how to control eccentricity problem in hot rolling mill

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how to control eccentricity problem in hot rolling mill

how to control eccentricity problem in hot rolling mill

Flatness Control System of Cold Rolling Process with. shape control that has a closed loop of a shape roll and a rolling mill as shown in Fig 9 This has enabled high-speed and stable rolling without relying on operator skills 31 Shape analysis Figure 10 shows the concept of shape analysis The average rolling tension and the tension deviation for each rotor are determined

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How To Control Eccentricity Problem In Hot Rolling Mill

an overview of the hot finisher mill after the upgrade, and describes the new control technology and hot rolling pro-cess control system that were introduced. 2. GENERAL DESCRIPTION The hot rolling mill of the Fukui Works went into service in May, 1983 as a world-class facility, equipped with large rolling stands capable of producing wide

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how to control eccentricity problem in hot rolling mill

Unwind/rewind eccentricity control for rolling mills 6/3/1990 The cause of the problem is fourfold, i.e., cyclic disturbances are caused by (1) dimensional abnormalities (ovalness and eccentricity) of the coils, (2) a resonance condition resulting from a mass/spring system exhibited by the coil being connected to the mill via the strip of material being unwound or rewound,

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how to control eccentricity problem in hot rolling mill

2007 7 1 This paper considers some of the control issues in hot rolling mills Hence to set the context first we give a brief description of a typical process The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 mm Fig 1 shows

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how to control eccentricity problem in hot rolling mill

Active compensation of roll eccentricity in rolling mills. This paper is concerned with the active compensation of the roll eccentricity induced thickness of hot and cold rolling mills gauge control in

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how to control eccentricity problem in hot rolling mill

Upgrading of Hot Finishing Mill to 4-Stands, and The hot rolling mill of the Fukui Works went into service in Roll eccentricity elimination control PC1: problems in high-load rolling,

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how to control eccentricity problem in hot rolling mill

Strip Thickness Control of Cold Rolling Mill with Roll Nov 12, 2013 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].

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how to control eccentricity problem in hot rolling mill

ep0435595a2 thickness control system for a rolling mill . A rolling mill (32) has a hydraulic roll-gap control system (66) for setting the roll gap between two work rolls (3, 4) of the rolling mill and a mill modulus control unit (54) for supplying a correction signal (C p ) to the hydraulic roll-gap control system based on the difference between a reference rolling pressure and the actual

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how to control eccentricity problem in hot rolling mill

9th INTERNATIONAL ROLLING MILL ACADEMY isc ltd com. 9th INTERNATIONAL ROLLING MILL ACADEMY 5 9 November 2007 Glasgow Scotland The lectures will be given by leading international experts in hot and cold mill control systems As well as providing an in depth understanding of the theory they will also explain the practical issues of implementing rolling

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Roll Eccentricity Control for Strip Rolling Mills ScienceDirect

1987-7-1  The strip exit thickness h, is given by: h =S (F,W) + (S-So) + e (1) where S (F,W) is the elastic deformation of the stand components, W is the strip width, S is the rollgap position with respect to an arbitrary datum, So is a constant and e is the effective total eccentricity signal for the complete set of rolls in the mill.

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how to control eccentricity problem in hot rolling mill

2007 7 1 This paper considers some of the control issues in hot rolling mills Hence to set the context first we give a brief description of a typical process The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 mm Fig 1 shows

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how to control eccentricity problem in hot rolling mill

Unwind/rewind eccentricity control for rolling mills 6/3/1990 The cause of the problem is fourfold, i.e., cyclic disturbances are caused by (1) dimensional abnormalities (ovalness and eccentricity) of the coils, (2) a resonance condition resulting from a mass/spring system exhibited by the coil being connected to the mill via the strip of material being unwound or rewound,

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how to control eccentricity problem in hot rolling mill

Upgrading of Hot Finishing Mill to 4-Stands, and The hot rolling mill of the Fukui Works went into service in Roll eccentricity elimination control PC1: problems in high-load rolling,

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how to control eccentricity problem in hot rolling mill

2021-2-22  Roll Eccentricity Control for Strip Rolling Mills Typically, the number of backup roll cycles is as shown in Table I. TABLE 1 TYPICAL BACKUP ROLL CYCLES FOR DIFFERENT MILL TYPES MILL TYPE srAND PRODUCT NUMBER OF THICKNESS BACKUP ROLL (mm) CYCLES/PRODUCT Tandem cold mill First 0.3 100-400 Tandem hot mill First 2.5 10-25 Last

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how to control eccentricity problem in hot rolling mill

ep0435595a2 thickness control system for a rolling mill . A rolling mill (32) has a hydraulic roll-gap control system (66) for setting the roll gap between two work rolls (3, 4) of the rolling mill and a mill modulus control unit (54) for supplying a correction signal (C p ) to the hydraulic roll-gap control system based on the difference between a reference rolling pressure and the actual

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how to control eccentricity problem in hot rolling mill

9th INTERNATIONAL ROLLING MILL ACADEMY isc ltd com. 9th INTERNATIONAL ROLLING MILL ACADEMY 5 9 November 2007 Glasgow Scotland The lectures will be given by leading international experts in hot and cold mill control systems As well as providing an in depth understanding of the theory they will also explain the practical issues of implementing rolling

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how to control eccentricity problem in hot rolling mill

hot rolling mill roll eccentricity Cold Rolling Mill Thickness Control Using The Cascade-Correlation,Backup Roll Thickness gauge,Application of Dynamic Deadband Eccentricity Filter in GM-AGC,The problem of roll eccentricity has become one of important factors to affect the quality of strips as downstream industries require.

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How to control eccentricity problem in hot rolling mill

The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product

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Roll Eccentricity Control for Strip Rolling Mills ScienceDirect

1987-7-1  An in-depth review of the roll eccentricity control design problem is provided which encompasses a number of recent, novel, design contributions and i

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Hot Rolling Mill Roll Eccentricity tuinprojecten-verbist.be

2019-1-8  How To Control Eccentricity Problem In Hot Rolling Mill Roll eccentricity control with the force feed forward agc system.By francis wagner, manager rolling and mill automation.Abstract.The force feed forward fff system is the only hot strip mill agc system in the world today which does not incorporate the bisra principle for gage control.Instead, using a

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how to control eccentricity problem in hot rolling mill

hot rolling mill roll eccentricity Cold Rolling Mill Thickness Control Using The Cascade-Correlation,Backup Roll Thickness gauge,Application of Dynamic Deadband Eccentricity Filter in GM-AGC,The problem of roll eccentricity has become one of important factors to affect the quality of strips as downstream industries require.

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hot rolling mill roll eccentricity sebocomconstruction.co.za

how to control eccentricity problem in hot rolling mill. Rolling Mill Tutorial Before continuing make sure you have read Chapter 5 Another control problem besides the continuous caster arising in the steel industry is the control of the exit steel thickness in a rolling mill The diagram below shows the layout of a rolling mill with thick steel going in one side and thin steel coming out the

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how to control eccentricity problem in hot rolling mill

basic rollimg mills Grinding Mill China. 187 MTW Milling Machine 187 SCM Ultrafine Mill Complete Hot Rolling Mills Design Housingless Vertical Mill Stand Modelling and control of

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Rolling mill roll eccentricity control Kaiser Aluminum

The invention relates to the control of rolling mill backup roll eccentricity by combining the load carrying characteristics of rolling mill tapered roller bearing assemblies during rolling with prescribed levels of axial thrust to effect a controlled deflection of backup roll necks on a 4-high rolling mill or the like due to the selected thrust force applied axially to the ends or necks of

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Hot Rolling Mill Roll Eccentricity tuinprojecten-verbist.be

2019-1-8  How To Control Eccentricity Problem In Hot Rolling Mill Roll eccentricity control with the force feed forward agc system.By francis wagner, manager rolling and mill automation.Abstract.The force feed forward fff system is the only hot strip mill agc system in the world today which does not incorporate the bisra principle for gage control.Instead, using a

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Roll Eccentricity Control for Strip Rolling Mills ScienceDirect

1987-7-1  An in-depth review of the roll eccentricity control design problem is provided which encompasses a number of recent, novel, design contributions and i

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Position Control and Active Eccentricity Compensation in

The control concept comprises a plug-in controller based on the projection theorem in a Hilbert space for the active compensation of roll eccentricity-induced periodic vibrations that appear as periodic disturbances in the strip exit thickness. This paper is concerned with the controller design for the position control of the hydraulic adjustment system within the AGC (automatic gauge

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Position Control and Active Eccentricity Compensation in

DOI: 10.1524/auto.1999.47.8.342 Corpus ID: 111540017. Position Control and Active Eccentricity Compensation in Rolling Mills @inproceedings{Kugi1999PositionCA, title={Position Control and Active Eccentricity Compensation in Rolling Mills}, author={Andreas Kugi and Kurt Schlacher and Georg Keintzel}, year={1999} }

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Roll Eccentricity Control Using Identified Eccentricity of

Roll eccentricity is a periodic disturbance caused by a structure of back up rolls in rolling mills, and it affects product thickness accuracy. It cannot be measured directly by sensors, so it should be identified by measured thickness or measured roll force. When there is a large difference of diameters between top and bottom back up roll, the performance of roll eccentricity control

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Advanced Process And Quality Control In Hot Rolling Mills

2021-9-16  How To Control Eccentricity Problem In Hot Rolling Mill. 2014-04-210183;32;hot rolling practice an attempted recollection saral dutta. b. tech. . higher productivity and close control of final product than other forming processes. . this is the starting point of the hot rolling mill practice. Learn More

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