application of an agc in hot strip rolling mills

Research on Mill Modulus Control of Strip Rolling AGC ...

The novel GM-AGC system has been applied successfully in a hot strip mill, the application results show that the thickness control precision is improved significantly, with the novel GM-AGC system ...

A Multivariable and Multi-Objective Approach for the ...

narrow hot strip mill is here described. DOI: 10.1115/1.2361323 Keywords: hot strip rolling mills, multi-variable control, multi-objective control, dy-namic models 1 Introduction In this paper we report the results concerning the application of advanced multi-variable control techniques to hot strip mills HSM .

HOT STRIP MILL - mccet.com

the end-less rolling line of the hot strip mill. ... - Application of roller bearing for rotating and reciprocating parts - Optimized anti-buckling roller arrangement - Stop-and-go press to reduce the risk for production of a cambered slab 2. Pressing pattern ... Hydraulic AWC and AGC systems for Hot Rolling Mill

Strip Thickness Control of Cold Rolling Mill with Roll ...

Nov 12, 2013· been developed for hot or cold mill processes. The Brit-ish Iron and SteelResearch Association (B1SRA) AGC method based on the gaug meter principle and the feede forward AGC method using the delivery time of the strip have been widely utilized in steel rolling mills [3]. Strip products thickness precision is an important quality parameter.

The Complete Technology Book on Hot Rolling of Steel

Hot rolling mill thus helps in reducing the size of a metal thereby molding it into the desired form and shape. Rolling mills perform the function to reform the metal pieces such as billet and ingot whilst maintaining its well equipped micro structure into bar, wire, sheet, strip, and plate. Hot rolled products are frequently categorized

Research and Application on Spring Model of Hot Strip Mill ...

Spring model is important restrictive factors to improve the precision of AGC control system. To improve the accuracy of strip gauge control, Study on various influencing factors of spring model has important significance in rolling process. Therefore, using ABAQUS finite element software, this paper establishes the whole stand model of strip rolling.

Distributed Consensus Control for Automatic Gauge Control ...

Mar 30, 2021· Y. Zhong, S. Tan, and X. Xu, "Research and application of the feedforward AGC system in hot strip rolling mills," Journal of Northeastern University (Natural Science), vol. 30, no. 2, pp. 169–171, February 2009. Google Scholar [39]

Hot Rolling Mill Hydraulic Gap Control (HGC) thickness ...

P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement – 98 – Another way to determine the thermal expansion of the work roll is the modelling of the heat transfer between the work rolls and the strip. This depends on the roll speed, strip thickness, the properties of the strip, roll gap, contact time and cooling parameters.

Adaptive feedforward thickness control in hot strip ...

Oct 01, 2020· The application of oil lubrication in hot strip rolling has many advantages for the process, i. e., reduced roll force, reduced energy consumption, better strip surface quality, and reduced roll wear.On the other hand, oil lubrication may also induce severe disturbances for several control loops in a tandem hot rolling mill, which can reduce the final strip quality or might even jeopardize a ...

Flying Gauge Change Control for Hot Strip Finishing Mill ...

Jul 01, 1993· In cold strip mills, gauge change control systems use a mathematical model to select and change the settings as the thickness change point (spetial point) moves through the mill.ln hot strip finishing mills, however, there are many factors that make gauge control more difficult, and the process used in cold mills is not sufficient.

Algorithm design and application of novel GM-AGC based on ...

Mar 16, 2014· The novel GM-AGC system has been applied successfully in a hot strip mill, the application results show that the thickness control precision is improved significantly, with the novel GM-AGC system, over 98.6% of the strip thickness deviation of 3.0 mm class can be controlled within the target tolerances of ±20 μm.

Optimization of a Cold Rolling Mill - Thermo Fisher Scientific

maximum rolling speed of a cold or foil mill, 8 meters of strip is produced. It is easy to see why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1)

Narrow Strip Rolling Mill Division – HOT ROLLING MILL ...

Semi Continuous Hot Strip Mill which incorporates the latest proven technology and know-how available in the steel industry. Our experienced team of engineers and design has offered modern solutions that perfectly match the demands of the market.

Research on Mill Modulus Control of Strip Rolling AGC ...

Jun 01, 2007· Abstract: Recently, the accuracy of hot strip gauge is strictly demanded, and the strip thickness becomes the most important quality in hot strip rolling. In order to improve the quality of the hot strip gage and to reduce the strip thickness deviation, the automatic gauge control (AGC) system now is widely used in modern hot strip mills.

[PDF] Research and Application of Thickness Control ...

Thickness accuracy of plate production depends on Automatic Gauge Control (AGC) in the plate mill area. A typical modern thickness control system design and implementation of a steel plate mill is discussed together with the impact on the design of process models, available measurements, available control actuators and material properties. A highlevel software design approach provides the ...

Research on Mill Modulus Control of Strip Rolling AGC ...

Jun 01, 2007· Recently, the accuracy of hot strip gauge is strictly demanded, and the strip thickness becomes the most important quality in hot strip rolling. In order to improve the quality of the hot strip gage and to reduce the strip thickness deviation, the automatic gauge control (AGC) system now is widely used in modern hot strip mills. Mill modulus control (MMC) is one of important methods in AGC ...

Coupling vibration model for hot rolling mills and its ...

C OUPLING VIBRATION MODEL FOR HOT ROLLING MILLS AND ITS APPLICATION. JIMIN W U, X IAOQIANG Y AN ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1799 speed at entry and exit, respectively; ö 5, ö 6 and ö á are the strip entry angle, the strip exit angle and the neutral angle, respectively; R å is the roll speed; D Ö is the roll gap spacing along the

Research on Intelligence of AGC System in Hot Strip Mill ...

[3]. Z. X. Li and X. H. Liu, Research of the Gauge Control System for 2160 Hot Strip Mill at Shrugging, Metallurgical Industry Automation, 2010, 100-102. [4]. X. C. Zhang, Development and Application of AGC Control System for 1500mm Hot Continuous Rolling in …

Stability and Accuracy of Agc-Systems in Hot Strip Mills ...

Jan 01, 1983· INTRODUCTION Most hot strip mills are equipped with AGC-systems on the finishing stands. Installations vary from single stand to all stands AGC, hydraulical or electrical positioned. In most systems a feedback (monitor) control is available, in modern installations a …

Optimizing Strip Speed Measurement for AGC/Mass Flow and ...

4-high rolling mills used for reduction and skinpass at its Hagen, Germany, location. In this case, each mill uti-measurement. The application at each roll mill required a set of two LSVs, one located on either side of the mill. The combina-tion measures strip entry and exit speed for determining elongation or for mass flow calculations.

Research of Smith Monitor AGC Based on Active Disturbance ...

In response to the characteristics of large time delay, nonlinear, various disturbances in Monitor AGC system for cold rolling mill, a control strategy combining Smith predictor with Active Disturbance Rejection Control (ADRC) is proposed. Approximation ability of Extended State Observer (ESO) to estimate unknown parts of controlled plant model is promoted by model compensated ADRC.

Research on application of Smith predictor to monitor AGC ...

Jun 19, 2009· Research on application of Smith predictor to monitor AGC in hot strip rolling mills ... which has some negative effect on the control of strip thickness, so the monitor AGC was not a control system in time. According to the virtual model fitted by true measured parameters, the Smith predictor in the monitor AGC was applied to predict the gauge ...

Cold rolling technology for carbon - ANDRITZ

Inline temper mill For continuous galvanizing, 4-high CGL up to 220 Continuous annealing, and push-pickling CAL up to 450 lines. Hot skin pass mill For adjusting material and strip 4-high 400,000 – 900,000 up to 700 Discontinuous surface quality, improving strip latness and recoiling, dividing or inspection of coils

Main Features of a modern Hot Strip Mill – IspatGuru

Dec 22, 2013· Main Features of a modern Hot Strip Mill. satyendra; December 22, 2013; 0 Comments ; AGC, coiler, HGC. AWC. Coil box, Reheating furnace, Main Features of a modern Hot Strip Mill. The objective of a hot strip mill (HSM) is to reheat and roll thick slabs into thin strip …

The Complete Technology Book On Hot Rolling Of Steel by ...

[p]Hansen-and Bramfitt have found that, with respect to a Generation I hot strip mill: 1) the mechanical properties achieved off the mill are comparable with those of as-annealed dual-phase steels although the hot-rolled product differs structurally in being an aggregate of ferrite, martensite and granular bainite, 2) the optimum composi-tion ...

[PDF] Modelling and control of a hot rolling mill ...

In this paper, a real application of opti- mal control of a hot rolling mill is presented. It is used the state space model formulation in the minimization of the strip thickness variations. It is presented the simulation results of the control model, which is com- pared with industrial real data from process controled by traditional techniques. The results of the simula- tions lead to a less ...

Highest performing Hot Strip Mills | Primetals Technologies

The demand for hot rolled strip is growing in multiple ways. To remain competitive, new and existing mills must meet this challenge in the best possible way. The production of hot strip is a key element of steel production. Since close to half of all steel produced is hot-rolled to strip, mills require maximum throughput and availability ...

Automatic Gauge Control in Rolling Process Based on ...

Nov 24, 2014· S.-B. Tan, M.-W. Bao, and J.-C. Liu, "Research on application of smith predictor to monitor AGC in hot strip rolling mills," in Proceedings of the Chinese Control and Decision Conference (CCDC '09), pp. 4172–4175, Guilin, China, June 2009. View at: Publisher Site | Google Scholar

Technical Review UDC 621 . 771 : 621 . 783 : 621 . 892 ...

the endless hot strip rolling practical by minimizing the idle time. ... and then to the finishing mill stands of the continuous hot rolling mill of the Yawata Works, which was commissioned in 1982. ... Fig. 7 Improvement of gauge accuracy through application of absolute mode AGC Fig. 8 Result of automatic crown set-up control

Iterative Learning Control with an Improved Internal Model ...

Jan 22, 2016· The long time delay in the monitoring automatic gauge control (AGC) of strip rolling by a tandem hot mill adversely affects system stability. To solve this problem, internal model control (IMC) and iterative learning control were applied to a monitoring-AGC system. A mathematical model of the hydraulic gap control system was established focusing on the seventh stand of a 1450-mm tandem hot ...

VOL. 79/JUN. 1997

continuous hot-rolling mills in which strips are welded together to form an ... Unnamed hot-strip mill Rougher mill, finisher mill '96 Posco Pohang No. 3 Plate Mill (South Korea) Edger, finisher mill '97 ... /AGC F1/3 /AGC F6/7 /AGC FM roll change ROT & DC master No. 1/2 DC QOC Conveyer Simulator and backup

Application of MN-AGC based on intelligent control in ...

It is always primary object to improve gauge control accuracy in hot strip mills. Limitation based on conventional PID emerges when the controlled object is strong nonlinear, uncertain and multi-constrained features. BP-PID control strategy is introduced in MN-AGC for realizing finished combination of …

Research on application of Smith predictor to monitor AGC ...

Research on application of Smith predictor to monitor AGC in hot strip rolling mills

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