IMMERSED PIPE FOR CONTINUOUS CASTING

PROBLEM TO BE SOLVED: To prevent the molten steel blow-out or the air suction attributable of a metal left behind in an intermediate nozzle by inclining an inner circumferential surface of a nozzle inlet part outwardly. SOLUTION: An immersed nozzle 4A is provided with an inclined part 18 in which an inner circumferential surface of a nozzle inlet part is inclined outwardly. Even when a metal is left behind in a condition where the nozzle 4A is connected to a lower end of an intermediate nozzle, the metal is stored in a space formed by the inclined part 18, and not brought into contact with the nozzle 4A, and generation of an aperture between the intermediate nozzle and a joining surface of the nozzle 4A is avoided. In the nozzle 4A, the molten steel flow is received by the inclined part 18 even when the axis is slightly deviated from the intermediate nozzle, and no refractory materials are eroded. The inclination may be determined by estimating the size of the metal left behind so that a space slightly large than the size is formed above the inclined part. The inclination contributes the stabilization of the continuous casting operation and the quality of a cast slab.