Effect of Ladle Shroud Alignment on Steel Quality in a Four-strand, Delta-shaped, Tundish

摘要

As seen from the above, shroud mis-alignment with an exposed ladle shroud can be catastrophic in terms of transient steel quality to the strands, and some remedial measures are called for. From the numerical predictions, it is clear that in the submerged condition, a biased shroud has no effect on flow and TKE fields, and slag is not entrained. This suggests that opening up of a new ladle when the ladle shroud is above the level of steel in the tundish should be avoided. That procedure is possible with bell-shaped ladle shrouds nozzles which can accommodate gas pockets, but not with straight bore nozzles more commonly used within the industry. For these, one opens up a new ladle with the ladle shroud clear of the melt. This precaution avoids exploding ladle shrouds and/or dangerous。