| 摘要 |
PROBLEM TO BE SOLVED: To provide an immersion nozzle capable of suppressing the deposition of alumina even when reducing the blowing quantity of nitrogen gas and Ar gas to be blown into a molten metal pouring hole or without blowing the gas such as the nitrogen gas or the Ar gas in a continuous casting. SOLUTION: In the immersion nozzle nozzle for continuous casting provided with one pair of spouting holes 4, 4 symmetrical to the axis of the immersion nozzle 1 on a side wall part 2, the bottom surface level at the position, where the surface passing through the center positions of two spouting holes and parallel to the axis in the longitudinal direction of the immersion nozzle is crossed to the inner surface at the bottom part 3 of the immersion nozzle, is made highest, and the bottom surface level at the position, where the surface crossed orthogonally to the straight line connecting the center position of the two spouting hole and passing through the axis of the immersion nozzle is crossed to the inner surface on the side wall part of the immersion nozzle, is made lowest, thereby inclining the inner surface at the bottom part of the immersion nozzle. COPYRIGHT: (C)2005,JPO&NCIPI
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