Original scientific paper

Cooling nozzles characteristics for numerical models of continuous casting

R. Pyszko ; Faculty of Metallurgy and Materials Engineering
M. Příhoda ; Faculty of Metallurgy and Materials Engineering
J. Burda ; Faculty of Metallurgy and Materials Engineering
P. Fojtík ; Faculty of Metallurgy and Materials Engineering
T. Kubín ; Faculty of Mechanical Engineering, VŠB - Technical University of Ostrava, Czech Republic
M. Vaculík ; Faculty of Metallurgy and Materials Engineering
M. Velička ; Faculty of Metallurgy and Materials Engineering
M. Čarnogurská ; Faculty of Mechanical Engineering, Technical University of Košice, Slovakia

Abstract

Modelling the temperature field of a continuously cast strand is an important tool for the process diagnostics. The main preconditions for numerical simulation of the temperature field of the solidifying strand are correct boundary conditions, especially the surface condition in the secondary zone of the caster. The paper deals with techniques of determining the surface condition under cooling nozzles as well as their approximation and implementation into the model algorithm. Techniques used for laboratory measurements of both cold and hot spraying characteristics of water or water-air cooling nozzles are described. The relationship between the cold and hot characteristics was found. Implementation of such a dependence into the model algorithm reduces the duration and cost of laboratory measurements.

Keywords

cooling; nozzle; continuous casting of steel; numerical model; boundary condition

Hrčak ID:

100806

URI

https://hrcak.srce.hr/100806

Publication date:

1.10.2013.

Visits: 1.260 *