Фундаментальные и прикладные проблемы черной металлургии

DOI: 10.52150/2522-9117-2024-38-336-361

Prykhodko Ihor Yuriiovych, D. Sc. (Tech.), Senior Researcher, Head of Department, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-5651-8106. E-mail: isi@ukr.net

Krot Pavlo Viktorovych, Ph. D. (Tech.), Assistant Professor, Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego St., 27, Wrocław, 50370, Poland. ORCID 0000-0002-3347-3862

Raznosilin Valentyn Viacheslavovych, Master of Science, junior researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0002-4463-4588

Vorobei Sergii Oleksandrovych, D. Sc. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0003-0119-3935

Klemeshov Yevhen Serhiiovych, Ph. D. (Tech.), Researcher, Processes and Machines for Metal Forming Department, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-6486-5319. Email: klemeshov.evgen@gmail.com

Malygin Mykhaylo, Liberty Częstochowa, Ludwika Trochimowskiego 25, Częstochowa, 42200, Poland. ORCID 0000-0003-0418-1235

Semenov Ihor, Ph. D. (Tech.), Liberty Częstochowa, Ludwika Trochimowskiego 25, Częstochowa, 42200, Poland. ORCID 0000-0003-2779-611X

Matyjaszczyk Krzysztof, Liberty Częstochowa, Ludwika Trochimowskiego 25, Częstochowa, 42200, Poland. ORCID 0000-0002-6003-6123

SYSTEM FOR AUTOMATIC FRONT ENDS CONTROL OF THICK PLATES BY ASYMMETRIC HOT ROLLING

Abstract. Research has been carried out and the problem of uncontrolled front ends bending of thick sheets in a hot rolling mill has been solved. A set of main factors has been determined that explain the reasons for the formation of the front end bending of the sheets during normal rolling. With the use of finite element modeling, a method of adequate influence on the front-end plate curvature by the mismatch of the drives speed during the capture period is developed, depending on the entry plate thickness and the form factor of the deformation zone. The following influencing factors are considered: the “run length” of the faster roll over the sheet surface in the neutral section; the difference of contact stresses on the rolls; the neutral angles displacement and metal forward slip in the contacts with both rolls. Based on the established regularities, a control model was built. The model is implemented in the automatic control system of the industrial plate hot rolling mill 3600 of Huta Częstochowa (Poland). Leveling of the front ends of thick plates is realized by a controlled high-speed asymmetry of the rolling process during the sheets biting by the rolls, which made it possible to eliminate of the front end curvature of the sheets and increase the output product quality. The number of sheets with curvature, which requires re-hot straightening, has been reduced by 25%.

Key words: steel sheet, hot rolling mill, drive speed control, high-speed asymmetry, front end bending.

DOI: https://doi.org/10.52150/2522-9117-2024-38-336-361

For citation: Prykhodko, I. Yu., Krot, P. V., Raznosilin, V. V., Vorobei, S. O., Klemeshov, Ye. S., Malygin, M.S., Semenov, I.A., & Matyjaszczyk, K. (2024). System for automatic front ends control of thick plates by asymmetric hot rolling. Fundamental and applied problems of ferrous metallurgy, 38, 336-361. https://doi.org/10.52150/2522-9117-2024-38-336-361.

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