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· 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.
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.
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.
· 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 .
Research on application of Smith predictor to monitor AGC in hot strip rolling mills
The optimized AGC system was applied successfully in a hot strip mill, and the practical application showed that the thickness of the strip steels with …
· 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 .
· 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.
· 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.
· 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 .
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.
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 …
· The automatic gauge control (AGC) system is provided in HSM for the purpose of achieving the desired thickness of the hot strip. It is the system for the regulation of the thickness. For its applications in HSM, the AGC requires strictly the acquisition of the stretch for each stand.
This process is vastly used in respect of any other rolling process. In this process, the metal is heated above the recrystallization temperature.In the hot working process, the metal is changing its grain structure because of the heat, now there were a new set of strain-free grains in the metal and this process needs less amount of force which correspondingly reduces the quality of the .
One of the main objectives in hot strip rolling is to produce strip which has a good flatness and shape profile. Control of the flatness profile involves use of actuators throughout the hot mill.
In this paper, we propose an effective mechanical-electrical-hydraulic-interfacial coupling vibration model for hot rolling mills and obtain a practical measure to relieve mill vibration. First, an experiment related to mill modulus control gain in automatic gauge control (AGC) is carried out during manufacturing.
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 .
AGC thickness control of rolling mill is a control system with time delay; traditional AGC control methods cannot get satisfying control performance [ 13, 14 ]. According to control theory, to cope with the time-delay problem, we can take the Smith predictor scheme.
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 …
In industry, typically, the automatic gauge controller (AGC) is used to control the exit thickness of the strip, see [4,5]. The AGC estimates the mean strip exit thickness at the considered mill stand based on the measured roll force using a (typically linear) mill-stretch model, which also captures the roll stack deection.
The MTG Achenbach rolling mills. Work roll One of the crucial parameters in achieving correct strip thickness during hot and cold rolling is the strip Get Price; Phipps Company: Rolling Mills Inventory. Oct 10, 2018 Hot Rolling Mills Rotary Flying Used 820mm 2-Hi Achenbach Cold Rolling Mill. Stock#: RM-418 Used 36" 2-Hi Aluminum Hot Rolling Mill.
1188 Fengliang Road,
Fengxian District,Shanghai
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