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Hot Rolling Mill Hydraulic Gap Control (HGC) thickness control improvement
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.
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Principles and Applications of Metal Rolling - Cambridge
3.2.7 Cold rolling of sheet, strip and foil 146 4. Rolling Equipment and Systems 168 4.1 Mill Stand Components and Mechanisms 168 4.1.1 Rolling mill rolls 169 4.1.2 Roll neck bearings 186 4.1.3 Roll chocks 197 4.1.4 Mill housings 201 4.1.5 Mechanisms for roll adjustment and roll balance 205 4.1.6 Roll change device 217
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Coupling vibration model for hot rolling mills and its application ...
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.
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Application of MN-AGC based on intelligent control in continuous hot ...
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 controller parameters. The practical application results have shown the effectiveness of this ...
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Design of a robust thickness controller for a single-stand cold rolling ...
We derive a mathematical model of a single-stand cold rolling mill and design control systems to improve the thickness precision while maintaining prescribed tension for the strip. On the basis of a linearized model of the rolling mill system, we propose a thickness controller using an internal model control (IMC) structure which effectively rejects periodic disturbances. We also discuss how ...
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Looper and tension control in hot rolling mills: A survey
however this control also has some restrictions: (i) it can be applied to the tension set-up of finishing mills but not to on-line tension control; (ii) its application is restricted to thinner strips because tension does not have a a dominant affect on thickness for thick strips and (iii) it can be used for thickness control, but not for pure .
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Research on Mill Modulus Control of Strip Rolling AGC Systems
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...
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Copper Strip Rolling Mill on sales - Quality Copper Strip Rolling Mill ...
8000KN Automatic Temper Rolling Mill 1450mm AGC Screw Down Dry Type. 1400mm Stainless Steel Temper Rolling Mill Dry Type Siemens High Speed. Tandem Rolling Mill. Electric Tandem Rolling Mill Continuous 700mm 5 Stand Carbon Steel AGC. 4 Stand Tandem Rolling Mill, Carbon Steel Strip Continuous Rolling Mill
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Research and Application on Spring Model of Hot Strip Mill
Research and Application on Spring Model of Hot Strip Mill Abstract: 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.
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Hot Strip Rolling Mill manufacturers & suppliers - Made-in-China
China Hot Strip Rolling Mill manufacturers - Select 2022 high quality Hot Strip Rolling Mill products in best price from certified Chinese Production Line, Roller Machine suppliers, wholesalers and factory on Made-in-China ... Application : Metal Recycling Machine, Metal Cutting Machine, Metal Straightening Machinery, Metal Spinning ...
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Distributed Consensus Control for Automatic Gauge Control of Hot Strip ...
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
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PLTCM at Ternium Mexico: A Blueprint for Excellence - Metals Magazine
Mass flow AGC measures the actual running speed of the strip with laser speed meters installed at the exit of stands No. 1 through No. 5 and feeds back the measured data for gauge control. This method helps increase accuracy of gauge control, particularly in the acceleration and deceleration phases.
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Report on Best Available Techniques (BAT) in the ... - Umweltbundesamt
Report on Best Available Techniques (BAT) in the German Ferrous Metals Processing Industry FINAL DRAFT Deutsch-Französisches Institut für Umweltforschung (DFIU)
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Adjusting Rolling Speed and Thickness to Help Ensure Metal Strip ...
3-20 mm. 0.100 mm. Rolling speeds (meters per min) ~ 100. ~1000. ~2000. Automatic Gauge Control (AGC) 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.. Some of the key AGC input parameters are speed and tension.
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Research on Intelligence of AGC System in Hot Strip Mill Xibang Zhang1 ...
The SIEMENS CFC program was used for fuzzy MN-AGC function development, to solve the problem that the original Siemens AGC gain coefficient is single. After application, the strip thickness control precision has been further improved. 1. Introduction Thickness accuracy is the most important indicator of hot rolled strip.
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Hot Rolling Mills | Products & Suppliers | Engineering360 - GlobalSpec
Description: for the hot rolling of steel strip. Rollshield HM-600, Rollshield HM-575, and Rollshield 300 can be used on all stands of the finishing train of hot strip mills. Rollshield HM-575 can also be used on roughing stands and for all work rolls, including nickel grain, high Function / Application: Lubricant, Metal Forming
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Figure 3 from Thick unevenness compensation in a hot rolling mill ...
Fig. 3. The hidraulic AGC actuator: the AGC reference zr feeds both hydraulic positioning systems (north and south) with the added uneven compensation ztilting . The stand controller tracks this reference by means of a servovalve. - "Thick unevenness compensation in a hot rolling mill having automatic gage control"
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Research on vertical vibration of hot rolling mill under ... - Extrica
Drawing of rolling mill under combined excitation of hydraulic reduction and strip steel From Fig. 8 we can see that the rolls and the AGC cylinder is acted by the strip thickness difference excitation and the hydraulic excitation.
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(PDF) Hot rolling mill hydraulic gap control (HGC ... - ResearchGate
With regard to the flat rolling process, automatic gauge control technology has been widely adopted to create real-time adjustments of the roll gap in accordance with the feedback of the workpiece...
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Distributed Consensus Control for Automatic Gauge Control of Hot Strip ...
Mar 30, 2021Y. 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
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Adaptive feedforward thickness control in hot strip rolling with oil ...
Oct 1, 2020This might affect the performance of several (linear) control loops. In particular, it is well known that the commonly used automatic gauge controller (AGC) only has a limited bandwidth due to stability reasons, see, e. g., Bilkhu (2010) and Prinz et al. (2019), and thus is not able to (dynamically) reject these disturbances.
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Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity ...
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.
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Adaptive threading strategy based on rolling characteristics analysis ...
Algorithm design and application of novel GM-AGC based on mill stretch characteristic curve [J]. Journal of Central South University, 2014, 21(3): 942-947. Article Google Scholar ... EVANS P. Mathematical modelling of mill set-up in hot strip rolling of high strength steels [J]. Journal of Materials Processing Technology, 1998, 80/81: 320 ...
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Algorithm design and application of novel GM-AGC based on mill stretch ...
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.
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Research and application of the feedforward-AGC system in hot strip ...
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 ...
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Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity ...
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.
WhatsApp:+8617329420102Rolling Mill - University of Central Florida
Project Summary. The rolling of hot metal strip in a tandem finishing mill is an important industrial manufacturing process that has considerable implications related to the health of the US economy. However, at present the US competitive position in the world market of rolled metal products remains seriously degraded.
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Automation and Thickness Control in Hot Strip Mill - IspatGuru
Oct 16, 2020The 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.
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cold rolling mill used machine for sale
Location:: 61381 FRIEDRICHSDORF. Qty. 1 Second-hand complete 12-Hi reversing cold rolling mill incl. sand blast line Mfc.: Type: 12-Hi reversing Built: 1986 Strip width: 900 - 1250 mm Thickness: Entry: 3.2 mm Exit: 0.4 mm Rolling speed: 120/300 m/min.
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Improvement and Application of Automatic Gauge Control System in Hot ...
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...
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US4898012A - Roll bite gauge and profile measurement system for rolling ...
A rolling mill for rolling strip in which one of its rolls serves both as a mill roll and as a gauge and/or profile measuring roll. The one roll has an outer sleeve for deflection under the rolling force and an internal stationary member for carrying a number of axially supported sensors for measuring the deflection of the sleeve and the rolling force to which the sleeve is subject, and ...
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Shape and Gauge Control of Strip in a Cold Rolling Mill
Oct 6, 2020in 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 .
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Improvement and application of Automatic Gauge Control system in 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.
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Application of neural-network for improving accuracy of roll-force ...
In real-time control stage, the automatic gauge controller (AGC) controls the roll gap to meet the target thickness for the strip. Fig. 3shows thickness error signal of a strip from the thickness sensor which is normally located in the delivery side of the last stand.
WhatsApp:+8617329420102Hot strip mill for steel - SMS group
The X-Roll® hot strip mill from SMS group is an all-round talent in hot strip production. It is the proper solution for ultra-thin gauges up to thick gauges for all steel grades incl. LC, ULC, high strength grades, API grades. ... Our hot rolling mills are capable of producing flat steel from thin gauges of 1.2 mm to high-strength steels up to ...
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Research of Smith Monitor AGC Based on Active Disturbance Rejection ...
Research and Application on Spring Model of Hot Strip Mill p.61. Application of Probabilistic Neural Network in the Rolling Rhythm Evaluation of Hot Strip Mill ... 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 ...
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Coupling vibration model for hot rolling mills and its application ...
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. Rolling mill vibration is observed to gradually be enhanced with increasing mill ...
WhatsApp:+8617329420102
Fast X-ray Gauging for Flat Metal Manufacture - Analyzing Metals
Thus a mill with AGC requires a high speed gauge. So what is a high speed gauge? This depends on the application. There are a range of high speed gauging options to suit a variety of applications. Single point X-ray gauges (for hot or cold mills) using photo-multiplier sensors can have response times as low as one millisecond.
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[PDF] Optimization-based feedforward control of the strip thickness ...
In the metallurgical industry, hydraulic automatic gauge control (HAGC) is a core mechanism for thickness control of plates used in the rolling process. The stability of the HAGC system's kernel. 23 PDF View 1 excerpt, cites background Asymmetric hydrodynamic roll gap model and its experimental validation M. Müller, A. Steinboeck, +5 authors
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