The tandem cold rolling of metal strip is a complex multivariable process whose control presents a significant engineering challenge because of the complex interaction between the process variables, the nonlinearities (which change with operating conditions), and the interstand time delays (which change significantly with the mill speed).
A four high rolling mill is used for the hot rolling of armor and other plates as well as cold rolling of plates, sheets and strips. 4: Tandem rolling mills: It is a set .
tandem rolling mill noun. Definitions. A rolling mill consisting of two or more stands arranged so that the metal being processed travels in a straight line from stand to stand. In continuous rolling, the various stands are synchronized so that the strip can be rolled in all stands simultaneously.
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In rolling mills, intermediate steel products are given their final shape and dimension in a series of shaping and finishing operations. Most of the slabs are heated in reheating furnaces and rolled into final shape in hot– or cold–rolling or finishing mills. While some products ( reinforcement bars, steel plates) only require hotrolling, some others may require both hot– and cold ...
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This paper describes a modeling procedure for tandem cold metal rolling, including the linearization step and system identification for control. The tandem cold rolling process is described by a mathematical model based on algebraic equations developed for control purposes and empirical relations. A ...
Dec 01, 2010· The tandem cold rolling of metal strip is a large, highly complex nonlinear multivariable process the control of which poses a significant engineering challenge. Existing controllers have proven to be susceptible to disturbances and uncertainties in process variables and attempts to increase robustness to these phenomena have had their own drawbacks so a new approach is needed.
Report on Best Available Techniques (BAT) in the German Ferrous Metals Processing Industry FINAL DRAFT DeutschFranzösisches Institut für Umweltforschung (DFIU) FrenchGerman 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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Effect of Friction on Tandem Cold Rolling Mills Chattering Ali HEIDARI,* Mohammad Reza FOROUZAN and Saleh AKBARZADEH Department of Mechanical Engineering, Isfahan University of .
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or in many older mills by a screw arrangement driven by an electric motor . Figure 1. The rolling process (flat rolling). 3. Mathematical Model of Cold Rolling Process . Force Equation . Define the theory for prediction of specific roll force is central to the development of a model for tandem cold rolling. Referring to, which approximately . Figure 2
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cold rolling mill. Cold Rolling Mills The evolution of rolling mills has accelerated as the speed of processors and digital controls have grown by orders of magnitude. The capital cost in a rolling mill is substantial and investors understand that in order to achieve the maximum ROI and shortest
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