公开(公告)号：US11173529B2

公开(公告)日：2021-11-16

申请号：US16078650

申请日：2017-01-26

Applicant: Primetals Technologies Austria GmbH

Inventor： Ansgar Grüss ,  Bernd Linzer

IPC: B21B38/10 ,  B21B37/58 ,  B21B38/04 ,  B21B39/08 ,  G05B19/05 ,  G05B19/4155

Abstract: In a normal operation of a roll stand (e.g. 4) of a roll train, working rolls (10) of the roll stand (4) are adjusted to a roll gap (s4) by adjusting a control element position (p4) of a control element (14) of the roll stand (4), such that the working rolls (10) roll the metal band (5). To determine the control element position (p4) to be adjusted, a calibration value (sC4) of the respective roll stand (4), further status parameters (P4) of the roll stand (4) and a target roll gap (s4*) are specified to a model (15) of the roll stand (4). The model (15) determines the control element position (p4) to be adjusted therefrom. In the calibration operation, a control element position (p4) is initially adjusted such that the metal band (5) passes through the roll stand (4) without being rolled. The control element position (p4) is varied such that the working rolls (10) roll the metal band (5). A thickness (d) of the metal band (5) is detected by a downstream thickness-measuring device (9). The thickness (d), further status parameters (P4) and the control element position (p4) are supplied to the model (15), which determines the calibration value (sC4) of the respective roll stand (4) therefrom. Subsequently, normal operation is resumed and the previously determined calibration value (sC4) is used to determine control element positions (p4) to be adjusted as the calibration value (sC4) of the respective roll stand (4).

公开(公告)号：US10081041B2

公开(公告)日：2018-09-25

申请号：US14651411

申请日：2013-11-25

Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

Inventor： Rainer Burger ,  Ansgar Grüss ,  Helmut Hlobil ,  Peter Hunt ,  Robert Linsbod

IPC: G01N3/20 ,  B21B38/02 ,  G01B11/24 ,  B21C51/00 ,  G01B11/30 ,  G01B21/20 ,  G01B11/16 ,  B21B3/00

CPC classification number: B21B38/02 ,  B21B2003/001 ,  B21B2261/06 ,  B21C51/00 ,  G01B11/16 ,  G01B11/24 ,  G01B11/306 ,  G01B21/20 ,  G01N3/20

Abstract: A method and apparatus for flatness measuring and measuring of residual stresses in a metallic flat product (1): The method includes bending the flat product (1) in a bending device (3) such that a planar flat product (1) forms an arc (5) with a target bending radius r0 after bending; measuring the contour and the actual bending radii r(y), in the region of the arc (5) of the bent flat product (1) at a plurality of positions along the width direction of the flat product (1); and determining the flatness of the flat product (1) taking into account the measured contour of the bent flat product (1).