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
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
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
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
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
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
Steel Hot Rolling Mills 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 plate rod bar wire or shape rails and H beams After the steel is formed to its desired shape it is
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
CVC plus is a worldwide established and well proven technology package to control profile and flatness in hot strip mills and plate mills Latest developments of this technology are the application of CVC plus grindings on work and backup rolls CVC plus grindings of higher order and intelligent shifting strategies The capability of the developments is demonstrated with recent
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
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
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
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
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
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
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
Jun 15 2016· 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
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
· 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
Higher control accuracy in hot rolling mill due to direct encoder attachment Back No mechanical play because solution requires no transfer gearbox or additional couplings Directly attachable compact U ONE basic unit EMI safe signal transmission via fiber optic cable Improved material quality due to higher control accuracy Before The assembly of encoder and mechanical cam limit
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
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
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
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
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
