Automatic Welding, 2024, №01



2024 №01 (02)

DOI of Article 10.37434/as2024.01.03

2024 №01 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #1, 2024, pp. 27-32

Thermal cycles and microstructure of the flash butt welded joints of 110G13L and K76F steel rails through 08Хh18N10Т steel insert

O.V. Kavunichenko¹, I.V. Ziakhor¹, Yu.A. Shylo¹, A.M. Levchuk¹, Ye.V. Antipin¹, Andrew Fong²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²Yardway Railquip Limited, Unit A5, 29/F., TML Tower, 3 Hoi Shing Road, Tsuen Wan, N.T., Hong Kong

The article presents the results of studying the choice of temperature-time and energy-force parameters in flash butt welding (FBW) of the core of railway crossings (110G13L steel) with rail steel (K76F) through an intermediate chrome-nickel austenitic insert (08Kh18N10T). Using an algorithm of numerical solution of the three-dimensional heat conduction equation under the initial and boundary conditions corresponding to the real conditions of welding of the specimens, thermal cycles in FBW of K76F steel with 08Kh18N10T austenitic steel and 110G13L steel with 08Kh18N10T austenitic steel and temperature distribution in welded joints (in the heat-affected zone for both steels) were obtained. Ranges of varying the main technological parameters of the FBW process have been determined, in which during flashing of rails from K76F, 110G13L, and 08Kh18N10T steels, their uniform heating across the cross-section and length is provided, sufficient for achieving deformation to the specified extent during upsetting. 13 Ref., 4 Tabl., 11 Fig.
Keywords: flash butt welding, railway crossings, rail steel, pulsating flashing


Received: 17.10.2023
Received in revised form: 05.12.2023
Accepted: 09.01.2024

References

1. Gotalsky, Yu.N. (1981) Welding of dissimilar steels. Kyiv: Tekhnika [in Russian].
2. Kuchuk-Yatsenko, S.I., Kavunichenko, O.V., Ma, Ping et al. (2017) Technology and equipment for flash butt welding of railway frogs with rail ends through austenitic insert. Railway engineering. China, 12, 102-105.
3. Kuchuk-Yatsenko, S.I., Shvets, Yu.V., Kavunichenko, O.V. et al. (2015) Flash butt welding of railway frogs through cast austenitic insert. The Paton Welding J., 8, 5-7. https://doi.org/10.15407/tpwj2015.08.01
4. Kavunichenko O.V., Shvets V.I. and Antipin E.V. (2018) Peculiarities of flash-butt welding of rail frogs with rail ends. The Paton Welding J., 4, 19-24. https://doi.org/10.15407/tpwj2018.04.03
5. Karaman, I., Sehitoglu, H., Chumlyakov, Y. et al. (2001) Extrinsic stacking faults and twinning in Hadfield manganese steel single crystals. Scripta Mater., 44, 337-443. https://doi.org/10.1016/S1359-6462(00)00600-X
6. Efstathiou, C. (2009) Strengthening Hadfield steel welds by nitrogen alloying. Materials Science and Engineering, 506, 174-179. https://doi.org/10.1016/j.msea.2008.11.057
7. Efstathiou C., Sehitoglu H. (2010) Strain hardening and heterogeneous deformation during twinning in Hadfield steel. Acta Materialia, 58, 1479-1488. https://doi.org/10.1016/j.actamat.2009.10.054
8. Mohyla, P. (2004) Affect of tempering temperatures on mechanical properties of weld joints in low-alloyed creep-resistant steels. Acta Metallurgica Slovaca, 10, 193-200.
9. Zubchenko A.S. (2003) Brand of steels and alloys. Moscow, Mashinostroenie. [in russian]
10. Olivares, R., Garcia, C., DeArdo, A. et аl. (2011) Advanced metallurgical alloy design and thermo mechanical processing for rails sleels for North American heavy use. Wear, (271), 364-373. https://doi.org/10.1016/j.wear.2010.10.048
11. Sahay, S., Mohapatra, G., Totten, G. (2009) Overview of Pearlitic Rail Steel: accelerated cooling, quenching, microstructure, and mechanical properties. J. ASTM Int., 7, 1-26.
12. Alves, L., Lagares, M., Filho, R. et al. (2019) Predictive mathematical modeling of the flash-butt welding process to optimize the properties of welds of premium and super premium rails. International heavy haul STS Conference, 440-7.
13. Kuchuk-Yatsenko, S.I. et al. (2001) Method of flash-butt welding. US6294752B1. 219.100.

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