Criticality of Sampler Locations in Inert-gas Shrouded Tundishes during Open Eye Events and Unbalanced Throughputs

摘要

The standard sampling practice involves procuring lollipop samples from an opening on tundish floor close to the stopper rods. Analyzing these samples gives us an overall idea about the chemistry of steel and inclusions in the tundish. A mathematical model was built using computational fluid dynamics to determine the inclusion paths in cases of balanced and unbalanced throughput casting of steel. The calculated trajectories showed that the inclusions are mostly concentrated near the ladle shroud where the tundish open eye (TOE) forms. In order to investigate the effect of TOEs on the chemistry of steel, the ideal sampling location was determined from the mathematical model.