Annals of the Assembly for International Heat Transfer Conference 13

ISBN 1-56700-225-0 / CD 1-56700-226-9

Year 2006

Josef Stetina
Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech Republic

Frantisek Kavicka
Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech Republic

J. Dobrovska
VSB - Technical University of Ostrava, Czech Republic

Solidification and cooling of a continuously cast steel billet and the heating of the mould is a very complicated problem of transient heat and mass transfer. This 3D numerical model is capable of simulating the temperature field of a caster in real time. The temperature field in the concasting is determined via the transient 3D enthalpy balance equation with the Finite Differences Method. The numerical computation takes place simultaneously with the data acquisition - not only to confront it with the numerical model, but also to make it more accurate throughout the process. This is ensured by the correct process procedure: real process → input data → numerical analysis → optimisation → correction of process. The on-line model enables a multiple increase in the speed with which the temperature field of the concasting is computed - both with the application of more sophisticated software as well as hardware. As a result of this, it will be possible to monitor the formation of the temperature field - in real time - within the mould, the secondary- and maybe even the tertiary-cooling zones, and also to utilise this information for the optimisation of the control of the caster as a whole as well as its individual parts. The paper deals with the shift rate history, the calculated metallurgical length, temperatures measured using the pyrometers and the calculated temperatures. The presented model is a valuable computational tool and accurate simulator for investigating transient phenomena in billet-caster operations, and for developing control methods, the choice of an optimum cooling strategy to meet all quality requirements, and an assessment of the heat-energy content required for direct rolling.

MPH-05 pages DOI: 10.1615/IHTC13.p12.50 Download article

Article price - $35.00

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