Welding techniques tram rail 54G2 of R260 and block of Cogidur using FCAW-S process and fatigue testing of welded joint

Mitić, Dragan; Jović, Nikola; Gruber, Davor; Milčić, Dragan; Milčić, Miodrag

doi:10.5937/Railcon24119M

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Proceeding of scientific-expert Conference on Railway Railcon '24

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Proceeding of scientific-expert Conference on Railway Railcon '24

2024, Vehicle and infrastructure maintenance, pp. 117-120

Welding techniques tram rail 54G2 of R260 and block of Cogidur using FCAW-S process and fatigue testing of welded joint

(The title is not available in English)

Mitić Dragan^a, Jović Nikola^b, Gruber Davor^c, Milčić Dragan^d

, Milčić Miodrag^d

^aNIVAR d.o.o. Niš
^bVossloh MIN Skretnice, Niš
^cDGNDT d.o.o., Niš
^dUniverzitet u Nišu, Mašinski fakultet, Srbija

email: mitanivar@gmail.com, nikola.jovic@vossloh.com, davor.gruber@dgndt.com, dragan.milcic@masfak.ni.ac.rs, dragan.milcic@masfak.ni.ac.rs

Keywords: tram rails 54G2/R260; block of crossings/cogidur; FCAW-S process; fatigue testing

Abstract

(not available in English)

This paper explores the welding technology used for joining tram-rail 54G2 (1.0623 Group ISO/TR 15608-11.3.) with a block of Cogidur (1.8715 Group ISO/TR 15608-3.2) using a self-shielded flux-cored wire in a butt welding process, supplemented by copper washers. The study includes a comprehensive analysis of the welded joint, NDT testing as visual testing (VT) and penetrant testing (PT), as well as macrostructure and hardness evaluations. Furthermore, the paper details the final fatigue testing of the welded specimen, conducted at the Technology Center in Reichshoffen, France. The results of fatigue testing offer valuable insights into the structural integrity of welded joints done advanced welding techniques in rail systems.