Keywords: quality ofbuild-up welding elements ofrailway turnout metallographic examination manual metal arc welding flux cored arc welding. Peer-review under responsibility of the organizing committee of Transbaltica 2015 Thisisanopenaccess article under the CC BY-NC-ND license (). Performed experiment revealed that, if restoration is performed strictly following technical procedures, the restored elements are of equally high quality however, FCAW has considerable time and material economy, consequently also cost economy in comparison with MMA. For quality control restored stock rails were further examined with metallographic examination. The paper describes the experiment during which to evaluate potential time and material economy railway turnout element, in particular stock rail, was restored using two different welding methods - manual metal arc welding (MMA) currently used by Latvian Railway and flux-cored arc welding (FCAW).
Riga Technical University, Indrika 8, LV-1004 Riga, Latvia Restoration of Railway Turnout Elements with Manual Metal Arc Welding and Flux-Cored Arc Weldingĭijs Sergejevs*, Andris Tipainis, Pavels Gavrilovs (Fillet weld/lap joint 0.7-0.8mm and above) (Docking/T type 1.0mm and above) 1.0-6mm stainless steel (Fillet weld/lap 1.2mm and above) (Docking/T type 1.5mm and above) 1.Procedía Engineering 134 (2016) 353 - 358ĩth International Scientific Conference Transbaltica 2015 l Built-in positioning function: no need to add positioning hardware. L Optional fish scale welding function: there is a dimensional arc to reduce spatter when interrupted and speed is increasing at the same time. L Wire feeder encoder feedback control: it can be adjusted quickly when the arc fluctuates. L Very high clearance tolerance: high clearance tolerance for errors in workpiece sets.
L Smooth short-circuit transition: the arc is softer, tensed, and the shape is more beautiful.
L Thin plate technology with low heat control: stable arc at very low voltage. L The robot and the welder communicate with each other through all-digital communication, which is fast and stable.īoth CO2 and mixed gas can be welded with ultra-low spatter: l Thin plate technology in the arc welding software package: small line segment acceleration, flying arc starting to improve the beat effectively, welding wire withdrawal function effectively improves the arc starting success rate, fish scale welding can weld thinner plates. L The robot moves fastly, improves the beat effectively, processes naturally.
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