PURPOSE: To reduce a molten steel quantity remaining between lower weirs by providing a pair of the lower weirs at the center bottom part in the inner part of a tundish, a raising bottom part on an area surrounded by the weirs and a groove on a part coming into contact with the poured molten steel in an initial stage in the raising bottom part.
CONSTITUTION: The molten steel is poured into the tundish 10 from a ladle 1 through a long nozzle 2 and further into a mold 9 from the tundish 10 through an immersion nozzle 8. In the bottom of the tundish 10 at the center part between the lower weirs 5, the raising bottom part 6a is provided to reduce the residual molten steel remaining at the lower weirs 5. At the part being in contact with the poured molten steel in the initial stage in the raising bottom part 6a, the groove 6b is provided to be a pouring basin part for preventing the spattering of the molten steel in the initial stage of pouring stream.
NAKAMURA YUKIO
OKUDA TSUKASA
TSUTSUMI KAZUHIKO
| JPH0323044A | 1991-01-31 | |||
| JPS5930501A | 1984-02-18 |