US 11,052,459 B2
Submerged entry nozzle for continuous casting
Ken Morales Higa, West Chester, OH (US)
Assigned to Cleveland-Cliffs Steel Properties Inc., West Chester, OH (US)
Filed by AK Steel Properties, Inc., West Chester, OH (US)
Filed on Jan. 24, 2019, as Appl. No. 16/256,208.
Claims priority of provisional application 62/622,363, filed on Jan. 26, 2018.
Prior Publication US 2019/0232364 A1, Aug. 1, 2019
Int. Cl. B22D 41/50 (2006.01); B22D 11/10 (2006.01)
CPC B22D 41/50 (2013.01) [B22D 11/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A submerged entry nozzle for continuous casting comprising an exterior surface and an interior surface defining a bore extending from a top surface of the nozzle to a bottom portion of the nozzle, wherein the nozzle comprises a pair of ports extending from a bottom portion of the bore to the exterior surface, wherein each port of the pair of ports comprises a top surface, a bottom surface, and a pair of side surfaces extending between the top surface and the bottom surface to form a triangular shaped opening extending from a central portion of the nozzle to the exterior surface, wherein the top surface extends continuously downwardly at a first angle from the central portion to the exterior surface, wherein the bottom surface extends continuously outwardly from the central portion to the exterior surface at a second angle that is less than the first angle of the top surface such that a distance between the top surface and the bottom surface becomes smaller as the top and bottom surfaces extend from the central portion to the exterior surface, and wherein the triangular shaped opening narrows from a top portion of each port to a bottom portion of each port such that each port is configured to increase a velocity of the fluid as the fluid flows through each port.
 
12. A method of operating a continuous casting system comprising:
providing a nozzle comprising a bore extending longitudinally through the nozzle and a pair of ports extending from the bore to an exterior surface of the nozzle, wherein each port of the pair of ports comprises a width that decreases from a top portion to a bottom portion of the port, wherein each port of the pair of ports comprises a top surface and a bottom surface that each extend continuously downwardly from the bore to the exterior surface, wherein the bottom surface extends at an angle that is less than an angle of the top surface such that a distance between the top surface and the bottom surface becomes smaller as the top and bottom surfaces extend from the bore to the exterior surface;
positioning the nozzle within a mold such that each port of the pair of ports is submerged in the mold; and
flowing fluid through the bore and discharging an entirety of the fluid into the mold via the pair of ports such that the pair of ports increase a velocity of the fluid as the fluid flows through the pair of ports.