| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid the occurrence of BO (breakout) to carry out stable casting in a twin roll type continuous casting machine carrying out casting in a state of winding a cast slab around one roll. <P>SOLUTION: This twin roll type continuous casting machine is adapted to supply molten steel 14 between the peripheral surfaces of a pair of rolls 11a, 11b rotated in reverse directions to each other and to carry out casting in the state of winding, around the one roll 11b, the cast slab 18 with an unsolidified part 17 left between solidified shells 16a, 16b solidified on the peripheral surfaces of the respective rolls. A discharge port 15 of a molten metal injection nozzle 13 for supplying the molten steel between the peripheral surfaces of the pair of rolls 11a, 11b is opened only toward the roll 11b on the wound side of the cast slab 18 with the unsolidified part 17 left. <P>COPYRIGHT: (C)2012,JPO&INPIT |
