Vliv provozních podmínek na proudění oceli v pětiproudé asymetrické mezipánvi s využitím fyzikálních experimentů

Abstract

The presented diploma thesis is devoted to the modelling of the behaviour of the flow characteristics of molten steel inside tundish for continuous casting. The physical modelling method, which is one of the two modelling methods commonly used to observe metallurgical processes, was used to meet the objective. The research (experiments) was carried out on a scaled-down physical model of a five-strand asymmetric tundish on a scale of 1:4. The goal of the research was to experiment with several different operating conditions that can significantly change the character of the flow and thus affect the resulting quality of the steel. In this research, it was specifically about monitoring the effect of three types of turbulence inhibitor, two casting speeds and two positions of the ladle shroud (perpendicular and transverse deflected). A total of 12 different variants were tested. The results of the experiments were time dependences of concentration changes (C curves), from which individual residence times and ratios of individual volumes inside tundish were determined. Finally, optical recordings of flow characteristics were made using the dyed liquid visualization method.