Optimization method for hot rolled strip steel roll gap model

A hot-rolled strip steel and optimization method technology, applied in the direction of rolling force/roll gap control, etc., can solve the problems of roll gap zero point drift and low precision of roll gap self-learning model, so as to improve the setting accuracy and optimize the model structure Effect

Inactive Publication Date: 2013-01-30
ANGANG STEEL CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for optimizing the roll gap model of hot-rolled strip steel, which can solve the problem of zero point drift of the roll gap of the bouncing model in the rolling process and the

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  • Optimization method for hot rolled strip steel roll gap model
  • Optimization method for hot rolled strip steel roll gap model
  • Optimization method for hot rolled strip steel roll gap model

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawing.

[0033] A hot-rolled strip steel roll gap model optimization method applied in the hot rolling production process. The present invention optimizes the roll gap setting calculation model structure; improves the roll gap self-learning data processing method, and optimizes the roll gap self-learning method, which can effectively Improving the setting accuracy of hot strip roll gap model.

[0034] The specific steps of the roll gap setting calculation model structure of the present invention will be described in detail below.

[0035] (1) Considering the influence of roll gap zero point drift, optimize the calculation model structure of roll gap setting.

[0036] The original roll gap setting calculation model is as follows:

[0037] Gap = Fh - ( S - ...

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Abstract

The invention discloses an optimization method for a hot rolled strip steel roll gap model. According to the optimization method, a roll gap setting and calculating model structure is optimized, a roll gap zero drift compensation is increased, and a roll gap zero drift offset existent in a process of calculating a roll gap setting value is reduced; and meanwhile, a data processing method for roll gap self-learning is improved as follows: oscillation of roll gap self-learning is reduced by utilizing a roll gap self-learning data screening method for removing an extremal rolling force and an extremal roll gap at the same time and a combination method of short-time genetic learning and long-time genetic learning mechanisms. Due to the adoption of the optimization method, so that accuracy of the roll gap setting value and effectiveness of roll gap self-learning are guaranteed, calculation precision of the roll gap model is greatly improved, and thickness precision of a finished-product hot rolled strip steel is further improved.

Description

technical field [0001] The invention belongs to the technical field of steel rolling automatic control, and in particular relates to a method for optimizing a roll gap model of hot-rolled strip steel. Background technique [0002] As an important quality index to measure plate and strip, thickness accuracy has become the focus of general attention in the metallurgical industry at home and abroad. One of the root causes of strip thickness fluctuations is due to fluctuations in the rolling mill roll gap. Therefore, the main reason for the thickness deviation of the strip is the problem of the roll gap, and the setting accuracy of the roll gap will directly affect the final rolling dimensional accuracy of the product. [0003] The mill bounce curve is the core basis for setting the roll gap. The roll gap value corresponding to the bounce curve under zero pressure is the zero point roll gap of the bounce curve. The zero point is not constant, it will gradually drift during th...

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Application Information

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IPC IPC(8): B21B37/58
Inventor 费静王军生陈百红张岩李文斌宋宝宇秦大伟宋君王奎越
Owner ANGANG STEEL CO LTD
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