Submersible nozzle

摘要

The submerged nozzle for feeding steel into the mould during continuous casting of steel, especially for continuous casting of round blooms, consisting of the basic body (1) of the nozzle, in which an internal flow channel (4) is created leading to the set of side outlet holes (5) arranged in the lower exit part (3) of the basic body (1) of the nozzle, while the lower exit part (3) of the basic body (1) of the nozzle with the side outlet holes (5) is closed in the vicinity of their mouths from below with the extended end piece (6) exceeding the outer shape (10) of the basic body (1) of the nozzle by the distance P with the dish-shaped lower bottom (7) equipped upwards with curved surfaces (8) guiding the steel flow from the internal flow channel (4) into the side outlet holes (5). Between the dish-shaped lower bottom (7) and guiding curved surfaces (8) there is arranged at least one braking retarder (11).