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US 7,581,664 B2Granted
Multi-outlet casting nozzle
AssigneeVesuvius Crucible Company
InventorsJohan L. Richaud, Lawrence J. Heaslip, James Dorricott, Dong Xu
Life of this patent
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Abstract
The present invention concerns a submerged entry nozzle for use in the continuous casting of liquid metal. The nozzle comprises a central bore and a plurality of pairs of discharge outlets. The cross-sectional area of the central bore decreases between pairs of discharge outlets, such that ratio of height to width of any outlet is one or less.
Claims25
A submerged entry nozzle for use in the continuous casting of liquid metal, the nozzle comprising:
- a) a body having a central bore through most of the body, the bore terminating in a closed end;
- b) a plurality of pairs of discharge outlets symmetrically disposed about a longitudinal axis of the nozzle;
- wherein the cross-sectional area of the central bore decreases between pairs of discharge outlets, and wherein the ratio of height to width of any outlet is one or less, wherein the total area of all outlets is less than twice the cross-sectional area of the central bore that is perpendicular to the flow of the liquid metal, and wherein all discharge outlets are directed at an angle not greater than approximately 90 degrees to the end of the longitudinal axis of the nozzle directed towards the closed end of the bore.
A submerged entry nozzle for use in the continuous casting of liquid metal, the nozzle comprising:
- a) a body having a central bore through most of the body, the bore terminating in a closed end;
- b) a plurality of pairs of discharge outlets symmetrically disposed about a longitudinal axis of the nozzle;
- wherein the cross-sectional area of the central bore decreases between pairs of discharge outlets, and wherein the width of outlets closer to the closed end of the nozzle have the same width as outlets further from the closed end of the nozzle, wherein the total area of all outlets is less than twice the cross-sectional area of the central bore that is perpendicular to the flow of the liquid metal, and wherein all discharge outlets are directed at an angle not greater than approximately 90 degrees to the end of the longitudinal axis of the nozzle directed towards the closed end of the bore.
Dependencies are inferred from the claim text.