TPWJ, 2021, #4, 43-46 pages
Portable module for heat treatment of welded joints of railway rails
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
The design features of the portable module for heat treatment of welded joints of railway rails produced by the method
of flash butt welding are considered. The process of heat treatment includes an induction heating of welded joints with
the currents of 2.4 kHz frequency and a subsequent hardening of the rolling surface of the head by a compressed air.
The design of the portable module includes inductors connected directly to matching transformers. The inducing wires
repeat the shape of the rail surface bend with increased air gaps above the web and feathers and contain magnetic conductors
located above the rolling surface, side surfaces of the head, web and flange of a rail. It was shown that in the
welded joints of R65 type rails made of K76F steel after heat treatment in a portable module in the zone of hardening
cooling of the head, a uniform fine-grained structure with hardness is formed, reaching the level of hardness of the base
metal. The hardness of the metal in the deep layers of the rail head increases also relative to the hardness of the base
metal at the appropriate depth. 10 Ref., 2 Tables, 5 Figures.
rails, welded joints, heat treatment, portable module, metal hardness
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7. Panteleimonov, E.O. Portable module for heat treatment of welded joints of railway rails. Ukraine Pat. on utility model 143908, Int. Cl. Е01В 31/18 (2006.01), С21D 1/10 (2006.01) [in Ukrainian].
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9. Panteleimonov, E.A., Gubatyuk, R.S. (2016) Induction device for heat treatment of welded joints of railway rails. The Paton Welding J., 10, 41-43. https://doi.org/10.15407/tpwj2016.10.08
10. Kuchuk-Yatsenko, S.I., Antipin, E.V., Didkovskyi, O.V. et al. (2020) Evaluation of quality of welded joints of high-strength railway rails of modern production taking into account the requirements of Ukrainian and European standards. The Paton Welding J., 7, 2-10. https://doi.org/10.37434/as2020.07.01
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