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Steel surface fluoroferrite conversion plating solution and preparation method thereof

A technology of fluoroferrate and steel surface, applied in the coating process of metal materials, etc., can solve the problems of polluting water bodies and affecting human health, etc., and achieve the effect of corrosion resistance time change, color without yellowing, and long corrosion resistance time

Inactive Publication Date: 2016-08-17
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphating treatment will discharge a large amount of phosphate, heavy metal ions and nitrite, among which a large amount of phosphate will cause eutrophication of the water body, heavy metals will pollute the water body, enrich through the biological chain, and affect human health

Method used

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  • Steel surface fluoroferrite conversion plating solution and preparation method thereof

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Embodiment 1

[0019] A fluoroferrite conversion plating solution for iron and steel surface, which is made of the following components in parts by weight: 12 parts of sulfuric acid, 13 parts of nitric acid, 7 parts of citric acid, 7 parts of sodium silicate, 8 parts of zinc nitrate, and nitric acid 9 parts of copper, 11 parts of hydrogen peroxide, 9 parts of sodium fluoride, 9 parts of ammonium persulfate, 9 parts of potassium molybdate, 12 parts of nano potassium bromate, 9 parts of nano potassium chlorate, 12 parts of ethanol, and 23 parts of water.

[0020] A preparation method of fluoroferrite conversion plating solution on steel surface, comprising the following steps:

[0021] (1) Add nano-potassium bromate and nano-potassium chlorate to water, place them in an ultrasonic stirrer at a temperature of 36°C, a power of 17.3kHZ, and stir for 7 minutes;

[0022] (2) Add ammonium persulfate, potassium molybdate and ethanol to the ultrasonic stirrer described in step (1), the temperature in the ult...

Embodiment 2

[0026] A fluoroferrite conversion plating solution for iron and steel surface, which is made of the following components in parts by weight: 22 parts of sulfuric acid, 17 parts of nitric acid, 16 parts of citric acid, 18 parts of sodium silicate, 14 parts of zinc nitrate, and nitric acid 17 parts of copper, 26 parts of hydrogen peroxide, 17 parts of sodium fluoride, 18 parts of ammonium persulfate, 21 parts of potassium molybdate, 24 parts of nano potassium bromate, 12 parts of nano potassium chlorate, 28 parts of ethanol, and 43 parts of water.

[0027] A preparation method of fluoroferrite conversion plating solution on steel surface, comprising the following steps:

[0028] (1) Add nano-potassium bromate and nano-potassium chlorate into water, place in an ultrasonic stirrer, temperature is 41℃, power is 19.2kHZ, and stir for 15 minutes;

[0029] (2) Add ammonium persulfate, potassium molybdate and ethanol to the ultrasonic stirrer described in step (1), the temperature in the ultr...

Embodiment 3

[0033] A fluoroferrite conversion plating solution for iron and steel surface, which is made of the following components in parts by weight: 26 parts of sulfuric acid, 22 parts of nitric acid, 19 parts of citric acid, 21 parts of sodium silicate, 17 parts of zinc nitrate, and nitric acid 22 parts of copper, 32 parts of hydrogen peroxide, 23 parts of sodium fluoride, 21 parts of ammonium persulfate, 26 parts of potassium molybdate, 31 parts of nano potassium bromate, 17 parts of nano potassium chlorate, 36 parts of ethanol, and 48 parts of water.

[0034] A preparation method of fluoroferrite conversion plating solution on steel surface, comprising the following steps:

[0035] (1) Add nano-potassium bromate and nano-potassium chlorate to water, place in an ultrasonic stirrer, temperature is 45℃, power is 20.4kHZ, stir for 18 minutes;

[0036] (2) Add ammonium persulfate, potassium molybdate and ethanol to the ultrasonic stirrer described in step (1), the temperature in the ultrasonic...

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Abstract

The invention discloses a fluoroferrate conversion plating solution for iron and steel surfaces and a preparation method thereof, which is prepared by mixing the following components in parts by weight: 12-26 parts of sulfuric acid, 13-22 parts of nitric acid, and 7-19 parts of citric acid 7-21 parts of sodium silicate, 8-17 parts of zinc nitrate, 9-22 parts of copper nitrate, 11-32 parts of hydrogen peroxide, 9-23 parts of sodium fluoride, 9-21 parts of ammonium persulfate, 9 parts of potassium molybdate ~26 parts, 12~31 parts of nano-potassium bromate, 9-17 parts of nano-potassium chlorate, 12-36 parts of ethanol, 23-48 parts of water. (1) The iron and steel surface fluoroferrate conversion plating solution of the present invention can form a complete conversion film, the film color is deeper, the film surface is smooth and uniform, and the color is not yellow; (2) The transformation formed by the plating solution of the present invention It is found that the corrosion resistance time of the film becomes longer through the neutral salt spray test; (3) the plating solution of the present invention will not cause harm to the environment.

Description

Technical field [0001] The invention relates to the field of surface treatment of iron and steel, in particular to a fluoroferrite conversion plating solution on the surface of iron and steel and a preparation method thereof. Background technique [0002] As we all know, the iron and steel industry covers all areas of the national economy, such as railways, machinery, electricity, aviation, chemicals, weapons, light industry, and construction. Steel corrosion has caused serious economic losses and waste of resources. However, the rapid development of industry and the deterioration of the use environment have exacerbated the corrosion of steel. Nowadays, whether in developed or developing countries, the loss of material corrosion to the national economy of each country accounts for about 1.5% to 4.2% of the country's total national economic output value. According to statistics, the world’s annual steel scrap due to corrosion is equivalent to 30% of steel output, of which 2 / 3 ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/44
CPCC23C22/44
Inventor 尤为
Owner WUXI EPIC TECH
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