ROLLING MILL AND ROLLING METHOD

摘要

PURPOSE:To easily correct the shape of a rolled product by inserting support rolls onto a back up shaft and moving the support roll positions forward and backward in the axial center direction of an upper work roll by moving means. CONSTITUTION:The support rolls 12 having a circular shape are inserted onto the back up shaft 3 supported by back up shaft bearings provided in a housing 10. The positions of the support rolls 12 are previously determined to meet the width of a slab 5 prior to rolling of the slab 5 and a back up roll 4 having back up roll supporting part 4a on the side outer than the width of the slab 5 is previously mounted. The support rolls 12 are slid forward and backward in the axial center direction of the upper work roll and further, the back up roll 4 is exchanged so that the strip 5a attains a desired shape. The pressure of rods for roll bending is thereafter controlled, by which edge wave and middle waviness are prevented.