In this article the AGC (Automated Gauge Control) system, of a hot rolling mill is analyzed and different methods are described to improve its performance. The mill stretch compensation and other disturbances during the rolling process are ... A Control Method for Improvement in the Tandem Hot Metal Strip Rolling Process. By John Pittner.

بیشتر

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

بیشتر

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 ...

بیشتر

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 ...

بیشتر

4 Quality-relevant fault monitoring on hot strip mill process 4.1 Process description. Hot strip mill process is an extremely complex industrial production process. Improving the quality of products can bring higher economic and social benefits for the factory. A schematic layout of the hot strip mill is illustrated in Fig. 1.

بیشتر

Principle and fault of hydraulic system for side guide ... 21/7/2021 The side guide device of the coiler in the main rolling line of a hot strip mill is used to prevent the deviation of the strip, align the strip with the rolling line, and lead it into the underground coiler.

بیشتر

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 …

بیشتر

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 ...

بیشتر

ment studies of a new AGC system. Then, application of the AGC simulator was expanded to the AGC for a single-stand cold rolling mill and the automatic elongation control (AEC) for a skin pass mill, and these applications led to studies of product dimension control (thickness and elongation) for various other sheet rolling mills of the company.

بیشتر

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.

بیشتر

Abstract： Steel strip are widely used in many fields such as automobile, building,communication and house appliance, etc. The quality of strip is judged by itsgeometry, mechanical properties and surface precision. Satisfactorydimensional accuracy in both width and gauge control have been obtainedfrom the application of the fast response hydraulic AWC and AGC …

بیشتر

The invention provides a hot rolling mill AGC system and a rolling control method thereof, belongs to the field of hot rolling mill AGC control and aims at solving the problem that at present, the hot rolling mill AGC system is low in control accuracy, insensitive in reaction and low in plate thickness control accuracy and influences constant pressure of a device.

بیشتر

The vibration frequency for the hot rolling mill in general is 10-70 Hz. As a result, the vibration increases with mill modulus control AGC gain for the large sensitivity frequency range of hot rolling mills. For these frequencies, the mill modulus control gain can be decreased to relieve mill vibration. 5.

بیشتر

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.

بیشتر

AGC 4-hi rolling mill control accuracy, especially suitable for high precision cold-rolled strip production. Production line process Front coiler→(Unloading car)→Machine front device→ 4-hi main rolling mil→ Machine after the device→After the coiler (Unloading car)→according demands to arrange the uncoiler, Starting straightening ...

بیشتر

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.

بیشتر

According to the virtual model fitted by true measured parameters, the Smith predictor in the monitor AGC was applied to predict the gauge error in the finishing mill and used this gauge error to control the strip rolling mill.

بیشتر

DOI: 10.4236/ENG.2014.61005 Corpus ID: 30768077. Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network @article{Hameed2014StripTC, title={Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network}, author={Waleed Ishaq …

بیشتر

Hot-rolled steel: Hot-rolled steel is a steel that had roll-passed at a very high temperature, approximately more than 2000 degrees Fahrenheit which is above the recrystallization temperature for most steel types. The heat gives steel a workable starting form and makes it easier to shape. Hot rolling starts with a large long steel called billet ...

بیشتر

Definition of Rolling process: Rolling is defined as a process to form metals where the metal strip is pressed by two or multiple rollers, thus the uniform thickness is formed. To do this, the temperature is essential. There are two types of processes. One …

بیشتر

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.

بیشتر

Rolling Mill Technology. Rolling Mill technology is a core competency of IMS. This is where IMS truly got its start, and remains at the heart of what we do. When it comes to Rolling knowledge and experience, IMS is a world leader. IMS was one of the first companies to pioneer the application of PLC systems to all aspects of rolling mill control.

بیشتر

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 …

بیشتر

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.

بیشتر

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

بیشتر

This paper first introduces the principle of AGC and conventional AGC in Hot Strip Mill (HSM). A linearized and discretized state-space model used for rolling force and thickness control is obtained by using recursive squares method. A data fusion algorithm based on Kalman filter is presented. For hot strip systems with complex multi-variables, an asynchronous fusion …

بیشتر

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...

بیشتر

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 …

بیشتر

【】 Rolling technique process needs powerful technical support,but control level of rolling technique has reached a turning point at present,Which means the control effect based on the traditional control theory has reached the limit and Some of the key issues faced have not been completely resolved.Therefore,it is very necessary to ...

بیشتر

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]

بیشتر