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Treatment method for improving corrosion resistance of steel

A treatment method and steel technology, applied in the direction of pretreatment surface, metal material coating process, surface coating liquid device, etc., can solve problems such as difficult to meet environmental protection, low toxicity, poor anti-corrosion performance, complicated preparation process, etc. Achieve excellent compactness and ion penetration resistance, excellent anti-corrosion performance

Inactive Publication Date: 2019-09-27
安徽省汉甲机电设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although the anti-corrosion coating of steel has a certain anti-corrosion effect on steel, the anti-corrosion performance is poor, the service life of steel is short, and common anti-corrosion coatings often have toxic side effects, heavy environmental pollution load, complex synthesis and preparation process, difficult to Meet the requirements of environmental protection and low toxicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A processing method for improving the anticorrosion performance of steel materials, the specific processing method is as follows:

[0027] 1) Phosphating treatment of steel surface

[0028] Immerse the steel in an ethanol solution with a concentration of 50% and clean it for 20 minutes, then polish the steel to remove rust, blow off the debris on the surface of the steel with compressed air, then rinse with deionized water, and put the rinsed steel into the phosphating solution Treat in medium temperature for 15 minutes, take it out, rinse with distilled water, and dry it in a 60°C oven for 30 minutes;

[0029] 2) Coating treatment of steel

[0030] Heat the dried steel to 80°C, preheat for 20 minutes, and then coat the modified silica sol on the surface of the steel, then heat-press and dry at 60°C for 20 minutes, the pressure is 3MPa, and then heat-press and dry at 120°C for 80 minutes , the pressure is 6MPa, just take it out and let it cool down to room temperature...

Embodiment 2

[0043] A processing method for improving the anticorrosion performance of steel materials, the specific processing method is as follows:

[0044] 1) Phosphating treatment of steel surface

[0045] Immerse the steel in an ethanol solution with a concentration of 60% for 15 minutes, then polish the steel to remove rust, blow off the debris on the surface of the steel with compressed air, then rinse with deionized water, and put the rinsed steel into the phosphating solution Treat in medium for 17 minutes, rinse with distilled water after taking it out, and put it in a 70°C oven for 25 minutes to dry;

[0046] 2) Coating treatment of steel

[0047] Heat the dried steel to 120°C, preheat for 15 minutes, then coat the modified silica sol on the surface of the steel, then heat press and dry at 70°C for 15 minutes, the pressure is 4MPa, and then dry at 130°C for 65 minutes , the pressure is 8MPa, just take it out and let it cool down to room temperature naturally;

[0048] 3) Heat...

Embodiment 3

[0060] A processing method for improving the anticorrosion performance of steel materials, the specific processing method is as follows:

[0061] 1) Phosphating treatment of steel surface

[0062] Immerse the steel in 80% ethanol solution for cleaning for 10 minutes, then polish the steel to remove rust, blow off the debris on the surface of the steel with compressed air, then rinse with deionized water, put the rinsed steel into the phosphating solution Treat in medium temperature for 20 minutes, take it out, rinse with distilled water, and put it in an oven at 80°C for 20 minutes to dry;

[0063] 2) Coating treatment of steel

[0064] Heat the dried steel to 150°C, preheat it for 10 minutes, then coat the surface of the steel with modified silica sol, then dry it by hot pressing at 80°C for 10 minutes, the pressure is 5 MPa, and then dry it by hot pressing at 150°C for 50 minutes , the pressure is 9MPa, just take it out and let it cool down to room temperature naturally; ...

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PUM

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Abstract

The invention discloses a treatment method for improving corrosion resistance of steel. The treatment method for improving the corrosion resistance of steel particularly comprises the following steps: 1) performing phosphating treatment on the surface of the steel; 2) performing film-plating treatment on the steel; 3) performing heat treatment on the steel; and 4) performing nitriding treatment on the steel. The surface of the steel is treated and one high-hardness and high-toughness dense film layer is formed on the surface of the steel, so that the corrosive grafting of the surface of the steel and the air is completed isolated, the surface of the steel has excellent compactness and ion permeability resistance, and the steel has excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of steel anticorrosion, and in particular relates to a treatment method for improving the anticorrosion performance of steel. Background technique [0002] The damage of metal by the surrounding environment medium is called metal corrosion. Metal corrosion is the most common form of corrosion. During corrosion, a chemical or electrochemical multiphase reaction occurs on the metal interface, causing the metal to enter an oxidized (ion) state, which will significantly reduce the strength, plasticity, and toughness of the metal material. and other mechanical properties, damage the geometric shape of metal components, increase the wear between parts, deteriorate electrical and optical physical properties, shorten the service life of equipment, and even cause catastrophic accidents such as fire and explosion. Metal corrosion not only easily leads to a large loss of metal materials and great economic losses, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/24C23C22/44C23C8/38B05D3/10B05D3/02
CPCB05D3/0209B05D3/0254B05D3/0272B05D3/029B05D3/102B05D7/14B05D7/24B05D2202/10B05D2518/10C23C8/38C23C22/44
Inventor 张海涛
Owner 安徽省汉甲机电设备科技有限公司