how to control eccentricity problem in hot rolling mill

  • Roll Eccentricity Control for Strip Rolling Mills

    An in-depth review of the roll eccentricity control design problem is provided which encompasses a number of recent novel design contributions and includes experimental results from two separate steel tandem cold rolling mill installations.

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  • how to control eccentricity problem in hot rolling mill

    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

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  • Rolling Mill TutorialControl System Design

    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

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  • Technological Milestones ‹ Danieli

    The world s first 4-high Continuous Hot Strip Steel Rolling Mill which made it possible for width and gauge ratios to be increased from 250 1 to 500 1 up to 1000 1 1 Mtpy rolling mill for section and rails in-line heat treated 100-m-long rails for high-speed trains. 2013 DEC DED Danieli eccentricity control and detection for drawn

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  • How To control Eccentricity cost In Hot Rolling Mill

    If the required accuracy of hot rolling mills can be achieved then in some cases cold rolling is not even required which can result in a radical decrease of production costs. The schematic structure of a typical aluminum hot reversing rolling mill . how to control eccentricity problem in hot rolling mill

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  • Strip Thickness Control of Cold Rolling Mill with

    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

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  • how to control eccentricity problem in hot rolling mill

    This example shows how to design a MIMO LQG regulator to control the horizontal and vertical thickness of a steel beam in a hot steel rolling mill. Rolling Stand Model Figures 1 and 2 depict the process of shaping a beam of hot steel by compressing it with rolling cylinders. Get price how to control eccentricity problem in hot rolling mill

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  • The Hot Rolling Process

    CSI s Hot Strip Mill includes six finishing mills which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature between 1500° to 1650°F specified to reach certain mechanical properties.

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  • Cold Rolling Mills Solutions Nidec Industrial Solutions

    Nidec Industrial Solutions Packages real time automation and process control systems to ensure consistent quality. For all types of cold rolling mills from single stand up to a tandem with pickilng line Nidec Industrial Solutions has developed an electrical and automation solution for your needs.

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  • 9th INTERNATIONAL ROLLING MILL ACADEMY

    roll eccentricity control schemes flatness control and recently robust multivariable control of hot mills. Dr. Reza Katebi is Reader in the university. His research interests include the global aspects of hot strip mill operation with recent research including discrete-event simulation and the coordinated control of finishing mills.

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  • Strip Thickness Control of Cold Rolling Mill with Roll

    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.

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  • Hot Rolling MillYouTube

    Apr 22 2012 · Unsubscribe from Högskolan Dalarna Sign in to add this video to a playlist. Sign in to report inappropriate content. Sign in to make your opinion count. Sign in to make your opinion count. The

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  • Hot Rolling Mill Roll Eccentricity

    Hot Rolling Mill Roll Eccentricity We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment milling equipment mineral processing equipment and building materials equipment.

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  • Mino Automation Company

    MINO Automation together with MINO Process Control has developed the technological architecture AVANTI™ TCS which provides automatic flatness control and thickness control for ferrous and non-ferrous rolling mills. The system is designed to be integrated or act as stand-alone package for new revamped and upgraded rolling mills.

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  • Strip Thickness Control of Cold Rolling Mill with Roll

    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

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  • Report on Best Available Techniques (BAT) in the German

    Report on Best Available Techniques (BAT) in the German Ferrous Metals Processing Industry FINAL DRAFT Deutsch-Französisches Institut für Umweltforschung (DFIU) French-German Institute for Environmental Research University of Karlsruhe (TH) o. Prof. Dr. O. Rentz Dipl.-Wirtschaftsing. Rainer Jochum Dr. Frank Schultmann Karlsruhe March 1999

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  • Method of measuring and compensating roll eccentricity of

    Jan 26 1993 · an off-line eccentricity identification method which is performed when there is no plate rolling through the mill and with the top work roll and the bottom work roll in tight contact said off-line eccentricity identification method determining the eccentricity values of N first points which equally divide a circumference of the top backup roll

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  • CorrosionpediaWhat is Hot Rolling Definition from

    Hot rolling breaks the grain structures and destroys the boundaries giving rise to the formation of new structures with strong boundaries having uniform grain structures. Starting materials such as blooms or slabs at an elevated temperature flow from the continuous casting process directly into the rolling mills.

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  • how to control eccentricity problem in hot rolling mill

    Neural network for identifiion of roll eccentricity in The roll eccentricity in a rolling mill may define the limit of achievable thickness tolerances and thus is subject of interest for the automation equipment in hot rolling mills as well as in cold rolling mills. Get price Thickness Control for a Steel Beam MATLAB Simulink Example

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  • Strip Thickness Control of Cold Rolling Mill with

    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

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  • Multi-resolution wavelet method for roll eccentricity

    In order to compensate the roll eccentricity in hot strip rolling process a multi-resolution wavelet transform method was proposed. This wavelet method has quiet good localization characteristic in both time domain and frequency domain. To eliminate frequency aliases inhered in Mallat algorithm an anti-aliasing algorithm combining fast Fourier transform (FFT) and

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  • POINTWISE LINEAR QUADRATIC OPTIMAL CONTROL OF A

    It is considered that the pointwise linear quadratic optimal control might fulfill this need. This dissertation investigates the theoretical and applied aspects of this technique for control of a tandem cold rolling mill using criteria based on practical applications. A mathematical model of the mill is developed from which nonlinear state space

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  • Solutions for cold rolling mills Nonlinear simulation of

    Solutions for cold rolling mills Nonlinear simulation of cold rolling processes The rolling of flat products is a complex and challenging process. With the simulation tool for cold rolling mills the complex rolling process can be precisely simulated also for various production scenarios. It helps to quickly identify quality

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  • hot rolling mill roll eccentricityHof van Hoeven

    ROLL ECCENTRICITY CONTROL WITH THE FORCE FEED ROLL ECCENTRICITY CONTROL WITH THE FORCE FEED FORWARD AGC SYSTEM Francis Wagner Manager Rolling Mill Automation Hatch Associates Consultants Inc. Buffalo NY USA 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.

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  • Thickness Control for a Steel BeamMATLAB Simulink

    This example shows how to design a MIMO LQG regulator to control the horizontal and vertical thickness of a steel beam in a hot steel rolling mill. Rolling Stand Model Figures 1 and 2 depict the process of shaping a beam of hot steel by compressing it with rolling cylinders.

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  • Active compensation of roll eccentricity in rolling mills

    Abstract This paper is concerned with the active compensation of the roll eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons like e.g. inexact roll grinding or nonuniform thermal expansion of the rolls.

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  • Technological Milestones ‹ Danieli

    Technological Milestones and World Records. 1914. The first electric arc furnace in Italy. 1926 Danieli Wean United. The world s first 4-high Continuous Hot Strip Steel Rolling Mill which made it possible for width and gauge ratios to be increased from 250 1 to 500 1 up to 1000 1 DEC DED Danieli eccentricity control and detection for

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  • H∞ Control system for tandem cold mills with roll eccentricity

    H∞ Control system for tandem cold mills with roll eccentricity. Firstly this paper proposes a lumped-parameter hot-rolling mill model. This leads to a non-standard H∞ control problem

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  • Cold Rolling Mills Solutions Nidec Industrial Solutions

    ARTICS Cold Rolling High-quality process models for Cold Rolling Mills. Based on our consolidated experience in more than one hundred projects across the globe Nidec Industrial Solutions has developed a vast array of functions based on auto-adaptive mathematical models that optimize rolling schedule calculations in real time.

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

    cooling system. Problems of this kind can never really be calculated but they have a detrimental effect on all rolling schedules including stresses in the roll. As regards "abnormal" rolling conditionswhich are more or less very "normal" for rolling millsroll damage often occurs with consequences for the mill and the rolled product.

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  • roll eccentricity pdf

    The Complete Technology Book on Hot Rolling of Steel Passive roll eccentricity control methods Active roll eccentricity control methods Preventive roll eccentricity control methods Dead Band Method Roll Force Method Fourier Analyzer of Roll Eccentricity (FARE) Method Flying Gauge Change 8.

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  • Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

    accuracy in thickness control in metal rolling area. If the required accuracy of hot rolling mills can be achieved then in some cases cold rolling is not even required which can result in a radical decrease of production costs. The schematic structure of a typical aluminum hot reversing rolling mill can be seen in Figure 1.

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  • Roll Eccentricity Control for Strip Rolling Mills

    SIMULATION RESULTS In eccentricity control the following practical considerations apply to production rolling mills and thus should be cons idered in the des ign of relevant simulation studies • the incoming feed can introduce periodic disturbances in the form of hot rolled thickness disturbances or uncoiler induced tension fluctuations

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  • The Hot Rolling Process

    CSI s Hot Strip Mill includes six finishing mills which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature between 1500° to 1650°F specified to reach certain mechanical properties.

    Chat Online
  • Kunio Sekiguchi Inventions Patents and Patent

    Kunio Sekiguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

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  • Unwind/rewind eccentricity control for rolling mills

    Mar 06 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 which material is under tension

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