Study into the process of defective railtrack arc-hardfacing

Yordan Stefanov Denev; Aylin Rafetova; Plamen Dichev

doi:10.29114/ajtuv.vol7.iss1.281

Yordan Stefanov Denev Department of Naval Architecture and Marine Engineering, Technical University of Varna http://orcid.org/0000-0001-7124-1600
Aylin Rafetova Department of Naval Architecture and Marine Engineering, Technical University of Varna
Plamen Dichev Department of Naval Architecture and Marine Engineering, Technical University of Varna

DOI: https://doi.org/10.29114/ajtuv.vol7.iss1.281

Keywords: railway, deep water, towing tank, carriadge, arc deposition, microstructure

Abstract

The paper focuses exclusively on the manual arc hardfaced layers of railtrack repairing. The study is conducted in two stages- structural analysis of layers and mechanical characteristic(hardness) study. Two types of technologies for defective areas rebuilding are developed. The first one is hardfacing without a buffer layer, and the second one is with a buffer layer. The process is carried out using electrodes particularly appropriate for this purpose, namely OK 83.28 and OK 67.45, and is designed to achieve the original hardness of the railtrack. All in all, the desired hardness value and magnitude can be achieved by hardfacing the defective areas without a buffer layer, and with the use of OK 63.28 electrodes.

References

Бельчук, Г. А, & Мацкешию, В.Д. (1971). Сварка судовьх конструкции. Судостроене, Ленинград, стр. 20-21.

Дичев, Пл., (2006). Заваряване на релси от подкранови пътища. Машиностроителна техника и технологии , НТС-Варна, 76-78;

Haivoronskyi, О. А., Poznyakov, V. D., Markashova, L. І., Ostash, О. P., Kulyk, V. V., Alekseenko, Т. О., & Shyshkevych, О. S. (2016). Structure and mechanical properties of the heat-affected zone of restored railway wheels. Materials Science, 51, 563-569.
Crossref

Mortazavian, E., Wang, Z., & Teng, H. (2022). Effect of heat treatment on microstructure and hardness of a worn rail repaired using laser powder deposition. International Journal of Transportation Science and Technology, 11(2), 406-422.
Crossref

Lenkovskyi, T. M. (2015). Influence of the friction of crack faces on the cyclic crack-growth resistance of 65G steel under mode II loading. Materials Science, 50(5), 682-686.
Crossref

Ostash, О. P., Kulyk, V. V., Poznyakov, V. D., Gaivoronskyi, О. А., & Vira, V. V. (2019). Influence of the modes of heat treatment on the strength and cyclic crack-growth resistance of 65G steel. Materials Science, 54, 776-782.
Crossref;

Peev, Gr. (2012). Multitest Metals and metallic products. Optical Emission spectral analysis. Varna

Rakhadilov, B. K., Zhurerova, L. G., Pavlov, A. V., & Wieleba, W. K. (2016). Electrolyte-plasma surface hardening of 65G and 20GL low-alloy steels. Bulletin of the University of Karaganda-Physics, 4(84), 8-13.

Seo, J. W., Kim, J. C., Kwon, S. J., & Jun, H. K. (2019). Effects of laser cladding for repairing and improving wear of rails. International Journal of Precision Engineering and Manufacturing, 20, 1207-1217.
Crossref

Seyffarth, P., Meyer, B., Scharff, A. (1992). Grober Atlas Schweib ZTU- Schaubilder. Deutscher Verlag fur Scheibtechnik DSV- Verlag GmbH, Dusseldorf, pp.108-109.

Welding Alloys Group. (2018). Fundamentals of hardfacing by arc welding.

Total number of hits on abstract = 62 times

Downloads for 2023

Download data is not yet available.