A dynamic specification variable control method for tandem cold rolling mill

A technology of dynamically changing specification and cold tandem rolling mill, which is applied in the direction of rolling mill control device, metal rolling, metal rolling, etc., and can solve the problem of unsatisfactory control of dynamic specification changing

Active Publication Date: 2017-02-08
WISDRI WUHAN AUTOMATION
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  • Abstract
  • Description
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Problems solved by technology

[0016] The main logical functional units that complete the dynamic gauge change control at the basic automation layer include roll gap control, speed control, and tension control. Logical functional units such as control and online inspection instruments are closely related, so it is not ideal to optimize dynamic variable specification control only by L2

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  • A dynamic specification variable control method for tandem cold rolling mill
  • A dynamic specification variable control method for tandem cold rolling mill
  • A dynamic specification variable control method for tandem cold rolling mill

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Embodiment Construction

[0104] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0105] figure 1 It is a schematic diagram of part of the equipment of the five-stand tandem cold rolling mill in the combined pickling and rolling mill used in this embodiment.

[0106] The steps of the control method for dynamically changing specifications in this embodiment are as follows:

[0107] 1. Firstly, select the transition area where the specification changes dynamically.

[0108] During specification change control, the distance from the strip steel change specification transition zone to each frame is tracked, and the distance is constantly changing when the unit is running.

[0109...

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Abstract

The invention discloses a dynamic gauge change control method of a cold tandem rolling mill, comprising the following steps: determining the transition area of ​​the dynamic gauge change; The rolling thickness of this stand is set to calculate the transition coefficient; when the transition process occurs, calculate the dynamically adjusted roll gap setting value of each stand according to the transition coefficient, and adjust the strip outlet of each stand according to the countercurrent speed. The method of the invention can optimize the dynamic specification change process of the five-stand cold tandem rolling mill, improve the smoothness of the dynamic specification change, reduce equipment impact, reduce strip out-of-tolerance, increase the dynamic specification change speed, and reduce the dynamic specification change time.

Description

technical field [0001] The invention relates to metallurgical automation technology, in particular to a dynamic specification-variable control method of a cold tandem rolling mill. Background technique [0002] The fully continuous tandem cold rolling mill can not only roll the same raw material into products with the same or different thicknesses, but also roll different raw materials into products with the same or different thicknesses, which requires that it can be dynamically rolled during the rolling process. The realization of product specification transformation. Because if the specification change cannot be completed while the rolling mill is rolling, but must be realized by shutting down, it cannot be called fully continuous rolling. Therefore, the dynamic specification change is very important for realizing the full continuous rolling method. It is not only the most obvious feature of the full continuous cold rolling mill to distinguish the conventional cold rolli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00
Inventor 王利国王胜勇卢家斌
Owner WISDRI WUHAN AUTOMATION
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