| 摘要 |
The present invention provides a hot-rolling method for a metal strip by a cyclic shift method in which the work rolls are shifted in the axial direction, wherein the rolling method affords a metal strip having a good profile in the width direction, in instances in which the rolled material currently in the rolling cycle is a wide rolled material following a narrow rolled material. According to this hot-rolling method for a metal strip, for a rolled material currently in the rolling cycle, the work rolls are shifted by a constant pitch for each single rolled material while reciprocating between predetermined folding locations, by means of a rolling machine equipped with a shift mechanism for shifting the work rolls in the axial direction. When a rolled material wider than the preceding rolled material is to be rolled, rolling is carried out at a work roll shift position modified such that an evaluation function (JΔCR) calculated from the difference between the predicted value and the target value of the roll crown is minimized. |
