application of an agc in hot strip rolling mills

You may also like

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

Aug 01, 1981· Flatnes~ Control System for Hot Strip Mills Effect on Automatic Gauge Control Automatic gauge control (AGC) of final stand of finishing mill had not been used before flatness control was developed. The main reason is that when AGC of final stand is activated, the variation in rolling force injures flatness of the strip.

Iterative Learning Control with an Improved Internal Model ...

Measures strip and sheet temperature to efficiently set up the rolling mill to match the steel's temperature. These sensors also detect the presence of hot metal to accurately time the roll stand operation for maximum efficiency. LumaSense IS 320 Pyrometer, 150C TO 1200C and LumaSense IGA 320/23, 200C TO 1800C were utilized.

Rolling of steel in Hot Strip Mill – IspatGuru

Nov 12, 2013· In rolling mill, the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness, the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls, the exit thickness deviates periodically. In this paper, we design PI controller in outer loop for the strip exit thickness while PD controller is ...

Application of Hot Rolling Lubrication on a Reversing Coil ...

In the metals industry, tandem hot strip rolling mills are used for rolling out thick semi- nished products, e.g., slabs, to thinner at products. The product, which is often referred to as strip, is clamped in each mill stand of the rolling mill train (cf. Fig. 1). As longitudinal tensile stresses in the strip have a signi cant in uence on the

Hot Strip Mill and Cold Rolling Mill | Industry ...

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.

Flatness Control System for Hot Strip Mills - ScienceDirect

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 on Mill Modulus Control of Strip Rolling AGC ...

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.

Hot Strip Mill Application - Thermo Kinetics

ity and enhancing product quality. Hot strip mills began to apply the roll lubrication technology. Past studies reveal that roll lubrication can reduce the mill separating force/torque5 and the tertiary scale thickness.6 For a 4-high hot rolling mill, roll lubrication occurs …

How does it work: hot-strip rolling mill - YouTube

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 ...

Control of Strip Tension in a Rolling Mill Based on ...

The Hot Finish mill forms the strip to the final dimension. ... is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill to control thickness to high tolerances.. ... real-time measurements that help meet specifications of various applications while maximizing ...

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

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 ...

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

Download Citation | Application on neural PID control of MN-AGC in continuous hot rolling | It is always primary object to improve gauge control accuracy in hot strip mills. Limitation based on ...

Flatness Control System for Hot Strip Mills - ScienceDirect

Mar 31, 2015· ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hot-strip rolling mill in Duisburg. The animation shows how it all works.

Improvement and application of Automatic Gauge Control ...

Aug 01, 1981· Flatnes~ Control System for Hot Strip Mills Effect on Automatic Gauge Control Automatic gauge control (AGC) of final stand of finishing mill had not been used before flatness control was developed. The main reason is that when AGC of final stand is activated, the variation in rolling force injures flatness of the strip.

CNB - Automatic gauge control (AGC) self-adaptive ...

In the metals industry, tandem hot strip rolling mills are used for rolling out thick semi- nished products, e.g., slabs, to thinner at products. The product, which is often referred to as strip, is clamped in each mill stand of the rolling mill train (cf. Fig. 1). As longitudinal tensile stresses in the strip have a signi cant in uence on the

Control of Strip Tension in a Rolling Mill Based on ...

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. Products are used in various applications such as for ...

Application on neural PID control of MN-AGC in continuous ...

Jun 27, 2008· 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 the compensating coefficient of rolling efficiency, which was deduced in detail by some inferential reasoning formulas.

Improvement and application of Automatic Gauge 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 ...

Hot Rolling Mills | TMEIC

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.

Highest performing Hot Strip Mills | Primetals Technologies

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.

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

Hot rolling. This process stretches a slab into a strip. The slab is reheated to approximately 1250°C and rolled in hot conditions. The resultant strip steel is wound into a roll like toilet paper (hot coil). Chains for lifting; Toughrollers; Conveyor chains for conveying semi-finished products

CNB - Automatic gauge control (AGC) self-adaptive ...

A new feedforward control approach for the thickness prole of the strip in a tandem hot rolling mill is developed. In industry, the automatic gauge control (AGC) concept is widely used for thickness control. The AGC has the disad-vantage that it does not consider known disturbances from upstream entities. This is why a number of disturbance

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

The application at each roll mill required a set of two LSV's, one located on either side of the mill. The combination measures strip entry and exit speed for determining elongation or for mass flow calculations. One of the 4-High rolling mills is a reversing mill so the strip could be moving in either direction.

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

Waterbury Farrel Automatic Gauge Control (AGC) Systems ensure close-tolerance strip at the push of a button. The system automatically maintains extremely tight gauge tolerances as the strip passes through the mill at up to 1,000 meters per minute. The Waterbury Farrel patented AGC monitors strip gauge and corrects any variation within milliseconds.

Application on neural PID control of MN-AGC in continuous ...

The invention relates to an automatic gauge control (AGC) self-adaptive control method for a hot rolling mill, wherein the problem, which cannot be solved by an AGC setting model, that thickness control precision of several strip steel heads before changing a specification during a rolling procedure is not high is solved. The technical scheme of the invention is that the AGC self-adaptive ...