Immersion nozzle for continuous casting.

摘要

In an immersion nozzle for continuous casting, at least one portion of reducing a sectional area of a passage for molten metal is formed in an immersion nozzle near to the bottom of the nozzle and plural discharge ports symmetrically arranged with respect to the axis of the nozzle are arranged above and below the sectional area reducing portion in the longitudinal direction of the nozzle, wherein the sectional area of each of the discharge ports and the sectional area of each molten steel passage corresponding to the respective discharge port satisfy certain specified relations. Further, molten metal is continuously cast by using the above immersion nozzle together with static magnetic field.