Testing of Flash Butt Welded Rail Joints
MIKŁASZEWICZ Ireneusz
download PDFAbstract. This article presents selected aspects of testing flash butt welded rail joints that have a decisive impact on the rails’ operational strength, including cracking in the track. Bending tests of rail joints, fatigue tests, hardness HV30, residual stress results, and microstructure of welded joints are presented. The introduction shows sporadically occurring joint defects revealed on broken fractures related to the technological process of flash butt welding. The above tests were based on the requirements of PN-EN 14587-1:2019-03 [1] and PN-EN 13674-1+A1:2017-07 [2].
Keywords
Bending, Fracture of The Joint, Fracture Discontinuity
Published online 7/20/2022, 7 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: MIKŁASZEWICZ Ireneusz, Testing of Flash Butt Welded Rail Joints, Materials Research Proceedings, Vol. 24, pp 247-253, 2022
DOI: https://doi.org/10.21741/9781644902059-36
The article was published as article 36 of the book Terotechnology XII
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] PN-EN 14587-1:2019-03. Railway application – Infrastructure – Flash butt welding of new rails – part 1: R220, R260, R320Cr, R350HT, R350LHT, R370CrHt and R400HT grade rails in a fixed plant, 2019.
[2] PN-EN 13674-1+A1:2017-07. Railway application – Track – Rail – Part 1: Vignole railway rails 46kg/m and above, 2019.
[3] H. Bałuch. Trwałość i niezawodność eksploatacyjna nawierzchni kolejowej, Wyd. Komunikacji i Łączności, Warszawa, 1980.
[4] Rolling Contact Fatigue in Rails: a Guide to Current Understanding and Practice, Railtrack PLC Guide-lines: RT/PWG/001, Issue 1, 2001, (13).
[5] I. Mikłaszewicz. Wykonywanie i badanie kolejowych złączy szynowych, Problemy Kolejnictwa 158 (2013) 35-50.
[6] S.J. Wineman, F.A. McClintock. Residual Stresses Near Rail End, Theoretical and Applied Fracture Mechanics 13 (1990) 29-37.
[7] I. Mikłaszewicz, J. Siwiec Badanie naprężeń wewnętrznych w połączeniach szyn kolejowych, Problemy Kolejnictwa 177 (2017) 45-50.
