| 摘要 |
PROBLEM TO BE SOLVED: To pour the highly stabilized high cleanness steel with using a tundish reusable while being at hot state. SOLUTION: When continuously casting with using the tundish arranged with a tundish gate 20 erected elevatable on the bottom wall of a tundish main body 10 in which the inside is open space without a fixed gate, the set position and height of tundish gate 20 are controlled under the condition that the relation (0.007×L<=D<=0.02×L) and the relation 0.33×H<=h<=0.67×H are satisfied. In the relations, D is a horizontal distance (mm) from molten steel pouring flow of ladle to tundish gate, (h) is a height (mm) from tundish bottom wall to top face of tundish gate, L is a horizontal distance (mm) from pouring flow of ladle to outlet hole to mold for continuous casting, H is a depth of steel bath in tundish.
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