| 摘要 |
PURPOSE:To remove effectively the nonmetallic inclusion in a molten metal without providing particularly a gate by supplying the molten metal into a mold in such a way that the ratio between the distance from the receiving to tapping position of the molten metal in a tundish and the depth of the molten metal in the tundish attains a prescribed value or above. CONSTITUTION:A molten metal 4 is introduced through a long nozzle 3 from a ladle 2 into a tundish 1 having no gate, and the molten metal 4 is cast from the tapping position into a mold for continuous casting. The metal 4 is supplied into the mold in this case under the condition under which the ratio L/H of the distance L from the receiving to tapping position of the tundish 1 and the depth H of the molten metal 4 in the tundish 1 attains >=8. The depth H of the metal 4 is regulated preferably to about >=400mm.. The generation of sliver flaws is throughly eliminated and the nonmetallic inclusion is effectively removed. In the case of a T-type tundish, L1+L2=L, as shown in the figure. |
