scholarly journals INVESTIGATION OF THE MAINTENANCE ORGANISATION FOR HOT ROLLING MILLS

2012 ◽  
Vol 12 (2) ◽  
Author(s):  
P.K. Pretorius ◽  
J.K. Visser
Keyword(s):  
Hot Rolling ◽  
Rolling Mills

Thermal-fatigue resistant work rolls for hot rolling mills

2019 ◽  
Vol 61 (5) ◽  
pp. 397-404
Author(s):  
Vyacheslav Goryany ◽  
Olga Myronova ◽  
Johannes Buch ◽  
Alexander Buch ◽  
Frank Stein
Keyword(s):  
Thermal Fatigue ◽  
Hot Rolling ◽  
Rolling Mills ◽  
Work Rolls

A new dust removal technology used in hot rolling mills: Atomized spray with higher dedusting efficiency

2021 ◽  
pp. 127574
Author(s):  
Wen Xiong ◽  
Liandong Fu ◽  
Gang Zhao ◽  
Yancai Chen ◽  
Xuesong Zhao ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Dust Removal ◽  
Rolling Mills ◽  
Removal Technology

Temperature regulation of rollers in broad-strip hot-rolling mills

2011 ◽  
Vol 40 (11) ◽  
pp. 985-989 ◽  
Author(s):  
I. Yu. Prikhod’ko ◽  
S. A. Vorobei ◽  
A. A. Sergeenko ◽  
V. V. Raznosilin ◽  
S. E. Shatokhin
Keyword(s):  
Hot Rolling ◽  
Temperature Regulation ◽  
Rolling Mills ◽  
Broad Strip

scholarly journals Finite elements prediction of thermal stresses in work roll of hot rolling mills

2010 ◽  
Vol 2 (1) ◽  
pp. 707-716 ◽  
Author(s):  
D. Benasciutti ◽  
E. Brusa ◽  
G. Bazzaro
Keyword(s):  
Finite Elements ◽  
Hot Rolling ◽  
Thermal Stresses ◽  
Work Roll ◽  
Rolling Mills

Feedback Linearized Robust Control of Looper Electric Drives for Hot Rolling Mills

2021 ◽  
Author(s):  
B. Kuznetsov ◽  
I. Bovdui ◽  
T. Nikitina ◽  
V. Kolomiets ◽  
B. Kobylianskyi
Keyword(s):  
Robust Control ◽  
Hot Rolling ◽  
Rolling Mills ◽  
Electric Drives

scholarly journals Efficiency analysis of an induction motor with direct torque and flux control at a hot rolling mill

2015 ◽  
Vol 26 (3) ◽  
pp. 111-115
Author(s):  
Rupert Gouws
Keyword(s):  
Simulation Model ◽  
Induction Motor ◽  
Hot Rolling ◽  
Rolling Mill ◽  
Original System ◽  
Efficiency Analysis ◽  
Flux Control ◽  
Rolling Mills ◽  
Detailed Simulation ◽  
Hot Rolling Mill

This paper presents an efficiency analysis of an induction motor with direct torque and flux control at a hot rolling mill in South Africa. Two scenarios were evaluated: 1) where the induction motor was controlled at a constant speed with a variable thickness slab; and 2) where the speed of the induction motor was controlled according to the thickness of the slab. Both scenarios used the speed as reference to control the torque and flux of the induction motor. A comparison on the energy consumption of the induction motor for both scenarios was done by means of a detailed simulation model. The simulation model for this specific case study is explained in detail. The results obtained showed an increase in the efficiency of the induction motor from the original system (scenario 1) to the improved system (scenario 2). Part of this paper provides an overview on hot rolling mills.

scholarly journals Generalization of research results on the dynamics of continuous wide-strip hot-rolling mills

2018 ◽  
pp. 275-289
Author(s):  
V.V. Verenev
Keyword(s):  
Mathematical Model ◽  
Hot Rolling ◽  
Large Data ◽  
Dynamic Processes ◽  
Technological Parameters ◽  
Rolling Moment ◽  
Rolling Mills ◽  
Wide Strip ◽  
The Impact ◽  
First Time

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.

Conceptual Directions of Creating Digital Twins for Electrotechnical Systems of Rolling Mill Facilities

2021 ◽  
Vol 64 (1) ◽  
pp. 54-68
Author(s):  
Andrey Radionov ◽  
◽  
Alexander Karandaev ◽  
Boris Loginov ◽  
Olga Gasiyarovа ◽  
...  
Keyword(s):  
Process Control ◽  
Control Systems ◽  
Hot Rolling ◽  
Rolling Mill ◽  
Rolling Mills ◽  
Wide Strip ◽  
Process Control Systems ◽  
Digital Twins ◽  
Virtual Commissioning ◽  
Hot Rolling Mill

This article considers the development of digital twins (DT) for the mechatronic facilities of the coiling machine group in a wide-strip hot rolling mill. The analysis of Russian and foreign sources confirmed that a lot of attention is paid to the economy digitalization. All of the leading metal plant equipment and electrical engineering system manufacturers are working on creating DTs. The analysis of the literature showed that the authors lack a uniform understanding of the conceptual directions in the creation of DTs and there are many definitions of this term. Therefore, the first part of the article deals with the analysis of the digital twin concepts according to their application at industrial companies. The authors substantiate the feasibility of the DT de-velopment for the electromechanical and mechatronic systems of the most complex metal production components, i.e., rolling mills. This initiative development is relevant due to the reconstruction of the 2500 wide-strip hot rolling mill at Magnitogorsk Iron and Steel Works PJSC (MMK PJSC) that involves the installation of unique equipment. Due to this, the development of DTs to implement the virtual commissioning of the equipment becomes a priority. The virtual adjustment of automation and process control systems is also required. This problem can be solved through the example of three coiling machines, each of which has electric and hydraulic auxiliary equipment. These coiling machines are used for rolling the heavy hot-rolled bar and they feature a unique design. Therefore, the development of DTs for mechatronic facilities is a novel scientific problem. The authors propose the methods for the development of DTs used in the virtual commissioning of process control systems. They present the structure of the coiling section automation system and the structure of the DT imple-mented on the basis of programmable logic controllers (PLC). The authors provide the specifications for the Siemens PLCs installed at each of the coiling machines and the coiling machine master controller. To develop the control systems for electric and hydraulic drives, it is recommended to use the Matlab Simulink software package. The authors provide temporal dependencies obtained using DTs and other similar oscillograph charts produced during the operation of the coiling machine that can help model the operation of the mechanisms in question. The results of their comparison show that the processes correspond to each other. Thus, the use of the developed DT to adjust the electrotechnical systems of rolling mills is reasoned. The accepted concept of making digital twins for the electrotechnical systems of rolling mill components is relevant and technically feasible

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