Premium Rail Flash-Butt Welding Process Window Based on Phase Transformations
Henrique Boschetti Pereira,
Edwan Anderson Ariza Echeverri,
Dany Michell Andrade Centeno
et al.
Abstract:Currently, heavy-haul and passenger rails are joined by a welding process, which can be either flash-butt welding or thermite. The joining process has increased the overall rails strength, but the welding parameters optimization is tricky and must be performed and studied to improve the weld quality. Heavy-haul rails are high carbon steels, containing alloying elements and as such, the weld presents a series of difficulties. On one side, martensite should be avoided during the cooling step, while on the other,… Show more
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