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Method, device and storage medium for controlling the replenishment amount of phosphating solution in galvanized phosphating

A phosphating solution and replenishment technology, which is applied in the coating process of metal materials, etc., can solve the problems of high labor intensity, increase of total acidity TA, and influence on phosphating film thickness and grain size, so as to reduce labor input, The effect of stabilizing supplementation

Active Publication Date: 2021-03-30
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phosphating plate obtained by galvanizing and phosphating has excellent stamping and coating properties. However, the quality of the phosphating plate depends on the thickness of the phosphating film and the size of the grain. During the galvanizing and phosphating process, with the phosphorus The phosphating solution is continuously consumed, and the content of phosphating solution decreases, which leads to the continuous decrease of free acidity FA and the continuous increase of total acidity TA, which affects the thickness of phosphating film and grain size.
At present, iron and steel plants mainly use manual monitoring to control the amount of phosphating solution replenishment in galvanizing and phosphating. Through manual testing, the total acid and free acid of the phosphating solution are tested every 20 minutes, and the phosphating solution is determined according to the test results. Replenishment amount, there are technical problems such as high labor intensity, large monitoring error and unstable replenishment of phosphating solution

Method used

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  • Method, device and storage medium for controlling the replenishment amount of phosphating solution in galvanized phosphating
  • Method, device and storage medium for controlling the replenishment amount of phosphating solution in galvanized phosphating
  • Method, device and storage medium for controlling the replenishment amount of phosphating solution in galvanized phosphating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The size of the galvanized steel plate is 0.5mm×1250mm, and the running speed of the galvanized steel driven by the unit is 120m / min. L) is:

[0077] V=k×v 钢 ×B×H

[0078] =6.5×10 -3 ×70%×120×1.25

[0079] =0.68

[0080] Converted into unit time, the speed of supplementary metering pump is 0.68L / min. At this time, the film weight of the phosphating film is 1.3g / m 2 , for this moment the free acid point of phosphating bath solution is 1.8, and total acid point is 27.

[0081] This embodiment is also applicable to a device for controlling the supplementary amount of phosphating solution in galvanizing and phosphating and a computer-readable storage medium provided by the present application.

Embodiment 2

[0083] The size of the galvanized steel plate is 0.7mm×936mm, the running speed of the galvanized steel driven by the unit is 110m / min, and the replenishment amount (L) of the phosphating solution is:

[0084] V=k×v 钢 ×B×H

[0085] =6.5×10-3×80%×110×0.936

[0086] =0.54

[0087] Converted into unit time, the speed of supplementary metering pump is 0.54L / min. Now the weight of the phosphating film is 1.4g / m2, because the free acid point of the phosphating bath solution is 1.9, and the total acid point is 26.

[0088] This embodiment is also applicable to a device for controlling the supplementary amount of phosphating solution in galvanizing and phosphating and a computer-readable storage medium provided by the present application.

[0089] Compared with the prior art, the present application has the following characteristics:

[0090] 1. The labor intensity of workers has been greatly reduced, from sampling and analysis every 20 minutes to sampling and analysis every 8 ho...

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Abstract

The invention provides a method and device for controlling the supplementing amount of a phosphating solution in galvanizing phosphatization, and a storage medium. The method comprises the following steps: measuring the running speed and the width of galvanized steel to be phosphated, and the height of the phosphating solution in a phosphating tank, and obtaining the supplementing amount of the phosphating solution according to the measurement result, wherein the calculation formula of the supplementing amount of the phosphating solution is V=k*v steel*B*H, in the formula, V represents the supplementing amount of the phosphating solution, k is a coefficient and is determined by a standard phosphating film, v steel represents the running speed of the galvanized steel, B represents the widthof the galvanized steel, and H represents the percentage of the height of the phosphating solution in the phosphating tank to the total height of the phosphating tank.

Description

technical field [0001] The invention belongs to the field of galvanizing and phosphating, and in particular relates to a method, a device and a storage medium for controlling the supplementary amount of phosphating solution in galvanizing and phosphating in a steel plant. Background technique [0002] Galvanizing and phosphating is a gray film phosphating process for electro-galvanizing, hot-dip galvanizing, zinc plate, etc., in which a phosphating film is formed on the surface of the zinc layer through a chemical reaction in the phosphating solution (dilute solution of phosphate). (insoluble trisystem phosphate film) process. The phosphating plate obtained by galvanizing and phosphating has excellent stamping and coating properties. However, the quality of the phosphating plate depends on the thickness of the phosphating film and the size of the grain. During the galvanizing and phosphating process, with the phosphorus The phosphating solution is continuously consumed, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/86C23C22/77
CPCC23C22/77C23C22/86
Inventor 董蓓魏星刘渊媛陈勇陈明黄全伟彭周余立陈寅
Owner 武汉钢铁有限公司
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