APPARATUS FOR POURING MOLTEN STEEL INTO A MOLD IN CONTINUOUS CASTING OF STEEL

摘要

An apparatus for pouring molten steel (3) into a mold (7) in continuous casting of steel according to the present invention comprises: a tundish (1) holding molten steel (3); a nozzle (4) which is set at the bottom of said tundish (1), whose opening made in said tundish (1) has a spherical shape and through which molten steel (3) flows out of said tundish (1); a sliding plate (5) which is set at the lower portion of said nozzle (4) and which opens and closes said nozzle (4); an immersion nozzle (6) which is set under said sliding plate (5) and through which molten steel (3) is poured into the mold (7); and a block body (8) which has a core body (84) therein, whose outer layer is made from refractory material and has a spherical surface large enough to cover the opening of said nozzle (4) and whose bulk specific gravity ranges between bulk specific gravity of slag (2) and that of molten steel (3).