TUNDISH FOR IMPROVING CLEANLINESS OF MOLTEN STEEL BY ENABLING FLOW CONTROL

摘要

PURPOSE: A tundish for improving cleanliness of molten steel by enabling flow control is provided to suppress reoxidation of molten steel and improve cleanliness of molten steel by suppressing rise of molten steel current as equally controlling retention time of molten steel in an eccentric pouring type tundish. CONSTITUTION: In an eccentric pouring type tundish for eccentric pouring molten steel injected through ladle into continuous casting mold, the tundish(4) for improving cleanliness of molten steel by enabling flow control comprises a molten steel backflow type pad(12) which is installed at the tundish bottom where molten steel is injected into, and at the upper part of one side of which a flow restraint body(12a) is integrally formed to lengthen retention time of molten steel to a mold having short length; and a turbulence restraint means(14) installed at the backflow type pad(12) to increase cleanliness of molten steel by guiding backflow of molten steel injected into the pad(12) to the side of molten steel surface, thereby collecting inclusions on the molten steel as tundish slag to the utmost, wherein the turbulence restraint means(14) is an inclined wall installed with being inclined to the side wall of the pad(12) in a certain angle (&thgr;) oppositely to the flow restraint body(12a) of the pad(12), and wherein an inclination angle of the inclined wall(14) that is the turbulence restraint means(14) is 45 to 70 degrees of an angle.