Exploring Possibilities of Implementation of Special Rutile Electrodes for Welding Microalloyed Steels

Abstract:

The paper presents test results of a new quality of a special rutile electrode, with a core of flux-cored wire made from local raw materials, based on analyzing mechanical properties and microstructure of the weld metal in MMA welding. The base metal for experimental welding was microalloyed steel marked J55 (thickness 7.0 mm) according to API Spec 5L standards (EN 10113-3. and JUS C.B0 502) which was produced in Smederevo steelworks. For experimental welding a special electrode IHIS E 35 R-2 was used, with a medium thickness rutile coating, a core of flux-cored wire and Ni content of 2.5%. The results of the analyzes indicate that the new quality special rutile electrode with the flux-cored wire core provides good structural and mechanical properties of weld metal in microalloyed steel welded joints.

• Periodical: Advanced Materials Research (Volume 1138)
• Pages: 19-24
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1138.19
• Online since: July 2016
• Authors: Mihailo Mrdak, Nikola Bajić*, Marko Rakin, Darko Veljić, Zoran Karastojković, Zoran Radosavljević
• Keywords: Chemical Composition, Mechanical Properties, Microalloyed Steel, Microstructure, Special Electrode, Weld Metal

References

[1] M. Rakin, N. Bajić, M. Mrdak, D. Veljić, M. Arsić, Analysis of mechanical and structural properties of micro alloyed steel welded joints depending on quality of cored wire, Technical Gazette 20, 4, 2013, pp.635-640.

DOI: 10.3390/ma13092152

[2] S. Cvetkovski, V. Grabulov, D. Slavkov, J. Magdeski: Influence of chemical composition and cooling rate on the Weld metal characteristics, saw process welded joints, UDK/UDC: 621. 791. 754. 051. 669. 14., Weld. Welded Struct. (2/2003), pp.67-74.

[3] J. Bosansky, G.M. Evans: The Relationship Between Properties of V and Nb Micro-alloyed Weld Metals and their Structure and Substructure, IIW Doc II-A-844-91.

[4] Magudeeswaran G, Balasubramanian V, Madhusudhan Reddy G, Balasubramaian TS. Effect of welding processes and consumables on tensile and impact properties of high strength quenched and tempered steel joints. J Iron Steel Res Inter 2008; 15(6): pp.87-94.

DOI: 10.1016/s1006-706x(08)60273-3

[5] P.T. Oldland, C.W. Ramsy, D.K. Matlock, D.L. Olson, Significient Features of High-Strength Steel Weld Metal Microstructure, Welding Journal, 1989, p.158.

[6] S. Ragu Nathan, V. Balasubramanian, S. Malarvizhi, A.G. Rao; Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints. Defence Technology, Volume 11, Issue 3, 2015, p.308.

DOI: 10.1016/j.dt.2015.06.001

[7] S. Liu, J.E. Indacochea, Control of Chemical Composition and Microstructure in Low - Carbon Microalloyed Steel Weldments, IIW Doc II-A-886-93.

[8] G.M. Evans, The Effect of Heat input on the Microstructure and Properties of all Weld Metal Deposits, Welding Journal, 61, 4, 1982, pp.125-132.

[9] G.M. Evans, The Efect of Interpass Temperature on the Microstructure and Properties of all Weld Metal Deposits, Welding Review, 1, 1982, pp.14-20.

[10] API Spec 5CT, Specification for casing and tubing, American Petroleum Institute, (2002).

[11] G.L.F. Powell, G. Herfurth, CharpyV-notch properties and microstructures of narrow gap ferritic welds of a quenched and tempered steel plate. Metall. Mater. Trans. A: Phys. Metall. Mater. Sci., 29A, 11, 1998, p.2775 – 2784.

DOI: 10.1007/s11661-998-0318-4

[12] T. Wegrzyn, Classification of metal weld deposits in terms of the amount of nitrogen. In: Proceedings of the 10th International Offshore and Polar Engineering Conference, 4, 11, 2000, p.130 – 134.

[13] J.F. dos Santos, V.R. dos Santos, J.C. Jorge, Properties of a ferritic metal cored wire weld metal deposited in the pressure range from 51 bar to 110 bar. Proceedings of the 6th International Offshore and Polar Engineering Conference, Part 4, Los Angeles, CA, USA, 1996, p.141.