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Constant tension control is an important factor of hot coiling quality control. The most important standard of coil quality is control accuracy which can realize automatic constant tension. This duces article introthat the de-sign of the control system of strip coiling has universal significance. Due to its system to choose reasonable core
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@article{osti_795009, title = {AISI/DOE Advanced Process Control Program Vol. 3 of 6 Microstructure Engineering in Hot Strip Mills, Part 1 of 2: Integrated Mathematical Model}, author = {Brimacombe, J K and Samarasekera, I V and Hawbolt, E B and Meadowcroft, T R and Militzer, M and Pool, W J and Jin, D Q}, abstractNote = {This report describes the work of developing an integrated …
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In this article, a robust steering control design is proposed in order to guarantee the stability of a hot strip mill and improve its performances. The rolling process consists in crushing a metal strip between some rolls for obtaining a product with constant and desired thickness. The quality of the rolled products and the safety of the production process are linked to the lateral movement of ...
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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 process is introduced. The frame of the tension adjusting system is given. The …
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This data sheet serves as an introduction to hot rolled coil produced at ArcelorMittal South Africa. ArcelorMittal South Africa's Hot Strip Mill products normally range in thickness from 1,4mm, to 16mm and in width from 800 mm to 1 925 mm. Material may …
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Discrete Silding Mode Control of Hot Strip Mill. Author links open overlay panel Fukoku Oh Kenzo Nonami Kazuro Tsuda Hiroshi Fukoku Oh Kenzo Nonami Kazuro Tsuda Hiroshi
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In the process of hot strip rolling, accurate and efficient shape process control system is an important factor to ensure strip with good shape. This paper, based on advanced control concept and optimization mathematical model, aimed at Jingtang 1580 hot strip rolling project, developed advanced shape control system. Among them, the HPCS process control...
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2 li fy 2009 automatic control and application of hot rolled plate coiling machine mechanical and electrical engineer in chinese 3 huang y 2008 designing of hot strip rolling mill control system based on plc electrical transmission 38 56 59 in chinese 4 yu cz 2009 hot rolling coiler tension control.
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Hot Strip Mill Process Modeling Gekgenoegbe. Microstructure Engineering in Hot Strip Mills Part 1 of 2 These developed models have been integrated into the HotStrip Mill Model HSMM which simulates the hot strip rolling mills and predicts the mechanical properties of hotrolled products The HSMM model has been developed by the University of British ColumbiaCanada as a part of project on the ...
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The hot testing system consists of a water-cooled testing head, testing electronics and various software tools that together form a comprehensive, fully automated system. It can be fully integrated in the mill control network. 4.1 Water-Cooled Test Head The sensor is a robust, water-cooled test head through which the hot material passes
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Process control system, profile and flatness, hot strip mill. Abstract: In the process of hot strip rolling, accurate and efficient shape process control system is an important factor to ensure strip with good shape. This paper, based on advanced control concept and
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The Hot Strip Mill Model (HSMM) is an off-line, PC based software originally developed by the University of British Columbia (UBC) and the National Institute of Standards and Technology (NIST) under the AISI/DOE Advanced Process Control Program. The HSMM was developed to predict the temperatures, deformations, microstructure evolution and ...
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@article{osti_794984, title = {AISI/DOE Advanced Process Control Program Vol. 3 of 6: MICROSTRUCTURAL ENGINEERING IN HOT-STRIP MILLS Part 2 of 2: Constitutive Behavior Modeling of Steels Under Hot-Rolling Conditions}, author = {Cheng, Yi-Wen and Purtscher, Patrick}, abstractNote = {This report describes the development of models for predicting (1) constitutive behaviors and (2) …
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These strategies are well known and are described, for example, in "Automatic Shape Control-- Hoogoven's 88--In. Hot Strip Mill" by F. Hollander and A. G. Reinen, Iron and Steel Engineer, April, 1976. Strip flatness control will be improved where the rolling force at each stand is maintained more nearly constant throughout the strip length.
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Process Control in Hot Strip Mill: Estimated energy savings based on reducing rejects from 1.5% to 0.2% was 9% of fuel use, or approximately 0.3 GJ/t-product (US EPA, 2010. p.27). Emissions are reduced by 15.1kg CO 2 /t-rolled steel.
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ble of a hot strip mill and a control process for precise cooling of the strips using the pyrom-eter. The new strip cooling process was developed and put into commercial practice at Kashima Works and is being expanded to other mills of the company. Technical Report UDC 621 . …
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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.
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Improved process control of the hot strip mill may lead to indirect energy savings through reduced product rejects, improved productivity, and reduced down time. The primary aim is to control the oxygen level, and hence optimize the combustion in the furnace, especially as the load of the furnace may vary over time. The savings depend on the load factor of the furnace and control strategies ...
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Control of Strip Tension in a Rolling Mill Based on Loopers and Impedance Control A. Steinboeck G. Mu hlberger A. Kugi Automation and Control Institute, Vienna University of Tec hnology, Gu hausstra e 27-29, 1040 Vienna, Austria (e-mail: [email protected]) Abstract: A mathematical model of a strip-looper system of a hot strip ...
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Request PDF | Development of cooling process control technique in hot strip mill | In order to ensure required mechanical properties of steel strip, various innovations in the cooling process ...
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are the basis for the control-system of the following pickling process to set up adequate process parameters in order to guarantee the required surface quality and maximal productivity. 2. The Evolution of Microstructure in the Hot Rolling Process The layout of the hot strip mill of voestalpine Stahl is shown in Fig. 1. Slabs
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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 process is introduced. The frame of the tension adjusting system is given. The coiler control system hardware is designed. The system is designed scientifically with steady control and meets demand of ...
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Strip steering is one of the most serious problems in the finishing mill in the hot strip rolling process. To improve steering control, a strip steering control system, which is based on sliding mode control and uses a steering observer, was designed and successfully applied to an actual plant.
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In the process of hot strip rolling, accurate and efficient shape process control system is an important factor to ensure strip with good shape. This paper, based on advanced control concept and optimization mathematical model, aimed at Jingtang 1580 hot strip rolling …
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hot strip mill. 3. Control of Metallurgical Processes The main goal of the metallurgical processes is to maintain constant properties of the intermediate products (sinter, pig iron, and steel immediately after blowing). This is done mainly by human decisions during planning the course of production (scheduling),
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stress experienced by the strip material in the roll gap [7,8]. That is, F Y wL = avg (5) where . w = width of the strip, R. is radius of work roll. 3.2. Output Thickness Equation . In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge,
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In this paper, a robust steering control is proposed as a means to guarantee the stability of a hot strip finishing mill and improve its performances. The aim of the rolling process is to obtain a metal strip which is uniform and at the desired thickness. The lateral movement of the strip may reduce the quality of the product and damage the rolls.
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Summary. Hot strip rolling mills are characterised by a process which has many interactions, is distributed with dominant transport delays and has a lack of …
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The complex control systems have been applied to hot rolling processes and, now, the control area covers the whole line. The process technology of hot strip mill has matured; however, the development of advanced control in this area is still active, for the reason that the demand to improve quality has become increasingly severe.
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