| 摘要 |
PURPOSE:To draw out completely a residual molten steel in a tundish, at the time of finishing the pouring of a molten steel, by removing slag by sucking it at the time of finishing the pouring, in pouring the molten steel into a mold from a ladle through the tundish. CONSTITUTION:A molten steel S is charged into a tundish 1 from a ladle 2 through a ladle nozzle 3 and a long nozzle 4, and is poured into molds 6 from tundish nozzles 5. Here, the surface of molten steel S is a range of the molten steel S poured from the nozzle 3, is partitioned by an upper weir 7 sagged from the upper part in the tundish 1, to prevent the dispersion of slag Sl, contained in the poured molten steel. Then, when the charging of molten steel from the ladle 2 to the tundish 1 is finished, immediately before or after the finish of charging; the pouring of molten steel from the tundish 1 into the molds 6, is continued while removing the slag especially from the inside of weir 7 by a suction-type slag remover 8. And when the surface of residual molten steel in the tundish 1 descends lower than the weir 7, the pouring is continued till the residual molten steel is drawn out completely while removing th slag from the whole surface of molten metal, before withdrawing the empty tundish 1. |
