| 摘要 |
PURPOSE:To obtain molten metal rapid cooled thin hoop having uniform thickness without breakout by forming cooling face profiles of inner circumference mutually at approaching position, as complementally to almost uniformize a gap between roll surface caused by deformation. CONSTITUTION:The cooling face profiles of inner circumferential faces 6 for the inside water cooling rolls 4, which are rotated reversely mutually at approaching position, are formed as arrangement of rib 9 shape or relative indentation 11 and projection 10 faces, to be complementary to deformation of the circumferential face 6 caused by rising temp. at pouring the molten metal 1 and to maintain the gap between the roll surfaces always to almost uniformly. In this way, the thin hoop 5 having uniform thickness produced by rapid cooling for the molten metal 1 is obtd. without breakout. |
