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Method for carrying out immersion plating on marine climate-resisting engineering parts

A marine climate and parts technology, applied in hot dip plating process, metal material coating process, coating and other directions, can solve the problems of difficult surface shape, size control, difficult to handle large area parts, high vapor deposition cost, and achieve material The effect of low cost, improved air scouring and erosion ability, and low cost

Active Publication Date: 2010-06-16
JIANGSU LINLONG NEW MATERIALS
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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, and it is not suitable for parts with arbitrary shapes.
However, the cost of vapor deposition is high, it is difficult to process 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

Method used

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  • Method for carrying out immersion plating on marine climate-resisting engineering parts
  • Method for carrying out immersion plating on marine climate-resisting engineering parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0037] (2) Activation treatment in a mixed solution of ethylene glycol 600ml / L, acid ammonium fluoride 45g / L, nickel chloride 30g / L, boric acid 60g / L, lactic acid 35ml / L, acetic acid 230ml / L, temperature 40°C , time 40min, rinse with deionized water, and dry.

[0038] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace and preheat at 500°C for 20 minutes.

[0039] (4) 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.

Embodiment 2

[0041] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0042] (2) Activation treatment in a mixed solution of ethylene glycol 900ml / L, acidic ammonium fluoride 25g / L, nickel chloride 10g / L, boric acid 20g / L, lactic acid 10ml / L, acetic acid 70ml / L, temperature 50°C , time 35min, rinse with deionized water, and dry.

[0043] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace, and preheat at 600°C for 15 minutes.

[0044] (4) 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.

Embodiment 3

[0046] (1) After the parts are cleaned and degreased, they are treated with pickling and rust removal, and rinsed with deionized water.

[0047](2) Activation treatment in a mixed solution of ethylene glycol 700ml / L, acid ammonium fluoride 35g / L, nickel chloride 20g / L, boric acid 50g / L, lactic acid 20ml / L, acetic acid 180ml / L, temperature 60°C , time 30min. Rinse with deionized water and dry.

[0048] (3) Put the parts treated in (1) to (2) into the atmosphere protection furnace, and preheat at 650°C for 10 minutes.

[0049] (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.

[0050] Wherein, the composition and content of the plating solution in Examples 1-3 are shown in Table 1 below, and it should be noted that in Table 1, only some preferred embodiments of the plating solution of the present invention are provided, although the microalloy of Table 1 ...

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Abstract

The invention relates to a method for carrying out immersion plating on marine climate-resisting engineering parts. The method comprises the following steps: 1, carrying out surface derusting treatment on parts; 2, carrying out surface activation treatment on the parts; 3, putting the parts in an atmosphere protection furnace for preheating; and 4, immersing the preheated parts in plating solution and rotating the parts during immersion, wherein the plating solution mainly comprises Zn, Al, Si, RE and microalloy elements which may be one or more of sorts of Mg, Ti and Ni; and the plating solution comprises the compositions in percentage by mass: 35 to 58 percent of Zn, 0.3 to 4.0 percent of Si, 0.02 to 1.0 percent of RE, 001 to 6.0 percent of microalloy elements, and the balance of Al. The parts treated by the hot dip plating technology can obtain excellent erosion and scour resistance under marine climate conditions.

Description

technical field [0001] The invention relates to a method for immersion-plating 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 there are abu...

Claims

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Application Information

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IPC IPC(8): C23C2/12C23C2/06C23C2/02
Inventor 冯立新张敏燕缪强
Owner JIANGSU LINLONG NEW MATERIALS
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