Patent ID: 8386066
Filing Date: 2013-02-26
Classification: B21B,Y10T

Abstract:
1. A method for suppressing the influence of roll eccentricities on a run-out thickness of a rolling stock item, that passes through a rolling stand having a support roll, a work roll and a screwdown device operable for regulating a screwdown position of the rolling stand, comprising: measuring a tensile force value prevailing in the rolling stock item; measuring a rotational speed value of one of the rolls; measuring a thickness value of the rolling stock item; determining a screwdown position of the screwdown device; converting the tensile force value to a run-out thickness; comparing the run-out thickness based on the tensile force value with a run-out thickness determined with a process model; identifying the roll eccentricities via the process model; effecting a run-in thickness compensation; and generating a correction signal for at least one control device for a final control element of the rolling stand.