Application Of An Agc In Hot Strip Rolling Mills

Improvement and application of Automatic Gauge Control ...

Improvement and application of Automatic Gauge Control system in hot strip rolling mills. Abstract: Mill Modulus Control (MMC) is one of important methods on Automatic Gauge Control (AGC) systems of strip rolling mills. It would result in a slower adjusting speed of strip rolling gap to combine the former AGC system and MMC simply without changing ...

application of an agc in hot strip rolling mills

Applications Of Steel Strip Rolling Mill. Hot Rolling Mills TMEIC. Hot rolling mills roll heated steel, stainless, and aluminum slabs to make hot strip with a thickness of a few millimeters to over ten millimeters. Hot coils are shipped as they are, or moved to another operation and processed to cold rolled sheet, coated steel sheet, or steel pipe. Get Price. Improvement and application …

Research and application of the feedforward-AGC system …

Download Citation | Research and application of the feedforward-AGC system in hot strip rolling mills | Either RF-AGC or Mon-AGC of AGC (automatic gauge control) model to the 1580 hot strip ...

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

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...

Application and Research of New Monitor AGC in Hot Strip ...

A Monitor AGC control system is applied to a hot strip mill in a steel plant, due to some irrationality gain factors and the hysteresis of the Monitor AGC control output, the strip thickness deviation is large. This paper designs a new type Monitor AGC that includes two control methods:Integral type Monitor AGC and Smith's method Monitor AGC, they are...

Improvement and application of Automatic Gauge Control ...

Mill Modulus Control (MMC) is one of important methods on Automatic Gauge Control (AGC) systems of strip rolling mills. It would result in a slower adjusting speed of strip rolling gap to combine the former AGC system and MMC simply without changing the compensating coefficient of rolling efficiency, which was deduced in detail by some inferential reasoning formulas. A …

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

01/01/1983· Chapman & Hall. Wood, G.E. (1977). Mill modulus variations and hysteresis -their effect on hot strip mill AGC. Iron and Steel Engineer, January 1977, 65-71. Wright, H. (1978). Applications and Advantages of hydraulic AGC. Iron and Steel International, December 1978, 381-390. Zeltkalns, A. (1977). Force Sensing in rolling mills. Iron and Steel ...

Iterative Learning Control with an Improved Internal Model ...

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 ...

Shape and Gauge Control of Strip in a Cold Rolling Mill ...

In cold rolling mills (and in particular in tandem rolling mill) the thickness control i.e. the automatic gauge control (AGC) regulation is achieved with sophisticated controllers which need to take into account that loopers are not present (as in the case of hot strip mill) and hence the regulation activity of all the stands is to be coordinated in order to guarantee stability of the rolling …

Rolling Process: Working, Application, Defects, Type of ...

It is done by passing the strip of the metal between the rollers. This paper discussion will be made about the rolling process, the working principle of the rolling process along with that the working principle of the rolling mills. Then the types of rolling mills will be discussed. Apart from that, in this assessment rolling and its defects ...

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

01/01/1983· 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 feedforward system is included. A number of factors influence the accuracy and stability of …

Application of RBF-PID to MN-AGC in Hot Continuous …

It is always primary object to improve gauge control accuracy in hot strip mills. Limitation based on conventional PID is emerged when the controlled system is complex, nonlinear and time-variety. A new control strategy based on RBF-PID is introduced and has been applied in high nonlinear, time - varying hydraulic MN- AGC of 1700ASP The practical results have shown …

Research and Application of the Feedforward-AGC …

Either RF-AGC or Mon-AGC of AGC(automatic gauge control) model to the 1580 hot strip rolling mill belongs to a feedback control system.Time lag is therefore inevitable to the readjustment of rolling gap,thus resulting in the constraint on improving the strip gauge precision.The normal feedforward idea about tandem cold mills was introduced into hot strip rolling to develop a feedforward AGC ...

Algorithm design and application of novel GM-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, over 98.6% of the strip thickness deviation of 3.0 mm class can be controlled within the target tolerances of ±20 μm.

Iterative Learning Control with an Improved Internal Model ...

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 …

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

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 ...

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

If the required accuracy of hot rolling mills can be achieved, then in some cases, cold rolling is not even required, which can result in a radical decrease of production costs. The schematic structure of a typical aluminum hot reversing rolling mill can be seen in Figure 1. The aluminum slabs, which have to be rolled, are transported from a re-heat furnace via a roller table, then …

Shape and Gauge Control of Strip in a Cold Rolling Mill ...

In cold rolling mills (and in particular in tandem rolling mill) the thickness control i.e. the automatic gauge control (AGC) regulation is achieved with sophisticated controllers which need to take into account that loopers are not present (as in the case of hot strip mill) and hence the regulation activity of all the stands is to be coordinated in order to guarantee stability of the rolling …

Main Features of a modern Hot Strip Mill – IspatGuru

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 with a wide range of thickness. Because of its huge size and large investment ...

Hot Strip Mill - an overview | ScienceDirect Topics

John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 3.5 Friction and Wear. Work rolls in hot strip mills wear due to friction between the roll surface and hot strip. (Back-up rolls wear as well, but under pressure with elastic deformation, the friction is much less, except for the high work roll roughness in the last stand of a sheet rolling tandem cold mill).

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

01/01/1983· 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 feedforward system is included. A number of factors influence the accuracy and stability of …

Application of RBF-PID to MN-AGC in Hot Continuous …

It is always primary object to improve gauge control accuracy in hot strip mills. Limitation based on conventional PID is emerged when the controlled system is complex, nonlinear and time-variety. A new control strategy based on RBF-PID is introduced and has been applied in high nonlinear, time - varying hydraulic MN- AGC of 1700ASP The practical results have shown …

Algorithm design and application of novel GM-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, over 98.6% of the strip thickness deviation of 3.0 mm class can be controlled within the target tolerances of ±20 μm.

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

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 ...

Dynamic Simulation of AGC/LPC Synthetical System for …

A simulation of hot strip finishing mill automatic gauge control (AGC) system is built, which is divided into four modules such as rolling mill system, AGC module, looper system and strip model. The rolling mill system is built by mechanism modeling, the looper system and strip model are built by function modeling, and the AGC model is tried to use intelligent control of a multi-function AGC ...

An Expert PI Controller with Dead Time Compensation of ...

Monitor automatic gauge control (AGC) based on hydraulic roll gap control system is widely used in modern strip rolling mills [4–7]. In monitor AGC system, gauge meter is used to measure strip gauge derivation, which is installed at the delivery side of the finishing mill. The strip thickness can be controlled by adjusting the roll gap. Because of restriction of mill structure and requirement …

agc for temper mill - easy-rider-reisen.ch

application of an agc in hot strip rolling mills. TEMPER AND DCR MILLS After the reduction of the strip in the tandem cold mill and subsequent annealing, the double cold reduction mills (DCR mill) of Primetals Technologies further reduce the strip on the no. 1 stand and temper-roll it on the no. 2 stand, in …

Constrained dynamic matrix control strategy for a ...

In the hot strip rolling process, the performance of a monitoring system for automatic gauge control (MN-AGC) is influenced greatly by the model mismatch which is caused by the variation of model parameters values. A constrained dynamic matrix control (CDMC) strategy that includes a prediction model, rolling optimization, and feedback correction was used in the MN-AGC.

Application of predicted extrapolation control strategy in ...

Because conventional PID controller is difficult to solve the pure lag problem, so the technology of monitor AGC caused in hot strip rolling mills, the control strategy of predicted extrapolation data processing algorithm is put forward. It figures out stability and dynamic nature of system that the pure lag and programmed algorithm induce. The effect of predicted extrapolation algorithm is …

Highest performing Hot Strip Mills | Primetals …

Power cooling (Enhanced strip cooling system) Hot strip mills often reach their limits in terms of power and flexibility for production of advanced high strength steel grades (AHSS) such as API X80/X100, dual-phase, martensitic and complex-phase grades. For cooling and advanced “in-line” metallurgical treatment of new materials, Primetals Technologies developed “Power Cooling” …

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