The invention provides a process for controlling temperature of strip steel comprising the steps of, (1) forecasting the strip temperature of a certain future time based on strip temperature dynamic model, (2) calculating the needed gas flow variance so as to minimize the difference between the temperature of the destination strip steel and the forecasted strip temperature, (3) calculating gas flow configuration value according to the real gas flow and the gas flow deviation(4) sending the gas flow configuration value to the instrument control apparatus, (5) carrying out static model and dynamic model self-learning according to the real strip temperature, and calculating the gas flow configuration value again.

Process for controlling temperature of strip steel

Monitoring method used for information management of materials in steel rolling mill

A model-based strategy is provided for determining casting roll operating temperature in a continuous thin strip casting process. A first temperature sensor produces a first temperature signal indicative of the temperature of cooling liquid supplied to the casting rolls and a second temperature sensor produces a second temperature signal indicative of the temperature of cooling liquid temperature exiting the casting rolls. A computer determines a heat flux value as a function of the first and second temperature signals, and computes the operating temperature of the casting rolls as a function of the heat flux value, the second temperature signal and a number of constants defined by fixed-valued operating parameters of the continuous thin strip casting process. A control strategy is also provided to modify one or more operating parameters of the continuous thin strip casting process as a function of the casting roll temperature.

Model-based system for determining casting roll operating temperature in a thin strip casting process

A method for producing long metal products includes the steps of receiving long intermediate products traveling on respective continuous casting lines, to an exit area, and subsequently introducing products from the exit area into a production plant having known layout parameters; the production plant has a rolling mill for rolling the products; interconnected production lines between the exit area of the casting machine and the rolling mill, the production lines define production paths or routes; and a first and a second heating devices. The method associates a mathematical model to the production plant for dynamically calculating a reference value, or Global Heating Cost Index, correlated to heating devices; automatically determining for the intermediate products the production path or route that minimizes the reference value, or Global Heating Cost Index; and eventually automatically routing each of the products along the determined production path which minimizes the reference value, or Global Heating Cost Index.

Method for minimizing the global production cost of long metal products and production plant operating according to such method

The invention relates to a method for processing a continuously cast material, wherein the material after the continuous casting in a continuous casting plant (1) into individual units (2), in particular slabs, is divided, said units (2) placed in a storage bin (3) and be transported to a storage time from the storage location to a processing or treatment device (4), and processed or treated here. In order to further process or treated further individual slabs in an optimum manner, the invention provides, that is carried out for at least a number of units (2) at at least one location (5) detection of the temperature (T) or the temperature distribution, in which (for the unit 2) there is provided a thermal equivalent model (6) in a computer (7) and the detected temperature (T) or temperature distribution at the at least one location (5) is the equivalent model (6) as a boundary condition for the unit (2) placed, wherein calculated on the basis of the equivalent thermal model (6) for at least a temporal portion of the other temperature profile of the unit (2) and it is in the subsequent processing or treatment of the unit (2) as the basis.

A method for processing a continuously cast material

The heat content and the temperature profile of the slab are calculated by means of a mathematical-physical model, proceeding from the known temperature of the liquid phase at the mold exit, the known physical slab parameters, the convective spreading of the heat within the slab, and the time-dependent inhomogeneous heat transfer to the respective surrounding media. The calculation result, possibly in combination with the measured surface temperature, is used to control the material flow in an existing installation.

Method for determining and controlling material flow during continuous casting of slabs

The invention relates to a method for determining and controlling the material flux of continuous cast slabs, in particular steel slabs, by tracking and optimizing the temperature on their transport path between the continuous casting machine and the rolling mill. The known temperature of the liquid phase at the casting die exit of the continuous casting plant and the physical parameters of the slab are used as starting points in order to determine the heat amount and the temperature profile of the slab. The convective intermixture of the heat quantity contained in the slab and the time-dependent heat loss of the slab, which is inhomogeneously cooling to the surrounding medium, are then calculated by means of a mathematical/physical model. The result of the calculation is used, optionally together with the measured surface temperature of the slab, in order to control the flux of material in an existing slab tracking system.

Quittmann Uwe

Papers

Method for determining and controlling material flow during continuous casting of slabs

Method for determining and controlling material flux of continuous cast slabs