Aluminum alloy material surface treatment method

A technology for aluminum alloy materials and aluminum alloy surfaces, applied in the field of aluminum alloy materials, can solve the problems of difficult maintenance of galvanizing process operation, shorten the service life of electroless nickel plating solution, etc., so as to reduce the non-uniformity of corrosion and reduce the alkali etching treatment process. , the effect of high production efficiency

Inactive Publication Date: 2017-08-18
HEFEI WANZHIJING DOORS & WINDOWS CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional electroless nickel plating process on the surface of aluminum alloy generally adopts the secondary zinc dipping primer process to ensure the adhesion of the nickel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] A surface treatment method of aluminum alloy material includes the following treatment steps:

[0026] a. Pretreatment of aluminum alloy surface;

[0027] b. Polish the aluminum alloy surface with chemical reagents;

[0028] c. Conduct polar oxidation treatment on the surface of aluminum alloy;

[0029] d. Plating the aluminum alloy surface.

[0030] The pretreatment of step a is: removing oil stains on the surface of the aluminum alloy with an alkaline degreasing solution, the temperature of the alkaline degreasing solution is 50°C, and the decontamination is continued for 5 minutes.

[0031] The alkaline degreasing solution is Na3PO4 solution.

[0032] Step a: After pretreatment, wash with hot water at 60° C. and then wash with cold water until the surface of the aluminum alloy is free of water droplets.

[0033] The polishing treatment of step b is: cleaning the surface of the aluminum alloy at a temperature of 45°C with an alkaline washing solution to remove th...

Example Embodiment

[0037] Example 2

[0038] A surface treatment method of aluminum alloy material includes the following treatment steps:

[0039] a. Pretreatment of aluminum alloy surface;

[0040] b. Polish the aluminum alloy surface with chemical reagents;

[0041] c. Conduct polar oxidation treatment on the surface of aluminum alloy;

[0042] d. Plating the aluminum alloy surface.

[0043] The pretreatment of step a is: removing oil stains on the surface of the aluminum alloy with an alkaline degreasing solution, the temperature of the alkaline degreasing solution is 45°C, and the decontamination is continued for 5 minutes.

[0044] The alkaline degreasing liquid is Na2CO3 solution.

[0045] Step a: After pretreatment, wash with hot water at 40° C. and then wash with cold water until the surface of the aluminum alloy is free of water droplets.

[0046] The polishing treatment of step b is: cleaning the surface of the aluminum alloy at a temperature of 45°C with an alkaline washing solution to remove the ...

Example Embodiment

[0050] Example 3

[0051] A surface treatment method of aluminum alloy material includes the following treatment steps:

[0052] a. Pretreatment of aluminum alloy surface;

[0053] b. Polish the aluminum alloy surface with chemical reagents;

[0054] c. Conduct polar oxidation treatment on the surface of aluminum alloy;

[0055] d. Plating the aluminum alloy surface.

[0056] The pretreatment of step a is: removing oil stains on the surface of the aluminum alloy with an alkaline degreasing solution, the temperature of the alkaline degreasing solution is 50° C., and the decontamination is continued for 10 minutes.

[0057] The alkaline degreasing solution is Na5P3O10 solution.

[0058] Step a: After pretreatment, wash with hot water at 60° C. and then wash with cold water until the surface of the aluminum alloy is free of water droplets.

[0059] The polishing treatment of step b is: cleaning the aluminum alloy surface at a temperature of 50°C with an alkaline washing solution to remove the ...

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PUM

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Abstract

Provided is an aluminum alloy material surface treatment method. The method comprises the following steps of 1 conducting pretreatment on the aluminum alloy surface, 2 conducting aluminum alloy surface polishing treatment through a chemical reagent, 3 conducting polar oxidation treatment on the aluminum alloy surface and 4 conducting plating treatment on the aluminum alloy surface. According to the treatment method, the aluminum alloy material has excellent plating good in acid, alkali and salt resistance, the phenomena that the thickness of a protection layer is nonuniform, and missed spraying occurs on the part complex in structure are avoided, and the anticorrosion performance of aluminum alloy is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and in particular relates to a surface treatment method for aluminum alloy materials. Background technique [0002] Aluminum is a pure white light metal with ductility, and its products are often made into rods, sheets, foils, powders, ribbons and filaments. In humid air, an oxide film can be formed to prevent metal corrosion. Aluminum powder and foil burn violently when heated in the air, emitting a blinding white flame. Soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solution, insoluble in water. The content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the earth's crust. The development of the three important industries of aviation, construction, and automobile requires that the material properties have the unique properties of aluminum...

Claims

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Application Information

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IPC IPC(8): C23G1/22C23F3/02C25D11/08C25D11/16C23C18/32C23C28/00
CPCC23C18/32C23C28/30C23F3/02C23G1/22C25D11/08C25D11/16
Inventor 武娟
Owner HEFEI WANZHIJING DOORS & WINDOWS CO LTD
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