Method for operating an annealing furnace for annealing metal strip

A technology for metal strips and annealing furnaces, applied in furnaces, furnace types, furnace components, etc., and can solve problems such as the influence of strips

Active Publication Date: 2020-07-31
SMS GRP GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This fluctuation also has an effect on the annealed strip

Method used

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  • Method for operating an annealing furnace for annealing metal strip
  • Method for operating an annealing furnace for annealing metal strip
  • Method for operating an annealing furnace for annealing metal strip

Examples

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Embodiment Construction

[0022] The invention is explained in detail below in the form of an embodiment with reference to the mentioned drawings. In all the figures, the capital letter T designates not only the individual temperature values ​​but also the temperature distribution of the metal strip 200 (hereinafter also simply referred to as strip) over its length.

[0023] The control circuit comprises in particular a measuring device 110 for measuring the actual temperature distribution of the metal strip over its strip length, preferably in the annealing furnace. The actual temperature distribution resulting from the measurement T Ist In the comparison device 120 with the predetermined theoretical temperature distribution T of the metal strip 200 over its length Soll Compare. A possible control deviation e resulting from the comparison, or rather the formation of the difference, is supplied as an input variable to controller 130 . The controller 130 calculates a control signal T for the heating ...

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Abstract

The invention relates to a method for operating an annealing furnace for cooling a metal strip, comprising the following steps: specifying a desired temperature distribution for the metal strip over the length of the strip and controlling the actual temperature distribution for the metal strip over the length of the strip to the specified desired temperature distribution in the annealing furnace. To compensate for possible variations of the set of material properties of the metal strip over the length of the strip, the method according to the invention provides that the desired temperature distribution to be specified for the control is determined as follows: specifying strip data of the metal strip to be annealed; selecting a distribution of the actual material properties of the metal strip over the length of the strip before it enters the annealing furnace from a plurality of stored or adapted actual material properties on the basis of the strip data; and selecting the desired temperature distribution to be specified for the control for the metal strip over the length of the strip as the desired temperature distribution for the metal strip that is assigned to the selected actual set of material properties of the metal strip.

Description

technical field [0001] The invention relates to a method for operating an annealing furnace for annealing metal strips. Background technique [0002] Such methods are basically known in the prior art. [0003] Thus, German laid-open document DE 10 2013 225 579 A1 discloses a method for controlling or regulating an annealing furnace for metallic materials in a production line. The production line includes an annealing furnace and at least one measuring device suitable for detecting at least one material property of the strip material to be processed in the production line. The annealing furnace and the measuring device work together in the control loop of the automated process control. The published documents teach in particular that the measuring device is arranged downstream of the annealing furnace in the material processing direction and detects measured values ​​in-line, which represent mechanical material properties of the strip material. The measured values ​​are th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/02C21D9/54F27D19/00
CPCC21D8/02C21D9/54F27D2019/0003F27D2019/0028
Inventor U·左默斯L·屈梅尔C·A·克莱恩
Owner SMS GRP GMBH
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