HOT ROLLING METHOD

PURPOSE:To reduce a sheet crown through a rolling cycle by only setting a proper initial crown on a work roll by changing a shifting pitch during the rolling cycle in work-roll shifting rolling. CONSTITUTION:In case of rolling while cyclically shifting work rolls 1,1' by a hot rolling mill having a function of shifting the work rolls 1,1' in the axial directions, the shifting pitch is changed during the rolling cycle. Here, the distance (x) between the center 0 of a sheet in its width direction and each of the barrel centers of rolls 1,1' at both of a right driving side and the other operation side is defined as the roll shifting quantity. And the stepwise increasing or decreasing increment of a quantity (x) per unit rolling-coil is defined as a shifting pitch in the repeat of a shifting operation for increasing stepwise the quantity (x) at every fixed number of coils till its reaches the maximum 100mm, for instance, and decreasing thereafter.