Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia

A. V. Koldin, Cand. Eng., Associate Prof., Dept. of Physics, e-mail: koldin_av@mail.ru
D. V. Terentyev, Dr. Eng., Prof., Dept. of Machinery and Technologies of Forming and Engineering, e-mail: d.terentev@magtu.ru

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia¹ ; Novotroitsk branch of NUST MISIS, Novotroitsk, Russia²
R. R. Dema, Dr. Eng., Associate Prof., Dept. of Machinery and Technologies of Forming and Engineering¹, Prof., Dept. of Metallurgical Technologies and Equipment², e-mail: demarr78@mail.ru
O. R. Latypov, Senior Lecturer, Dept. of Machinery and Technologies of Forming and Engineering¹, Associate Prof., Dept. of Metallurgical Technologies and Equipment², e-mail: latolegraf@list.ru

Hot rolling mills are experiencing “forced” operating modes while simultaneously tightening the requirements for the quality of rolled products in the sheet rolling industry at the moment. The following trends are observed in rolling production: the productivity of mills is increasing due to the reduction of pauses between strip passes, and the thickness of the rolled strip is decreasing. In this regard, it is necessary to resolve issues of determining, monitoring and regulating the thermal state of work rolls and strips. The Nosov Magnitogorsk State Technical University is conducting work on modeling thermal processes during hot rolling to study and solve the assigned problems. The paper presents the developed mathematical models of the thermal state of the strip during rolling and laminar cooling on the outlet roller table and work rolls in the finishing group of mill stands in the form of computer programs. Programs for calculating the thermal state of the strip make it possible to predict the temperature distribution in the strip during hot rolling in the finishing group of the mill and during laminar cooling after rolling, as well as provide recommendations on cooling modes (included sections of the laminar cooling system). Programs for calculating the thermal state of the work rolls of the finishing group of broadband mills make it possible to predict the average temperature of the work rolls, as well as to issue recommendations on the assignment of the flow rate of the supplied coolant in the roll cooling system to the rolling stand. Based on the developed software products, it is possible to develop and implement new technological and technical solutions aimed at increasing the durability of work rolls and the quality of strips produced in hot rolling mills.

The research was supported by a grant from the Russian Science Foundation No. 23-29-00808, https://rscf.ru/project/23-29-00808.

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