| 摘要 |
<P>PROBLEM TO BE SOLVED: To establish a pressure of a pinch roll as a proper value based on a load of a light rolling reduction roll before and after a casting direction of a pinch roll, and thereby to perform light rolling reduction on a proper condition in a method of carrying out light rolling reduction of a cast slab using a light rolling reduction zone of a roll segment system in which a pinch roll has been arranged aiming at reducing center segregation of a cast slab. <P>SOLUTION: The light rolling reduction controlling method is characterized as follows. A light rolling reduction zone which consists of a roll segment 15 in which a pair of pinch rolls 21 and two or more pairs of reduction rolls 6 have been included at least is used, in carrying out reduction of a cast slab 10 of a solidification last stage by a rolling draft of the amount of solidification shrinkage, a load which works to the roll segment is measured at least two sections of an upstream side section and a downstream side section of the roll segment, and a pushing pressure of the pinch roll is established based on a measured load. <P>COPYRIGHT: (C)2012,JPO&INPIT |
