Výzkum nestacionárního teplotního pole v ocelové bramě 1300x145 mm.

Investigation of the transient temperature field of the 1300x145 mm steel slab

článek ve sborníku ve WoS nebo Scopus

en

The solidification and cooling of continuously cast steel (a billet, slab or cylinder – generally a concasting) and simultaneous heating of the crystallizer is a very complicated problem of transient heat and mass transfer. The solving of such a problem is impossible without numerical models of the temperature field, not only of the concasting itself, while it is being processed through the concasting machine (CCM), but of the crystallizer as well. An original three-dimensional (3D) numerical model of the temperature field of a solidifying concast steel slab has been applied. It has graphical input and output – automatic generation of the net and plotting of temperature fields in the form of color iso-therms and iso-zones, and temperature-time curves for any point of the system being investigated. This numerical model is capable of simulating the temperature field of a CCM as a whole, or any of its parts. Simultaneously, experimental research and measuring have to take place not only to be confronted with the numerical model, but also to make it more accurate throughout the course of the process. The use of the numerical model of solidification and cooling has an irreplaceable role in practice and allows optimization of the process.

Originální třírozměrný numerický model (3D) teplotního pole tuhnoucího kontinuálně odlévaného odlitku. Model má grafické vstupy a výstupy, automatickou generaci sítě a znázornění teplotního pole formou barevných izoterm , izozon a křivek časových průběhů pro libovolný bod sledovaného systému. Současně je prováděn experimentální výzkum a měření. Použití numerického modelu má nezastupitelnou roli při optimalizaci procesu.

The solidification and cooling of continuously cast steel (a billet, slab or cylinder – generally a concasting) and simultaneous heating of the crystallizer is a very complicated problem of transient heat and mass transfer. The solving of such a problem is impossible without numerical models of the temperature field, not only of the concasting itself, while it is being processed through the concasting machine (CCM), but of the crystallizer as well. An original three-dimensional (3D) numerical model of the temperature field of a solidifying concast steel slab has been applied. It has graphical input and output – automatic generation of the net and plotting of temperature fields in the form of color iso-therms and iso-zones, and temperature-time curves for any point of the system being investigated. This numerical model is capable of simulating the temperature field of a CCM as a whole, or any of its parts. Simultaneously, experimental research and measuring have to take place not only to be confronted with the numerical model, but also to make it more accurate throughout the course of the process. The use of the numerical model of solidification and cooling has an irreplaceable role in practice and allows optimization of the process.

continuously cast steel, solidification, heat transfer, temperature field, 3D numerical model

2001

15.05.2001

TANGER s.r.o. Ostrava

Ostrava

80-85988-56-9

METAL 2001 Sborník abstraktů přednášek

2