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Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine

A straightness, special steel technology, applied in length measuring devices, chemical instruments and methods, cement mixing devices, etc., to eliminate mutual influence, save time, and reduce burdens

Active Publication Date: 2007-06-13
SMS DEMAG AG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This approach also does not take into account the flatness defects that occur in practice and their own occurrence

Method used

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  • Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine
  • Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine
  • Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine

Examples

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Embodiment Construction

[0041] According to FIG. 1, a special steel strip 1 or a special steel foil 1a is rolled by rolling, rolling and coiling in a multi-roll stand 2 in a 20-high Sendzimir rolling mill 2a. In this case, the roll set 2b forms a split structure. The upper roller group 2b can be adjusted by an actuator 3 and other functions. The signal to be described is processed in a control loop 4 ( FIGS. 6-9 ). These signals come from the inlet 5a before the rolling process and from the outlet 5b after rolling and are obtained by means of flatness measuring elements 6 which in this embodiment consist of flatness measuring elements 6 Degree measuring roller 6a constitutes.

[0042] In FIG. 2, a hydraulic adjustment mechanism 17 is shown as an actuator for the upper roll set 2b. In order to affect the flatness of the strip, as the actuator 3, the hydraulic adjustment mechanism 17 can be rotated (only applied in the split structure form), the outer support rollers 18 (A, B, C, D, wherein the suppor...

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Abstract

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 (C1...Cx) determined by real numerical values are supplied to respectively associated control modules (12a; 12b) for actuation of the respective actuator (3).

Description

technical field [0001] The invention relates to a method for controlling the flatness of special steel strips or special steel foils during cold rolling in a multi-roll stand, in particular a 20-high Sendzimir mill, with at least one control circuit comprising a plurality of actuators and / or a method and a device for measuring and regulating the strip stress, wherein in the outlet of the multi-roll stand by means of a flatness measuring element according to the strip stress distribution in the strip width range The condition measures the current strip flatness. [0002] The described multi-roll stand includes a split construction or a monolithic construction, wherein the upper set and the lower set of rolls can be adjusted independently of each other and different stand frames can thus be produced. Background technique [0003] The method described at the outset is disclosed in EP 0 349 885 B1 and comprises the formation of measured values ​​characterizing the flatness, in ...

Claims

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Application Information

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IPC IPC(8): B21B37/42B21B13/14B21B37/28B28C5/12
CPCB21B13/147B21B37/28B21B38/02B21B37/42B21B37/48B21B38/06
Inventor M·克鲁杰O·N·杰普森M·布鲁尔
Owner SMS DEMAG AG
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