The present invention is interposed between the tundish and the mold during the continuous casting immersion nozzle for guiding the injection of the molten steel relates to the immersion nozzle is lower is designated a hollow shape having a predetermined diameter , and is closed on top is open, the side adjacent to the lower portion of the immersion nozzle and a port in communication with the hollow portion is formed , the immersion the inner lower surface of the nozzle characterized in that it is semi-spherical cap is installed , caused by the tundish slide gate and the height of the bath surface of the vortex phenomenon was remarkably reduced can improve the cast surface quality .
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