Influence of Vertical Straightener Roller Shape on Residual Stress Level in Railway Rails

• Autorzy: Woźniak Dariusz , Żak Sylwester

Identyfikatory

DOI

10.24425/amm.2024.147815

• Języki publikacji: EN

Abstrakty

EN

The required rail straightness is achieved by straightening with roller straighteners. The consequence of the straightening operation is the introduction of residual stresses to the straightened rail. An excessive level of residual stresses accumulated in the rail during use in the track may lead to its damage or fracture. ArcelorMittal Poland S.A., in cooperation with Łukasiewicz Research Network - Institute for Ferrous Metallurgy, carried out a research project (POIR.01.02.00-00-0167/16) the aim of which was to reduce residual stresses in railway rails by changing the technological parameters of the straightening process. The results of the presented study relate to rails 60E1 and 60E2. The study includes the measurement, testing, calculations and analyses of the obtained results. The conducted research indicates the possibility of obtaining a low level of residual stress in the rails for a system consisting of a 7-roller vertical straightener and a 9-roller horizontal straightener by changing the roller settings, the shape of the rollers, the shape of the rail foot and its curvature.

Słowa kluczowe

EN

stress; methodology; straightening; roll; rail

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 1
• Strony: 245--255
• Opis fizyczny: Bibliogr. 10 poz., fot., rys., tab.

Twórcy

autor

Woźniak Dariusz

• Łukasiewicz Research Network - UPPER Silesian Institute of Technology, Karola Miarki 12-14, 44-100 Gliwice, Poland

• https://orcid.org/0000-0001-7208-5347

autor

Żak Sylwester

• Coo-Longs Experts Team, ArcelorMittal Poland S.A.

• https://orcid.org/0000-0001-5580-6536

Bibliografia

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• [2] Internationaler Eisenbahnverband, UIC Kodex 712 E, 4. Ausgabe: Handbuch der Schienenfehler, Fehler 254.1.
• [3] A. Jöller, Development of residual stress during straightening of rails. Mitteilung der Voes-Alpine Schienen GmbH&Co KG, Donawitz, Austria.
• [4] S. Żak, D. Woźniak, Controlling the state of residual stresses in railway rails by modifying pass design of straightening rollers, Achieves of Metallurgy and Materials 68, 1, 57-70 (2023). DOI: https://doi.org/10.24425/amm.2023.141473
• [5] S. Żak, D. Woźniak, The influence of changes in roll pass design on the state of residual stresses in railway rails - summary. Achieves of Metallurgy and Materials 68, 2, 439-446 (2023). DOI: https://doi.org/10.24425/amm.2023.142420.
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• [9] T. Jun, F. Hofmann, J. Belnoue, X. Song, M. Hofmann, A. Korsunsky, Triaxial residual strains in a railway rail measured by neutron diffraction, Journal of Strain Analysis 44, 563-568 (2009).
• [10] ASTM E837-13a Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method, (2013).