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with the implementation of a roughing mill with edge mill. The figure 2 shows the hot strip line, with the current and future equipments. Figure 2. Gerdau Ouro Branco Hot Strip Line. 1.2 Process Simulators The automated process control of a Hot Strip Mill, one of the most complex cases in the area of metal forming, is done at
In this paper, hardware-in-the loop-simulation(HILS) simulator for steering control is developed. The simulator describes lateral movement of the strip in hot strip finishing mill. The simulator include strip dynamics, mill model, mill motor and AGC controllers. The factors considered for strip dynamics are initial off-center and wedge difference. The wedge is realized using the expansion of ...
2. Details of simulator 2.1 Outline of calculation methods This simulator calculates the rolling loads and roll deflection of cluster rolling mills; a 4-high mill, a 6Hi X type mill and a 10Hi X type mill. Figure 1 shows the mills used for calculation. The rolling mills have the backup rolls (BUR), intermediate rolls (IMR) and work rolls (WR ...
The steel processing plant is located in Calvert, Alabama, about 35 miles north of Mobile. Purchased by ArcelorMittal and NSC in 2014, the plant has served the North American market since 2010 with the capacity to produce 5.3 million tons of flat-rolled carbon steel products annually. AM/NS Calvert is recognized as one of the most advanced ...
the finishing mill stands of a hot rolling mill, the strip is cooled by the cooling equipment of a run out table (ROT) at a cooling rate and ... Fig. 2 Consistent shape prediction simulator for hot-rolled steel strip. NIPPON STEEL TECHNICAL REPORT No. 89 January 2004 - 45 - boundary condition of Equation (2) for either water cooling or air ...
Hot strip mills (HSM) are a key part of HSLA steel production. A typical, semi-continuous HSM consists of the following units: reheat furnace, roughing stand, transfer table, coilbox, finishing...
In this paper, hardware-in-the loop-simulation(HILS) simulator for steering control is developed. The simulator describes lateral movement of the strip in hot strip finishing mill. The simulator include strip dynamics, mill model, mill motor and AGC controllers. The factors considered for strip dynamics are initial off-center and wedge difference.
An additional torque compensation algorithm is proposed to improve the shape of the strip to be coiled. The simulation environment permits the coiling process to be estimated offline, using the actual system parameters necessary for successful coiling. ... Download PDF. Download PDF. Published: ... Kuszaj, A. M., "Hot Strip Mill Downcoiler ...
RECENT TRENDS IN HOT STRIP ROUGHING MILLS: HIGH CHROMIUM STEEL VERSUS SEMI-HSS1 Jacqueline Lecomte-Beckers 2 T. Jerome Tchuindjang 2 Mario Sinnaeve 3 Roger Ernst 3 Abstract Two alloys grades for work rolls used in the roughing stand of Hot Strip Mill (HSM) are compared. The first grade known as High Chromium Steel (HCS) is presently the most
Dunkirk hot strip mill. This modernization measure ensures the operational reliability of the drive train, prepares the mill for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal's hot strip mill in Dunkirk, France.
This paper deals with the development of a simulator that generates the appropriate signals to test and validate high performance monitoring systems for hot strip mills under a controlled environment. The paper begins with an introduction to the model and its objectives. Next a presentation of the physical installation is done.
Temperature Model and Its Application in Hot Strip Rolling.Steel Rolling, 2004,3:34-37. [3] LiuYan, SunYiKang and GuanKeZhi: On Temperature Model for Finishing Stands in Hot Strip Mill of WuHan Iron and Steel CO., IRON AND STEEL, 2004,3:34-37. [4] SunYiKang: The Model of Hot Strip Mill and Control. Beijing: Metallurgical Industry Press, 2007:38-44.
The main components of the X-Roll®hot strip mill are a slab sizing press, one two- high and one four-high roughing stand, each with an edging stand at the entry side, seven finishing stands, the laminar strip-cooling section and three down- coilers. The hot strip mill operates with the X-Pact®automation system.
The frame of the tension adjusting system is given and the coiler control system hardware is designed and the system is designed scientifically with steady control and meets demand of the market. Aimed at the complex demand of hot strip rolling mill in practicing, the configuration of the coiler and the technological process is analyzed. The arithmetic of coiling tension and the control ...
IHI installed its first slab-width sizing press in the hot strip mill at the Kashima Works of Sumitomo Metal Industries in April 1985. (2) In the past 20 years since the first installation, the installation of a slab-width sizing press at the exit of the heating furnace of a hot strip mill line by revamping
The short stroked control model has been used in the Qiangang 2250mm hot strip rolling for all kinds of strips. The width accuracy is increased from 98.15% to 98.50%, and the disqualification caused by the width defects of head and tail reduced by 70%. V. CONCLUSIONS The strip head and tail defects can be resolved by the short stroke control model.
strip width z a aspect ratio 1. Introduction A hot strip mill rolls cast steel slabs into thin sheets. A typical hot strip mill facility consists of, in written order, the following units: reheat furnace, roughing mill, transfer table, coilbox, crop shear, finishing mill, runout table and coiler. A layout of the plant is given in Fig. 1.
U. Muhin et alii, Frattura ed Integrità Strutturale, 37 (2016) 305-311; DOI: 10.3221/IGF-ESIS.37.40 307 bAr 0.009 14.5213, nAr 0.018 9.2933, where: tj - metal temperature at the collecting roller table in the j-th time, °C; Ar3 and Ar1 - the critical point, °C. Ar1 and Ar3 temperature, depending on the chemical composition of steel and the cooling rate can be described by the
PDF | The Lackenby Coil Plate Mill is a large-scale steel plant on Teeside. Control of the rolling process is complicated by the interactions along the... | Find, read and cite all the research ...
The INTEG Hot Strip Mill Model (HSMM) is an off-line, PC-based model that is capable of simulating steel rolled on a hot strip mill or plate mill [2]. The model calculates the temperature evolution, rolling forces, microstructure evolution and final mechanical properties.
A Parallel Hot Strip Mill Simulator for Testing Embedded Real-time Monitoring Systems Daniel Garcia "1, Francisco Sus 1, Javier Garcia 1, Miguel Cuervo 1, Jos~ Maria Ldpez 1, Faustino Obeso 2, Manuel Tarrio 2, Luis Loredo 2 ... which a hot strip mill would generate during the lamination process of a strip. Figure 1 presents the main signals ...
Page 1 of 8 2013-METC-451 Control of the Tandem Hot Strip Mill under Expanded Uncertainties and Disturbances John Pittner Marwan A. Simaan Senior Member, IEEE Fellow, IEEE University of Pittsburgh University of Central Florida Department of Electrical and Computer College of Engineering and Computer Science Engineering Orlando, FL 32816, USA Pittsburgh, PA 15260, USA [email protected] jrpst16 ...
Nov 15, 2016· Simulation of Edge Defects Behavior of Slabs in the Sizing Press and Roughing Mill of a Hot Strip Mill. Farzad Foadian. Research Assistant, Institute of Metallurgy, Clausthal University of Technology, 38678 Clausthal‐Zellerfeld, Germany ... View the article PDF and any associated supplements and figures for a period of 48 hours.
The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process.
The work rolls in the finishing stands of any hot strip mill (HSM) experiences thermal shock owing to changes in temperature from initial boundary conditions. ... Simulation of thermal history of work rolls of finishing stand in hot strip mill: a numerical approach. S. Sikdar & S. John. Pages 493-499 ... Get access /doi/pdf/10.1179 ...
A looper is an uplifted device, which is always installed between adjacent stands in a hot strip finishing mill. A virtual looper system incorporating powerful computation capability of digital computers becomes an efficient and cost-effective tool for controller design and system analysis of this complicated and gigantic system. Accurate simulation of the looper system can not only restore ...
In this study, a combined method to simulate the sheet snaking by the rigid-plastic FEM and to analyze the sheet buckling by the elementary theory of buckling was proposed. First, the method in...
Abstract: In order to fully understand dynamic behavior of the thickness variation and conduct off-line process tuning, a dynamic simulator for the feedforward Automatic Gauge Control (AGC) for a hot strip finishing mill in China Steel Corporation is developed.
G. M. MENDEZ ET AL: TEMPERATURE PREDICTION IN HOT STRIP MILL BARS… I. J. of SIMULATION Vol. 6 No 9 34 ISSN 1473-804x online, 1473-8031 print contributions are highlighted in Section 2 while Section 3 provides the basic fundamentals of type-2 fuzzy. Section 4 presents the proposed hybrid learning algorithm. Section 5 contains applications
Hot Strip Mill From: Automotive Steels, 2017 Add to Mendeley Download as PDF About this page History of Hot Strip Mills1 John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 2.1 Hot Strip Mill Evolution Hot strip mills have evolved in various steps from original tinplate and sheet rolling mills.
Shape setup model (SSM) plays a critical role to achieve satisfactory precision of strip shape in hot strip mill process (HSMP). However, for the design of shape model, the lack of systematic shape theory restricts the high accuracy of strip shape. In this paper, the procedure of SSM will be generally introduced and practically demonstrated with a real HSMP producing system. The mechanism of ...
ISIJ International. Vol. 36 (1996). No. 5, pp. 553-562 Modeling Hot Strip and Simulation of Mill Hydraulic GapControl System in a Prodlp BHOWALand S. K. MUKHERJEE1) Automation Division. TheTata lron and Steel Co., Ltd., Jamshedpur, India 831001 1)Departmentof Electrical Engineering, Regional Institute of Technology. Jamshedpur,. (Received on July 26. 1995.• accepted in final form on January ...
Abstract. Equations are derived for the normal roll pressure, specific roll load and torque in hot rolling mills, using the condition for plastic deformation in rolling derived by Orowan, together with von Kármán's equation of equilibrium. Although applying strictly to the rolling of ideal plastic-rigid materials, these equations may be ...
General Aspects of Roll Cooling for Hot and Cold Rolling Mills