Automatic Welding, 2021, №01



2021 №01 (07)

DOI of Article 10.37434/as2021.01.08

2021 №01 (09)

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Avtomaticheskaya Svarka (Automatic Welding), #1, 2021, pp. 44-49

Simulation of electromagnetic and thermal fields in the process of induction heating on small specimens with the presence of welded joint of high-strength railway rails

R.S. Hubatyuk, S.V. Rymar, O.S. Prokofiev, V.A. Kostin, O.V. Didkovsky, O.F. Muzhychenko

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Selection of heating mode, which provides an optimal combination of technological parameters to obtain the necessary structural and phase transformations of welded butt of high-strength railway rails, which is subjected to heat treatment, is a complex process that requires carrying out a large number of experiments with a significant consumption of time, labor, power and financial resources. To solve this type of problem, it is rational to use methods of mathematical and physical modeling, which are based on the use of mathematical models, numerical calculation methods and experimental data of physical modeling in determining key parameters of heat treatment process. For this purpose, based on the theory of similarity, a mathematical model of the process of heat treatment of small specimens was proposed, taking into account the interrelated properties and physical phenomena with the original study. A simplified model of the specimen is considered, on which the optimal heating modes are tested and the properties of the weld metal subjected to heat treatment are investigated, after which the transition to specification of the heat treatment modes of the real welded butt of high-strength railway rails is carried out. This approach makes it possible to significantly reduce resources in determining the optimal heating modes of products made of high-strength carbon steels, including butt welded joints of railway rails. 13 Ref., 5 Fig.
Keywords: induction heating, heat treatment, weld of railway rails, mathematical modeling, physical modeling, small specimens..


Received: 14.12.2020

References

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