Control In Hot Rolling Mills

  • Gefran Magnetostrictive transducer for hot rolling mill

    The HYPERWAVE WRA S magnetostrictive transducer allows to control the lamination process in the hot rolling mill manufacturer thanks to robust product for increased reliability to work in harsh operating conditions signal stability in high vibration environments high working temperature of 90°C

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  • Loop monitoring and assessment of hot strip mill control

    For further reading on hot strip mills and hot rolling [1] and [2] are recommended A problem definition is given in chapter 1 It describes the problems to be solved and the assumptions that have been made A motivation to why the problem is relevant will also be presented It is divided into four subsections The first two subsections covers monitoring and assessment tools for the control

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  • Fundamentals of Roll Cooling and Control of Flatness at

    Because of the current demands on mills to process much lighter exit gauges from increased incoming hot strip thickness much larger reductions are necessary on individual mill stands such high reductions at a nominal width result in a larger area of contact with corresponding higher rolling force friction and heat generation see Fig 1

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  • AWC Cylinder for Steel Mill

    Over the years we have built countless steel mill cylinders over the years include AGC Automatic Gauge Control tilt cylinders lifting cylinders rotary cylinders walking beam conveyor plus all types of hot rolling cold rolling cylinders and more Basically we have done almost all types of cylinders in a steel mill

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  • ROLLING Primetals Technologies

    hot strip mills are the reduction of strip width deviations and the avoidance of below minimum widths after the finish ing mill which is why Primetals Technologies has devel oped model based strip width control Recognizing that tension can be used to manipulate the strip width in the finishing mill model based width control compensates

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  • Looper and tension control in hot rolling mills A survey

    Control of hot steel rolling mills aims at raising the levels of quality of the related industrial production and at minimizing the cost of the electric energy consumed by such industrial units

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  • Advanced Control for Hot Rolling Mills SpringerLink

    Summary Hot strip rolling mills are characterised by a process which has many interactions is distributed with dominant transport delays and has a lack of measurements due to

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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

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  • Rolling Process Working Application Defects Type of

    There are certain types of the rolling process whereas in the hot rolling process the metal is heated at its desirable temperature when the metal is properly heated then the metal should be passed between the one or more rolling mills to gain the proper desirable shape This process is vastly used in respect of any other rolling process

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  • HIGH PERFORMANCE HOT ROLLING MILLS Electrics and Automation

    So in X pact for hot rolling mills all regulation and control functions are implemented on our uniform system platform X Pact ProBAS and are pro grammed and parameterized in a common develop ment environment That ensures maximum availabili ty of all system variables Interfaces between differ ent system platforms are no longer necessary because the reflective memory RFM

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  • Design and Simulation of Torque Control for Hot Rolling

    current state of automation and control for hot rolling mills with a particular emphasis on flat products is introduced A typical modern control system design is discussed available measurements available control actuators and material properties Currently control of microstructure is achieved by imposing deformation and temperature time profiles on the process The need for more

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  • Prediction and control of front end curvature

    A typical hot rolling mill consists of a reheat furnace sizing press roughing mill finishing mill runout table and coiler as shown in Figure 1 Among these components the finishing mill which is composed of two work rolls WRs two intermediate rolls IMRs and two backup rolls BURs supporting them has a major influence on the dimensional accuracy of the slab thickness

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  • Advanced Process and Quality Control in Hot Rolling Mills

    Key Feature of Process Control Detection of Periodic Defects Rolls and rollers are the most heavily used parts of a rolling mill Due to wear from contacting hot material with great force their lifetime is limited Although rolls are refurbished in the roll shop regularly they occasionally crack before the end of the usual production cycle

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  • Advanced Control for Hot Rolling Mills SpringerLink

    Summary Hot strip rolling mills are characterised by a process which has many interactions is distributed with dominant transport delays and has a lack of measurements due to

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  • production planning and control in hot roll mill

    Computer Control The automation of hot rolling mills has matured such that the control system has been organized in hierarchical levels At the topmost is what is known as level 3 which has the production planning and control function The Hot Rolling Process California Steel The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi finished steel slabs of

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  • Hazard identification and safety control in hot

    · Process In Hazard Control Of Hot Rolling Mill [FIGURE 3 OMITTED] Hazard description in Hot Rolling Mills Physical agents that can cause risk which include noise vibration heat and cold stress and lighting All these types of risks can be found in steel re rolling mills 1 Slips trips and falls Potential sources of slip and trip in steel industry includes wet greasy and slippery

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  • PDF MODELLING AND CONTROL OF A HOT

    Download MODELLING AND CONTROL OF A HOT ROLLING MILL Francisco Rossomando Latin American Applied Research 36 199 204 2006 MODELLING AND CONTROL OF A HOT ROLLING MILL F G ROSSOMANDO† and J DENTI FILHO‡ †Coordenadoria da Mecânica CEFETES CEP 29040 780 Vitória ES Brasil ‡Laboratório de Controle e Instrumentação UFES CT2

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  • Looper and tension control in hot rolling mills

    Control of hot steel rolling mills aims at raising the levels of quality of the related industrial production and at minimizing the cost of the electric energy consumed by such industrial units

    Get Price
  • Fundamentals of Roll Cooling and Control of Flatness at

    FUNDAMENTALS OF ROLL COOLING AND CONTROL OF FLATNESS AT PRIMARY COLD REDUCTION DARON LLOYD MANAGING DIRECTOR LECHLER LTD PREAMBLE In the process of Rolling the most significant aspect is the generation of heat through friction and deformation in the roll bite and in a typical Cold Tandem Mill work roll temperatures normally fall in the range of 55oC

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  • Temperature Monitoring for Hot Rolling Mills Williamson

    Temperature Monitoring Temperature Control in Hot Rolling Mills Hot Rolling Mills are used to reheat shapes of steel to soften them enough so that they can be rolled thinner and longer through a series of rolling stands The finished product can be either a strip

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  • A SURVEY OF THE LOOPER TENSION CONTROL TECHNOLOGY IN HOT

    CONTROL TECHNOLOGY IN HOT ROLLING MILLS and mass flow in hot rolling mills can be satisfied by proper control of the strip tension and looper angle Figure 1 shows the tension and looper control in a typical finishing mill Traditionally looper angle control has been per formed by changing the rotating speed of a main motor but there has been no tension feedback control because of the

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  • Temperature Monitoring for Hot Rolling Mills Williamson

    Temperature Monitoring Temperature Control in Hot Rolling Mills Hot Rolling Mills are used to reheat shapes of steel to soften them enough so that they can be rolled thinner and longer through a series of rolling stands The finished product can be either a

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  • 1 Hot rolling and rolling defects Front and back

    Rolling mill control Production of continuous sheets and strips is one of the attractive features of modern rolling mills However control of sheet thickness and cross section is a real challenge In order to continuously monitor the thickness of sheets rolled x ray or gamma ray sensors are used

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF

    Secondary scale on hot strip and the impact on wear is another issue Stresses from Hertzian pressure in 4 high cold mill back up rolls were measured years ago the results were never published but of high interest also maybe later K H Schröder July 2003 K H Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

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  • Rolling Mill an overview ScienceDirect Topics

    P Montmitonnet in Encyclopedia of Materials Science and Technology 2001 Automatic Control and Modeling Modern rolling mills and specially cold tandem mills with high productivity are equipped with a number of transducers participating in automatic control systems rolling force on exception rolling torques strip tensions between stands average gauge and thickness profile at exit

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  • A Survey of the looper tension control technology in hot

    The control target in the looper tension control of HRM hot rolling mills is to maintain looper angle and strip tension simultaneously at their desired values However the most difficult

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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

    Get Price
  • Looper and tension control in hot rolling mills A survey

    Jul 01 2007· 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 20 mm Fig 1 shows a typical layout of a hot strip mill

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  • [PDF] Modelling and control of a hot rolling mill

    In this paper a real application of opti mal control of a hot rolling mill is presented It is used the state space model formulation in the minimization of the strip thickness variations It is presented the simulation results of the control model which is com pared with industrial real data from process controled by traditional techniques

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  • Design and Simulation of Torque Control for Hot Rolling

    current state of automation and control for hot rolling mills with a particular emphasis on flat products is introduced A typical modern control system design is discussed available measurements available control actuators and material properties Currently control of microstructure is achieved by imposing deformation and temperature time profiles on the process The need for more

    Get Price
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