids and gas, made of specially designed steels in keeping with their intended uses, are obtained by welding on generator or by spiral welding, in a wide range of diameters (from 350 to 1800 mm) and pipe wall widths (between 6 and 40 mm). At present, the following welding procedures are used: automatic submerged arc welding (with 1 and 2 wires), combined with the unilateral or bilateral MIG/MAG welding procedure, according to plate thickness and edge working method. Ongoing researches focus on improving the end product [1, 2, 3, 4, 5, 6] by replacing the submerged arc welding procedure with other welding procedures which use less energy and have high deposit rates. This paper presents the results obtained by using tandem MAG welding, with two wires (2 x ø1.2 mm), in welding Y joint X52MS steel plates. The welds were carried out using a QUIROX 315 welding robot, with a 2-wire tandem MIG/MAG welding head, supplied by 2 QUINTO-GLC 603 welding sources, equipment found at Research Centre C12, Advanced Welding Eco-Technologies, owned by ICDD - UTBV. The results of the tests (carried out as per the enforceable regulations) concerning the characterisation of the executed welds proved that it is possible to obtain welds with lower energy use and lower material-relates costs and high productivity and quality.

• Periodical: Advanced Materials Research (Volume 1128)
• Pages: 236-241
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1128.236
• Online since: October 2015
• Authors: Radu Iovanas*, Cosmin Toma, Daniela Maria Iovanas, Ionut Claudiu Roata, Viorel Anton
• Keywords: MIG/MAG Tandem Welding, Pipelines, X52MS Steel

References

[1] M. Burcă, S. Negoițescu, Sudarea MIG/MAG, Timișoara, (2004).

[2] C. Toma, R. Iovanas, D.M. Iovanas, Research regarding the manufacture of pipelines through automatic tandem MAG welding on generators, Advanced Materials Research Vol. 1029, Trans Tech Publications, (2014), 100-105 (two).

DOI: 10.4028/www.scientific.net/amr.1029.100

[3] C. Fang, X. Meng, Q. Hu, F. Wang, H. Ren, H. Wang, Y. Guo, M. Mao, TANDEM and GMAW Twin Wire Welding of Q690 Steel Used in Hydraulic Support, Journal of Iron and Steel Research, International, 19, Issue 5, (2012), 79-85.

DOI: 10.1016/s1006-706x(12)60104-6

[4] S. Blackman, D.V. Dorling, High-speed tandem GMAW for pipeline welding, Proceedings of IPC (International Pipeline Conference), Vol. IPC02-27295, (2002).

DOI: 10.1115/ipc2002-27295

[5] D.W. Cho, D.V. Kiran, W.H. Song, S.J. Na, Molten pool behavior in the tandem submerged arc welding process, Journal of Materials Processing Technology, 214, Issue 11, (2014), 2233-2247.

DOI: 10.1016/j.jmatprotec.2014.04.032

[6] http: /www. cmrs. ugal. ro/gazoduct.

[7] E. Scutelnicu, C.C. Rusu, Assessment of Cooling Rate in Longitudinal Welded Pipelines performed by Submerged Double-Arc Welding", International Journal of Mechanics, Volume 8, (2014), 144-149.

[8] D. Yapp, S.A. Blackman, Recent developments in high productivity pipeline welding, J. of the Braz. Soc. of Mech. Sci. & Eng., Vol. XXVI, No. 1, January-March (2004), 89-97.

DOI: 10.1590/s1678-58782004000100015

[9] R. Iovanas, A. Joni, D. Iovanas, I. Staretu, R.F. Iovanas, The anthropomorphic six axis robot as an appropriate tool for Automatic Gas Pipe Welding Process, Applied Mechanics and Materials Vol. 162, (2012), 455-462.

DOI: 10.4028/www.scientific.net/amm.162.455

[10] http: /www. robcon. ro/ro/prod/33/Quinto%20403%20Tandem. html.

[11] API Spec 5L, 44th Edition Specification for Line Pipe (2007).