Steel surface antirust agent combination product and application thereof

A combination product and rust inhibitor technology, applied in the direction of metal material coating process, etc., can solve problems such as surprising cost, and achieve the effect of high surface uniformity, low surface roughness, and enhanced anti-rust performance.

Inactive Publication Date: 2017-09-15
唐山智新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the cost of using stainless steel to prevent corrosion is staggering

Method used

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  • Steel surface antirust agent combination product and application thereof
  • Steel surface antirust agent combination product and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Apply a mixture of 2% potassium hydroxide, 13-16% ammonium sulfide, and 1% triethanolamine to the outer surface of the steel, then put the steel under sunlight for 1 hour, take it back, and place it in a cool place; Then use a mixed solution of 10% nitric acid and 0.1% thiourea at a temperature of 40°C to wash the steel; after washing, put it in an oven at 40°C for drying; then immerse the above steel at 250°C with a concentration of 100-150g / L ammonium chloride solution for 2 minutes, then put the steel into 150g / L zinc chloride solution at 450°C for 20 minutes, and finally place it in a passivation solution at a temperature of 30°C. passivation. The passivation solution is a mixed solution of ammonium dichromate with a concentration of 80g / L and chromic acid with a concentration of 3g / L.

Embodiment 2

[0023] Apply a mixture of 5% potassium hydroxide, 16% ammonium sulfide, and 2% triethanolamine to the outer surface of the steel, then place the steel in the sun for 2 hours, take it back, and place it in a cool place; The mixed solution of 12% nitric acid and 0.2% thiourea, the temperature is 60°C, and the steel is washed; after washing, it is placed in an oven at 60°C for drying; then the above steel is immersed at 300°C with a concentration of 150g / Into L ammonium chloride solution for 4 minutes, then put the steel into zinc chloride solution with a concentration of 180g / L at 470°C for 30 minutes, and finally put it into a passivation solution at a temperature of 32°C for passivation. The passivation solution is a mixed solution of ammonium dichromate with a concentration of 100g / L and chromic acid with a concentration of 4g / L.

Embodiment 3

[0025] Apply a mixture of 2% potassium hydroxide, 13% ammonium sulfide, and 1% triethanolamine to the outer surface of the steel, then place the steel in the sun for 2 hours, take it back, and place it in a cool place; The mixed solution of 10% nitric acid and 0.1% thiourea, the temperature is 60 ℃, and the steel is washed; after washing, it is placed in an oven at 60 ℃ for drying; then the above steel is immersed at 300 ℃ with a concentration of 100g / Into L ammonium chloride solution for 4 minutes, then put the steel into the zinc chloride solution with a concentration of 150g / L at 470°C for 30 minutes, and finally put it into the passivation solution with a temperature of 32°C for passivation. The passivation solution is a mixed solution of ammonium dichromate with a concentration of 80g / L and chromic acid with a concentration of 3g / L.

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Abstract

The invention discloses a steel surface antirust agent combination product and application thereof. The steel surface antirust agent combination product comprises a coating agent, a detergent, a soaking agent and a passivator which are used independently, wherein the coating agent is a mixed solution of potassium hydroxide, ammonium sulfide and triethanolamine; the detergent is a mixed solution of nitric acid and thiourea; the soaking agent comprises an ammonium chloride solution and a zinc chloride solution; and the passivator is a mixed solution of ammonium dichromate and chromic acid. After the surface of steel is treated by the steel surface antirust agent combination product, the steel can be high in surface uniformity and low in surface roughness. More importantly, the antirust property of the surface of the steel is greatly improved, and good appearance of the outer surface of the steel can be maintained for a long time.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals production, and relates to an antirust agent, in particular to a combination product of an antirust agent on steel surfaces and an application thereof. Background technique [0002] Steel is an important material that is indispensable for national construction and the realization of the four modernizations. It is widely used and has a variety of varieties. According to the different cross-sectional shapes, steel is generally divided into four categories: profiles, plates, pipes and metal products. In order to facilitate the organization of steel production , Order supply and do a good job in operation and management, it is divided into heavy rail, light rail, large section steel, medium section steel, small section steel, steel cold-formed section steel, high-quality section steel, wire rod, medium and thick steel plate, thin steel plate, electrical silicon steel sheet, strip Steel, seamles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/24C23C22/73C23G1/08
CPCC23C22/24C23C22/73C23G1/085
Inventor 张斌
Owner 唐山智新科技有限公司
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