METHOD FOR CONTROLLING EDGE DROP IN COLD ROLLING

摘要

PURPOSE:To improve the effect of fluctuation in width on deviation of edge drop, to enable controlling edge drop after cold rolling constant and to stably manufacture the products of rolled cold strip with the small deviation of thickness in the breadthwise direction. CONSTITUTION:The width of a material to be rolled is measured and also the amount of edge drop in the breadthwise end parts of the material to be rolled is measured after a stand in which a rolling mill 21 with a pair of shiftable working rolls 21A is arranged. The above-mentioned position for measuring the amount of edge drop is changed from the difference of width in the material to be rolled to the width of the final product, the deviation of edge drop of the measured amount of edge drop and target amount of edge drop is determined and the shifting position of the working rolls 21A is changed based on that deviation of edge drop.