Kurpe O.
Doctor of Philosophy, Chief Expert, METINVEST HOLDING, LLC, Mariupol,
Ukraine
Kukhar V.
Doctor of Sciences, Professor, Head of Metalforming Department, Pryazovskyi
State Technical University, Mariupol, Ukraine
DEVELOPING OF MANUFACTURING TECHNOLOGY FOR HOT
ROLLING COILS (STEEL GRADE S355MC) AT THE WIDE-STRIP
ROLLING MILL 1700
Introduction. Widely known advantages of the rolled product manufacturing
with the use of
thermo-mechanical controlled process (TMCP). Increase in the
customer demand for the products, which are manufactured in compliance with the
abovementioned technology, makes domestic producers to master their production.
The product mix, which can be manufactured, directly depends on the producer’s
equipment characteristics and composition, in other words, it is important to
preliminary make technical and technological assessment of the potential for TMCP
technology implementation into production. Indeed, the operating conditions in the
companies manufacturing rolled products [1] can be a very important factor for
increasing competitiveness of steel products in European markets. It should be noted
that the domestic hot rolling coil mills were constructed much earlier than the
thermomechanical rolling technology was widespread. Therefore, this technology and
products are not designed and shall be implemented in a phased manner.
Problem definition. The paper objective is to develop manufacturing technology
for hot rolling coils up to 6×1500 mm (steel grade S355MC) in accordance with EN
10149-2 at PJSC ILYICH IRON & STEEL WORKS OF MARIUPOL (Mariupol),
without equipment upgrading.
Review of recent studies and publications. The diffusion of the thermo-
mechanical controlled process (TMCP) technology in the world commenced during the
1960’s of the last century [2]. In our country, this technology was introduced 10 years
later [3]. During the period of implementation, TMCP technology has evolved, and
relevant equipment has also undergone significant changes [4-6]. Currently, this
production practice presents the greatest potential and is constantly developing.
Nowadays, TMCP is used to manufacture the rolled products for various
structures and construction, pressure vessels, pipelines of plates and coils. The results
of its intensive study are presented in many papers of the international authors [4-18].
If earlier TMCP was predominantly used to manufacture the rolled products from
low carbon steel grades [14, 15], steels, in which the carbon content is 0.40% [19],
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