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Method for carrying out surface activation treatment on marine climate-resisting engineering parts

A surface activation treatment and marine climate technology, applied in gaseous chemical plating, hot-dip plating process, liquid chemical plating, etc., can solve the problems of large impact, affecting the corrosion resistance of the final coating, and poor bonding of the coating, achieving Good wear resistance, good metallurgical bonding effect, and little environmental pollution

Active Publication Date: 2013-01-09
JIANGSU LINLONG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pretreatment of these processes disclosed in the prior art usually includes activation treatment of the parts. However, because the activation solution used in the activation treatment in the prior art has a certain corrosion effect on the parts, it will lead to disadvantages such as poor adhesion of the coating. , thereby affecting the corrosion resistance of the final coating, and because the prior art mostly uses fluoroboric acid or hydrofluoric acid activation solution to activate the parts, the impact on the environment is very large

Method used

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  • Method for carrying out surface activation treatment on marine climate-resisting engineering parts
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  • Method for carrying out surface activation treatment on marine climate-resisting engineering parts

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Adopt the method of the present invention to prepare the operation process of anti-corrosion marine climate coating on the part surface of cast steel structure as follows:

[0048] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0049] (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.

[0050] (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. Rinse with deionized water and dry.

[0051] (4) Hot-dip coating.

Embodiment 2

[0053]Adopt the method of the present invention to prepare the operation process of marine weather-resistant anticorrosion coating on the alloy steel structure part surface as follows:

[0054] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0055] (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.

[0056] (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. Rinse with deionized water and dry.

[0057] (4) thermal spray coating.

Embodiment 3

[0059] Adopt the method of the present invention to prepare the operation process of anti-corrosion anti-corrosion coating of marine weather on the surface of steel structure parts as follows:

[0060] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0061] (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.

[0062] (3) Thermal spraying, temperature 60°C, time 30min. Rinse with deionized water and dry.

[0063] (4) Electroplating coating.

[0064] Wherein, the composition and content of the activating solution of surface activation treatment in embodiment 1-3 are as shown in Table 1 below, and it should be noted that some preferred implementations of the composition and content of the activating solution of the pre...

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Abstract

The invention relates to a method for carrying out surface activation treatment on marine climate-resisting engineering parts. The method comprises the following steps: 1, carrying out derusting treatment on parts; 2, carrying out etching treatment on the parts; 3, carrying out surface activation treatment on the parts at the temperature of between 40 and 60 DEG C for 30 to 40min by adopting the mixed solution of glycol, acidic ammonium fluoride, nickelous chloride, boric acid, lactic acid and acetic acid as the activation solution of surface activation treatment; and 4, drying and carrying out post treatment. The method not only reduces part erosion, but also improves activation effects; moreover, the method ensures ideal metallurgical effect of bonding with substrates to obtain better erosion and abrasion resistance of coatings; and in addition, due to replacing fluoboric acid or hydrofluoric acid used in the prior art, the method generates relatively less impact on the environment and completely solves the problems of the prior art.

Description

technical field [0001] The invention relates to a method for surface activation 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 electricity, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/02C25D5/34C23C18/18C23C4/02C23C2/02C23C14/02C23C16/02
Inventor 冯立新张敏燕缪强
Owner JIANGSU LINLONG NEW MATERIALS CO LTD
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