Poletskov P.P., Alekseev D.Yu., Kuznetsova A.S., Gulin A.E., Emaleeva D.G., Adishchev P.G. Analysis of Simulated Plate Cooling Schedules

DOI: 10.18503/1995-2732-2022-20-4-102-109

Abstract

Relevance. Plate flatness is one of the most important indicators of the quality of finished products. Yet a decisive role in ensuring the regulated characteristics of rolled products is attributed to plate cooling in a roller-quenching machine. An increase in flatness of heat-treated rolled products is possible by controlling the conditions of heat transfer during cooling and reducing the gradient of internal stresses in steel. In this regard, it is relevant to analyze the effect of the following quenching process parameters on the features of heat transfer and stresses in steel: temperature of heating steel for quenching, cooling water temperature, the cooling schedule, traveling speed and plate thickness. Objective. The aim of the research is to study the influence of cooling schedules on stresses formed in plates during the quenching process. Methods Applied. To achieve the aim of the research, a simulation model was created to show changes in the thermal state of steel during cooling in the roller-quenching machine of mill 5000. A research method was finite element modeling in DEFORM-3D. The developed model factors into changes in steel temperature due to air cooling (heat transfer by radiation and convection), when plates travel from the heating furnace to the first header and between headers and sections. In addition, it factors into three water-steel contact zones, which are characterized by different heat transfer conditions: the impact area of a water flow on the plate surface, the area of a low water flow rate, and the area of film boiling. The simulation was performed for four cooling options, which differ in the total water consumption as well as the distribution of water consumption for each of the five zones of the roller-quenching machine. Results. The influence of the cooling schedules on the distribution of temperature fields and stresses in steel formed in the cross section of plates during quenching was studied.

Keywords

plates, heat treatment, quenching, finite element modeling, cooling model, flatness

For citation

Poletskov P.P., Alekseev D.Yu., Kuznetsova A.S., Gulin A.E., Emaleeva D.G., Adishchev P.G. Analysis of Simulated Plate Cooling Schedules. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2022, vol. 20, no. 4, pp. 102-109. https://doi.org/10.18503/1995-2732-2022-20-4-102-109

Pavel P. Poletskov – DrSc (Eng.), Director of the Engineering Center of the Research and Development Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID 0000-0001-9209-7759

Daniil Yu. Alekseev – Engineer of the Engineering Center of the Research and Development Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it..

Alla S. Kuznetsova – PhD (Eng.), Junior Researcher of the Engineering Center of the Research and Development Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it..

Aleksandr E. Gulin – PhD (Eng.), Junior Researcher of the Engineering Center of the Research and Development Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID 0000-0002-7722-4112

Dinara G. Emaleeva – PhD (Eng.), Junior Researcher of the Engineering Center of the Research and Development Department, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID 0000-0002-2217-180X

Pavel G. Adishchev – postgraduate student, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it..

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