Method and device for measuring and regulating the planarity and / or the tensions of a stainless steel strip or a stainless steel sheet in cold rolling a box of multiple rolls, particularly in a rolling mill 20 sendzimir rolls.

摘要

Method for measuring and regulating the planarity and / or the tensions of a stainless steel strip (1) or a stainless steel sheet (1a), for the operation of cold rolling in a roller case multiple ( 2), in particular in a Sendzimir rolling mill (2a) of 20 rolls, comprising the steps of: determining the current distribution of the planarity (22) of the steel strip, over its width (7) based a web tension measurement, distributed bandwidth (7), the output (5b) of the box multiple roll (2); determining a planarity error (10) by comparing the determined current distribution of the planarity (22) with a predetermined reference curve (9); mathematical approximation flatness error (10) received over the width of the strip (7) in an analysis module (11) and the error decomposition approximate planarity in scalar components flatness error (C1, C2, C3, C4); and calculating a first and a next signal output only from components flatness error, for activating a plurality of adjusting elements (3, 14a, 17, 18, 19) of the box multiple rollers (2); wherein the error decomposition approximate planarity is performed so that the error components resulting planarity (C1, C2, C3, C4) are orthogonal to each other; for adjusting the roll set (2b), a first adjusting element as a means of hydraulic adjustment (17) of the plurality of setting items in response activates the first output signal of regulation, it is obtained from a first orthogonal component (C1) of the planarity error; calculating other signals output only as scalar components of adjustment variables, based on one of the respective components remaining orthogonal (C2, C3, C4) of the planarity error; and the combination of the scalar components of adjustment variables, in signals suitable activation, for the elements of individual adjustment of the eccentric (14a) of the rollers outer support (18) of the box multiple rollers, the plurality of setting items.