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 in a 20-Roll Sendzimir Roll Stand

摘要

A method and device for measuring and adjusting the evenness and/or tension of a stainless steel strip ( 1 ) during cold rolling in a 4-roll stand ( 2 ) provided with at least one control loop ( 4 ) comprising several actuators ( 3 ), resulting in more precise measurement and adjustment due to the fact that an evenness defect ( 10 ) is determined by comparing a tension vector ( 8 ) with a predefined reference 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 manner and the evenness defect proportions (C 1 . . . Cx) determined by real numerical values are supplied to respectively associated control modules ( 12 a; 12 b) for actuation of the respective actuator ( 3 ).