Reduction leveling control device and reduction leveling control method

摘要

PROBLEM TO BE SOLVED: To suppress camber generation of a rolled material due to path rolling.SOLUTION: A draft leveling control device 1 comprises: a camber amount measuring part 2, which measures a camber amount on the first rolling path inlet side of a rolled material 20 subjected this time to a plurality of path rolling by a rolling device 10; an arithmetic processing part 5, which sets a camber predicted amount on each rolling path outlet side by a plurality of path rollings, on the basis a measured camber amount on the first measured rolling path inlet side, an influence coefficient, which indicates a degree that the draft leveling operation of each rolling path influences a change in the camber amount of the rolled material on each rolling path outlet side by a plurality of path rollings, and a candidate of the draft leveling amount of each rolling paths upon a plurality of path rollings, and calculates a candidate of the draft leveling amount when a total value of all rolling paths of the camber predicted amount becomes minimum as the draft leveling amount of each rolling path upon a plurality of path rollings; and a control part 6 which controls the draft leveling amount of a rolling path on the basis of the draft leveling amount of each rolling path.SELECTED DRAWING: Figure 1