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 experimentalindustrial 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
276
«Фундаментальные и прикладные проблемы черной металлургии. – 2018. – Вып.32
«Fundamental and applied problems of ferrous metallurgy». – 2018. – Collection 32
«Fundamental’nye i prikladnye problemy černoj metallurgii». – 2018. – Vypusk 32
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