Abstract
AbstractThere is good evidence that variations in billet quality between strands on a continuous casting machine can be attributed to reoxidation with subsequent slag formation. The incidence of surface slag defects is strongly influenced by the strand location relative to the position of the ladle stream in the tundish. After a study of fluid flow and similitude criteria, a full-scale Plexiglas tundish containing three regular strand casting nozzles was constructed as a water model and an investigation made of the conditions which govern stream breakdown. Submerged ladle nozzles, various baffle configurations, and alterations in tundish nozzle design were investigated in order to develop improved tundish streams with quiescent conditions in the mould. The findings from this model work together with those obtained from plant trials have now been incorporated into regular practice. Resume Il semble evident que les differences de qualite des billettes entre diverses coulees en continu soient attribuables a ...
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