METHOD FOR CONTROLLING SHEET CROWN AND SHAPE IN SHEET ROLLING

摘要

PURPOSE: To exclude change by manual intervention of an operator and set a crown controller with a high precisin by determining the amount of change of a crown controller corresponding to the change of rolling conditions between a preceding rolled stock and the succeeding rolled stock and taking the set value of the crown controller of the succeeding rolled stock as a value that is actual value of the preceding rolled stock that the amount of change is added. ;CONSTITUTION: In a tandem mill which consists of seven rolling mills 1, a roll bending device 2 and roll shifting device 3 are provided as a crown controller on a 3rd to a 7th stand, sheet crown/shape control is executed and a sheet crown measuring device 4 is provided on the outlet side of the 7th stand. And, in the crown control, the bender load of the roll bending device 2 is controlled and the bender load FWSETN of the succeeding rolled stock is determined by the equation I. Where, FWAN^-1: the actual bender load of the preceding rolled stock, FWAN: the bender load of the next rolled stock of a predicting model, FWN^-1: the bender load of the preceding rolled stock of the predicting model.;COPYRIGHT: (C)1996,JPO