Patent ID: 6932250
Filing Date: 2005-08-23
Classification: B22D

Abstract:
1. A submerged entry nozzle, comprising: a) a connection end adapted to attach to a slide gate mechanism; b) a bore extending from said connection end to a terminus end, said bore including a tapered wall segment and a vertical wall segment along the length thereof, said tapered wall segment shaped to create a gradual narrowing passageway that directs a concentrated flow of draining molten steel along said vertical wall segment to create an increasing high velocity gradient across the molten steel draining downward through said bore to said terminus end; and c) a bifurcated port discharge chamber, said discharge chamber including a diverter having a knife-edge positioned within said discharge chamber so that said draining concentrated steel flow always impacts at the same location along said knife-edge, and so that said concentrated steel flow is always divided by said knife-edge into substantially equal molten steel flows within said discharge chamber, said diverter shaped to cause each said divided molten steel flew to spiral in a direction perpendicular to said bifurcated port along a periphery of each bifurcated port opening, said perpendicular spiral flow discharged from said submerged entry nozzle into a continuous caster mold.