METHOD AND DEVICE FOR MEASURING AND ADJUSTING THE EVENNESS AND/OR TENSION OF A STAINLESS STEEL STRIP OR STAINLESS STEEL FILM DURING COLD ROLLING IN A 4-ROLL STAND, PARTICULARLY INA 20-ROLL SENDZIMIR ROLL STAND

摘要

A method and device for measuring and adjusting the evenness and/or tension ofa stainless steel strip (1) during cold rolling in a 4-roll stand (2) providedwith at least one control loop (4) comprising several actuators (3), resultingin more precise measurement and adjustment due to the fact that an evennessdefect (10) is determined by comparing a tension vector (8) with a predefinedreference curve (9), whereupon the characteristic of the evenness defect (10)along the width of the strip is broken down into proportional tension vectors(8) in an analysis building block (11) in a mathematically approximated mannerand the evenness defect proportions (C1...Cx) determined by real numericalvalues are supplied to respectively associated control modules (12a; 12b) foractuation of the respective actuator (3).