| 摘要 |
PURPOSE:To stabilize operation of continuous casting by starting pouring of molten metal while wearing by grinding a side dam with inner part cooling roll and successively, changing sending speed of the side dam in accordance with variety of casting direction. CONSTITUTION:To one pair of the rotating cooling rolls 1a, 1b, the side dams 3a, 3b as vertically shiftable are arranged. In the whole thickness of the side dam 3a, 3b, a part W1 at the inner part is made to the thickness set on the circumferential face of the roll and a part W2 at the outer part is slidingly brought into contact with the side faces of the rolls. In the case of starting casting, before pouring molten metal, the rotation of the rolls and sending of the side dams are executed, and the casting is started at the time, when the lower edges 13 of the dams come to the suitable position. Successively, the sending speeds of the side dams 3a, 3b are controlled based on edge shape of a casting strip 4. By this method, as leakage of the molten metal in the side dam can be surely prevented, the operation of continuous casting is stabilized. |
