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Optimal Control Method of Air Knife Distance in Galvanizing Production

An air knife distance, optimization control technology, applied in hot-dip plating process, coating, metal material coating process, etc., can solve the problems of air knife pressure adjustment saturation, front and rear coating deviation, etc.

Active Publication Date: 2018-10-02
ZHEJIANG SUPCON RES
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem of front and rear coating deviation and air knife pressure regulation saturation in the feedback control of galvanizing production

Method used

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  • Optimal Control Method of Air Knife Distance in Galvanizing Production
  • Optimal Control Method of Air Knife Distance in Galvanizing Production
  • Optimal Control Method of Air Knife Distance in Galvanizing Production

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Embodiment Construction

[0047] The following will combine Figure 1 to Figure 4 The air knife distance optimization control method for galvanizing production provided by the present invention is described in detail, which is an optional embodiment of the present invention, and it can be considered that those skilled in the art can make it within the scope of not changing the spirit and content of the present invention. Make revisions and polish.

[0048] First of all, the relevant problems and solutions in the prior art are described first:

[0049] Galvanized products are widely used in construction, home appliances, automobiles and other industries due to their good corrosion resistance. Too thick a coating will not only waste raw materials such as zinc ingots, but also affect the spot weldability, adhesion, and anti-powdering of the coating. Properties such as resistance, but too thin coating will affect the corrosion resistance of the product, and the product quality cannot meet the standard. T...

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Abstract

The invention provides an air knife distance optimization control method applied to galvanization production and aims to overcome working condition deviation of the production line or thickness deviation, caused by other factors, of a front galvanized layer and a rear galvanized layer, to guarantee the uniformity of the front galvanized layer and the rear galvanized layer and also to optimize the air knife distance when the pressure of each air knife is within a saturation critical area so as to guarantee the air knife pressure adjustment margin during feedback control. When the front galvanized layer and the rear galvanized layer are different in thickness, the thickness deviation mean value of the front galvanized layer and the rear galvanized layer within a counted time is taken as input to calculate a corrected value of the distance of front and rear air knifes by virtue of a neural network so as to respectively adjust the distance between the air knifes at the front and rear sides; when the pressure of each air knife is within a saturation region, a reasonable distance of the front and rear air knifes is calculated based on a neural network mode, the current air knife pressure, the current air knife distance, the air knife pressure preset margin and the speed of the production line so as to obtain an air knife pressure set value and an air knife distance set value which satisfy the current control precision and also have adjustment margin.

Description

technical field [0001] The invention relates to the field of galvanizing production, in particular to a method for optimally controlling the distance of an air knife in galvanizing production. Background technique [0002] Entering the 21st century, our country is moving from a big steel country to a strong steel country. Adjusting industrial structure, developing deep processing and high value-added products, and improving product competitiveness are the development directions of my country's iron and steel industry. [0003] However, according to statistics, metal products discarded due to corrosion in my country account for one-third of the world's total annual metal output, which shows that solving the corrosion problem of steel has very important economic significance for our country. The galvanizing process can effectively prevent steel corrosion and prolong the service life. The quality of the coating is the focus of attention and assessment of the downstream automob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/20C23C2/06
CPCC23C2/06C23C2/20
Inventor 王绍亮周玄昊陈鹏潘再生施一明王天林
Owner ZHEJIANG SUPCON RES
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