The 250 light-section rolling mill

A new bearing unit is developed for the input roll reinforcement of the stands of 170 ПАО MMK section mill. A model of wear of sliding bearings is considered, which establishes the influence of the design parameters of the bearing, the frictional characteristics of materials and the conditions of surface treatment on the resource, friction force and contour pressure. Keywords: section rolling mill, hot rolling, roll reinforcement, sliding bearings, wear model, resource. [email protected]

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Analysis of Efficiency of Roll Pass Design Options for Roughing Stands of Section Rolling Mill

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.265.1136 ◽

2017 ◽

Vol 265 ◽

pp. 1136-1141

Author(s):

D.I. Kinzin ◽

S.A. Levandovskiy ◽

O.N. Tulupov

Keyword(s):

Rolling Mill ◽

Strain Diagram ◽

Roll Pass Design ◽

Pass Design ◽

Roll Pass ◽

Contact Conditions ◽

Section Rolling ◽

Rolling Torque ◽

Design Options ◽

Roll Out

The analysis of two roll pass design options of ten roughing stands atOJSC “MMK” 370 rolling mill has been performed. The usage of a new form of the roll grooves will allow achieving higher durability of the rolls. Lesser rolls consumption will allow saving up to 800K rubles annually. More uniform load distribution by the stands will reduce the possibility of main mill lines equipment breakdowns due to the jumps of rolling torque in the most loaded non-equiaxial stands. Better contact conditions and higher billet stability at the input into equiaxial grooves will reduce the amount of metal clogging. Moreover, a changed strain diagram – with higher roll pass design efficiency factor – will increase the roll out of foundry production defects.

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Information technology as quality management tool of cutting production and efficiency of the section-rolling mill

Russian Internet Journal of Industrial Engineering ◽

10.24892/rijie/20140410 ◽

2014 ◽

Vol 2 (4) ◽

pp. 54-56

Keyword(s):

Information Technology ◽

Quality Management ◽

Rolling Mill ◽

Management Tool ◽

Section Rolling ◽

Cutting Production

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Rolling Mill Engines

Scientific American ◽

10.1038/scientificamerican05301891-12847asupp ◽

1891 ◽

Vol 31 (804supp) ◽

pp. 12847-12847

Keyword(s):

Rolling Mill

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Analysis of interconnections between technical systems on hierarchically connected technological levels of steel sheet production by hot rolling

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2020-8-847-855 ◽

2020 ◽

Vol 76 (8) ◽

pp. 847-855

Author(s):

E. N. Shiryaeva ◽

M. A. Polyakov ◽

D. V. Terent'ev

Keyword(s):

Hot Rolling ◽

Systems Analysis ◽

Rolling Mill ◽

Steel Sheet ◽

Technological System ◽

Necessary Condition ◽

Rolled Sheet ◽

Technological Systems ◽

Hot Rolling Mill ◽

Technical Systems

Complexity of modern metallurgical plants, presence of great number of horizontal and vertical interactions between their various structural subdivisions makes it necessary to apply a systems analysis to elaborate effective measures for stable development of a plant operation. Among such measures, digitalization of a plant is widespread at present. To implement the digitalization it is necessary to have clear vision about links at all the levels of the technological system of a plant. A terminology quoted, accepted in the existing regulatory documents for defining of conceptions, comprising the technological system. It was shown, that the following four hierarchical levels of technological systems are distinguished: technological systems of operations, technological systems of processes, technological systems of production subdivisions and technological systems of plants. A hierarchical scheme of technological systems of hot-rolled sheet production at an integrated steel plant presented. Existing horizontal and vertical links between the basic plant’s shops shown. Peculiarities of flows of material, energy and information at the operation “rolling” of the technological system “hot rolling of a steel sheet” considered. As a technical system of the technological process of the hot rolling, the hot rolling mill was chosen. A structural diagram of the hot rolling mill was elaborated, the mill being consisted of reheating furnaces, roughing and finishing stand groups, with an intermediate roll-table between them, and down-coilers section. Since the rolling stands are the basic structural elements of the hot rolling mill, structural diagrams of a roughing and a finishing stands were elaborated. Results of the systems analysis of the technological and technical systems, hierarchically linked in the process of steel sheet hot rolling, can be applied for perfection of organization structure of the whole plant, as well as for elaboration mathematical models of a system separate elements functioning, which is a necessary condition for a plant digitalization.

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