| 摘要 |
PURPOSE:To prevent leakage of a molten metal between block molds and between adjacent casting molds in a continuous casting device of a moving mold type by operating the continuous casting while pressing a set of block molds forming the casting mold with pinch rolls. CONSTITUTION:A molten steel 24 is charged into many sets of casting molds, each one set of which consists of an upper block mold 11 and a lower block mold 12 having a casting cavity 13. The molds are circulated and moved in a direction B and a continuous casting billet 24a is cast. The molds 11, 12 of 2 sets of the blocks on a feed nozzle 26 side are pressed by means of 2 sets of pinch rolls 20, 21 and 22, 23 and the rotating speed of the rolls 20, 21 on the nozzle 26 side is made higher than the rotating speed of the next rolls 22, 23 to apply a face pressure on the contact surface C of both molds. The leakage of the molten metal through the contact surface of the blocks 11, 12 and the contact surface of the adjacent molds is obviated and the continuous casting billet 24a having an excellent shape and quality is cast. |
