US 2026/0183818 A1 · DETERMINING THE LATERAL OFFSET OF A METAL STRIP ON THE BASIS OF THE CONTOUR OF AN END FACE OF A COIL

Abstract

A rolling mill that includes at least one roll stand and a pay-off reel arranged upstream of the roll stand. A metal strip is unreeled and rolled in the roll stand. A particular portion (i) of the metal strip has a particular lateral offset (V) at a predetermined distance from the roll stand. A control device determines a particular manipulated variable (C) by evaluating the particular lateral offset (V) for at least one actuator associated with the roll stand, and controls the actuator in accordance with the determined particular manipulated variable (C). Contour information (K) relating to the lateral offset (V) of the portions (i) over the entire length of the metal strip is made available to the control device even before the metal strip is fed to the roll stand, and the control device determines the particular lateral offset (V) based on that contour information (K).

Claims11

Dependent claims

An operating method for a rolling mill which has at least one rolling stand and an uncoiler arranged upstream from the rolling stand,

wherein, in the rolling mill a metal strip coiled into a coil is uncoiled by the uncoiler, is supplied from there to the rolling stand, and is rolled in the rolling stand,
wherein a control device for the rolling stand calculates, utilizing a respective lateral offset (V) which a respective portion (i) of the metal strip has at a predetermined distance upstream from the rolling stand, a respective control variable (C) for at least one actuator associated with the rolling stand, and activates the actuator according to the calculated respective control variable (C), wherein, before the metal strip is un-coiled, a contour (K) of at least one end side of the still coiled-up coil is made known once to the control device such that the information about the lateral offset (V) of the portions (i) over the whole length of the metal strip is already available to the control device before the metal strip is supplied to the rolling stand (1), and in that the control device calculates the respective lateral offset (V) utilizing the contour (K).

A control program product for a control device of a rolling stand for rolling a metal strip, wherein the control program product comprises machine code stored on a non-transitory computer-readable medium, which can be processed by the control device, wherein the processing of the machine code by the control device ensures

that before the metal strip is uncoiled by an uncoiler arranged upstream from the rolling stand, a contour (K) of at least one end side of the still coiled-up coil is made known once to the control device such that the information about a lateral off-set (V) that portions (i) of the metal strip have at a predetermined distance upstream from the rolling stand over the whole length of the metal strip is available to the control device,
that the control device calculates the respective lateral offset (V) utilizing the contour (K) for the portions (i), and
that the control device calculates a respective control variable (C), utilizing the respective lateral off-set (V) for at least one actuator associated with the rolling stand, and activates the actuator according to the calculated respective control variable (C).

Dependencies are inferred from the claim text.

Determining the lateral offset of a metal strip on the basis of the contour of an end face of a coil

Life of this patent

Determining the lateral offset of a metal strip on the basis of the contour of an end face of a coil

Life of this patent

Abstract

Claims11