DOI: 10.52150/2522-9117-2018-32-280-289

Verenev Valentin Vladimirovich, Dr.Sci. (Engin.), Senior Research Scientist, Iron and Steel Institute named after Z.I. Nekrasovof the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: verenev0704@gmail.com, ORCID 0000-0002-2561-5365

Generalization of research results on the dynamics of continuous widestrip hot-rolling mills

Abstract. The aim of the work is to summarize the results of experimental industrial and theoretical studies of dynamic processes in wide-strip hot rolling mills 1680, 1700, 2000 and 2500. We describe the methods of collecting, storing, identifying, visualizing and mathematical processing of large data arrays, which made it possible to establish new laws and correlations of technological parameters. New results related to the peculiarities of transient processes, their patterns and the use of the latter for the purpose of diagnosing technology and equipment condition are presented. Vibrodynamic processes are described when the strip is captured by the rollers. For the first time, a correlation between the maximum peak moment when the strip is captured and the static rolling moment on the 1680 mill is obtained and substantiated by measuring and statistical modeling. A new mathematical model of the roll line is developed, incorporating the equations of dynamic processes in gears and axles of the gearbox. For the first time, the dynamics of the formation of intercellular tensions in the process of sequential filling and release with a 6-cell band is shown. A complete mathematical model and a computer program for the dynamic interaction of six-group stands of a rolling strip have been developed. A new line of research has been proposed, which includes the
search, substantiation and testing of new methods and methods for diagnosing the technical condition of rolling mills based on the use of transients and their parameters in various modes of equipment operation. Proposed and tested in industrial conditions at the mills 1680 and 1700-M are effective ways to reduce
the impact loads during the period of the strip capture by the rollers.
Keywords: broadband mill, hot rolling, mathematical model, dynamic transients, moment, tension

Reference
1. Saf’yan M.M. Nepreryvnyye listovyye stany goryachey prokatki. – M.: Metallurgizdat. – 1956.
2. Saf’yan M.M. Prokatka shirokopolosnoy stali. – M.: Metallurgiya. – 1969. – 460 s.
3. Kozhevnikov S.N., Skichko P.YA. Eksperimental’noye issledovaniye glavnykh liniy chistovoy gruppy kletey nepreryvnogo tonkolistovogo stana 1680 zavoda “Zaporozhstal'”. Izv. vuzov. Chernaya metallurgiya. – 1961. –№ 12. – S. 179–184.
4. Kozhevnikov S.N. Dinamika mashin s uprugimi zven’yami. – Kiyev. Izd. AN USSR. – 1961. – 312 s.
5. Verenev V.V. Verenev Diagnostika i dinamika prokatnykh stanov. [V.V.Verenev, V.I.Bol’shakov, A.YU.Putnoki i dr.] Monografiya. Dnepropetrovsk: IMA – press. 2007. – 144 s.
6. Verenev V.V. Dinamicheskiye protsessy v kletyakh shirokopolosnogo stana 1680. [V.V.Verenev, V.I.Bol’shakov, A.YU.Putnoki i dr.] Monografiya. – Dnepropetrovsk: IMA-press, 2011. – 184 s.
7. Verenev V.V. Snizheniye dinamicheskikh nagruzok i diagnostika shirokopolosnykh stanov v perekhodnykh rezhima. Monografiya. Nikopol’: SPD. Fel’dman O.O. 2014. – 203 s.
8. Verenev V.V. Dinamicheskiye protsessy v polosovykh stanakh kholodnoy prokatki. – Dnepropetrovsk: Lira. 2015. – 112 s.
9. Verenev V.V. Perekhodnyye protsessy pri nepreryvnoy prokatke. [V.V.Verenev, A.YU.Putnoki, N.I.Podobedov]. Monografiya. – D.: Litograf, 2017. – 116 s.
10. Verenev V.V. Dinamicheskiye protsessy v shirokopolosnykh stanakh goryachey prokatki. Monografiya. – D.: Litograf. 2018. – 127 s.