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
CN1980752AActive Publication Date: 2007-06-13SMS DEMAG AG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SMS DEMAG AG
Publication Date
2007-06-13

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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).
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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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