PLATE ROLLING METHOD BY WORK ROLL SHIFTING MILL

摘要

PURPOSE:To prevent the worsening of a plate crown by forecasting a roll crown profile from the arithmetic values of the abrasion profile of a work roll and the heat crown profile and by selecting the change and stoppage of a roll shifting based thereupon. CONSTITUTION:A rolling load and rolling length are measured by a load cell L and roll revolution meter R and further the temp. of the material to be rolled by a thermometer T. The abrasion of a work roll 1 is calculated by the prescribed equation with inputting these detecting signals into a computer C. The heat crown of the roll 1 is calculated by the computer C from the temp. detected value and rolling and pitching times then. The profile of a roll crown is forecasted on each rolling from the calculated both profiles and at the time when this forecasted profile is made a recessed crown the selection of the shifting change and stoppage is performed. The worsening of a plate crown is prevented simply and effectively with said method.