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A method for anti-corrosion treatment of marine climate-resistant engineering parts

A marine climate and anti-corrosion treatment technology, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of surface shape, difficult size control, difficult to handle large-area parts, high cost of vapor deposition, etc., to achieve The effect of low material cost, reduced mechanical property mismatch, and eliminated risk of corrosion

Active Publication Date: 2012-02-15
JIANGSU LINLONG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the plating layer of electroplating and electroless plating is too thin, generally only a few microns, and the hardness of the coating itself is too low to resist the erosion of particle-containing airflow
Although thermal spraying has the advantages of large coating thickness and easy operation, it is difficult to control the surface shape and size of the protected parts, which is basically not suitable for the research target parts of this project.
However, the cost of vapor deposition is high, it is difficult to deal with large-area parts, and the thickness of the coating itself is thin, there are pinholes and Cl in salt spray - Rapid corrosion occurs under the attack of
In addition, the common problems of the above-mentioned means are that the above-mentioned technical means are complex in process and high in production cost, and more seriously, the coating layer obtained by using the above-mentioned technical means is easy to peel off under the synergistic effect of environment and stress. Lose the protective effect, therefore, research and development of effective new anti-corrosion technology has become an urgent need for the current industrial development

Method used

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  • A method for anti-corrosion treatment of marine climate-resistant engineering parts
  • A method for anti-corrosion treatment of marine climate-resistant engineering parts
  • A method for anti-corrosion treatment of marine climate-resistant engineering parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050](1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0051] (2) Etch the degreasing and rust-removing parts in a mixed solution of hydrochloric acid HCl 94% (volume fraction) + hydrofluoric acid HF 6% (volume fraction), at room temperature for 1 minute, and rinse with deionized water.

[0052] (3) Activation treatment in a mixed solution of ethylene glycol, acidic ammonium fluoride, nickel chloride, boric acid, lactic acid, and acetic acid at a temperature of 40°C for 40 minutes, rinsed with deionized water, and dried.

[0053] (4) Put the parts treated in (1) to (3) into the atmosphere protection furnace, and preheat at 500°C for 20 minutes.

[0054] (5) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 1 minute, and rotate the parts during the immersion process.

[0055] (6) Put the immersion-plated parts into a vacuum furnace, keep w...

Embodiment 2

[0058] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0059] (2) The parts after degreasing and derusting are etched in a mixed solution of hydrochloric acid HCl 95% (volume fraction) + hydrofluoric acid HF 5% (volume fraction) at room temperature for 2 minutes, and rinsed with deionized water.

[0060] (3) Activation treatment in a mixed solution of ethylene glycol, acidic ammonium fluoride, nickel chloride, boric acid, lactic acid, and acetic acid at a temperature of 50°C for 35 minutes, rinsed with deionized water, and dried.

[0061] (4) Put the parts treated in (1) to (3) into the atmosphere protection furnace, and preheat at 600°C for 15 minutes.

[0062] (5) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 3 minutes, and rotate the parts during the immersion process.

[0063] (6) Put the immersion-plated parts into a vacuum furn...

Embodiment 3

[0066] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0067] (2) The parts after degreasing and derusting are etched in a mixed solution of hydrochloric acid HCl 96% (volume fraction) + hydrofluoric acid HF4% (volume fraction) at room temperature for 3 minutes, and rinsed with deionized water.

[0068] (3) Activation treatment in a mixed solution of ethylene glycol, acidic ammonium fluoride, nickel chloride, boric acid, lactic acid, and acetic acid at a temperature of 60°C for 30 minutes, rinsed with deionized water, and dried.

[0069] (4) Put the parts treated in (1) to (3) into the atmosphere protection furnace, and preheat at 650°C for 10 minutes.

[0070] (5) In the atmosphere protection melting furnace, immerse the preheated steel parts in the plating solution for 5 minutes, and rotate the parts during the immersion process.

[0071] (6) Put the immersion-plated parts into a vacuum furna...

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Abstract

The invention relates to a method for anticorrosion treatment of marine climate-resistant engineering parts, comprising: first step: rust removal treatment on the parts; second step: etching treatment on the parts; third step: surface activation treatment on the parts ; The fourth step: preheat the parts in the atmosphere protection furnace; the fifth step: immerse the preheated parts in the plating solution, and rotate the parts during the immersion process; the sixth step: diffusion treatment; Step: use coating to carry out sealing treatment, and the parts treated by the method of the present invention can be endowed with sufficient corrosion resistance and erosion resistance under marine climate conditions.

Description

technical field [0001] The invention relates to a method for carrying out anti-corrosion treatment of marine climate-resistant engineering parts. Background technique [0002] With the rapid development of science and technology, more and more engineering equipment is used in offshore and marine environments. According to the ISO 9225 environmental evaluation standard, its service conditions are generally >C5, which belongs to extremely harsh environments. The ambient atmosphere is rainy, high temperature, salty spray and strong wind flow. The exposed parts will be subjected to the combined effects of strong atmospheric corrosion, electrochemical corrosion and airflow erosion. The service life of various steel structures is much lower than that of ordinary inland outdoor environment. For example, wind power generation equipment, one of the typical engineering equipment serving in marine climate conditions, because wind power generators use wind energy to generate electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/04C23C2/02C23C2/26
Inventor 冯立新张敏燕缪强
Owner JIANGSU LINLONG NEW MATERIALS CO LTD
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