| 摘要 |
PROBLEM TO BE SOLVED: To provide an immersion nozzle for preventing the coasening of inclusion in molten steel in a mold and the worsening of cleanliness by adsorbing oxide-based inclusion essentially comprising alumina in the molten steel to prevent the mixture into the molten steel and by eliminating material easily reacting with the molten steel in the inner wall of the nozzle. SOLUTION: This immersion nozzle 1 uses Al<SB>2</SB>O<SB>3</SB>-C material hardly reacting with the inclusion in the molten steel on the lining part 5 of a vertical passage 6 in the immersion nozzle at the inner wall portion of the nozzle, brought into contact with the molten steel at the steel discharging hole of a tundish for supplying the molten steel into the mold for continuous casting, and on the inner wall of a spouting hole part 4 disposed at the lower part of the vertical passage 6, brought into contact with the molten steel. COPYRIGHT: (C)2004,JPO
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