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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
  • Claims
  • 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 plating layer, but the zinc dipping process is complicated to operate and difficult to maintain, and seriously reduces the service life of the electroless nickel plating solution

Method used

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Examples

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Effect test

Embodiment 1

[0025] A surface treatment method for an aluminum alloy material, comprising the following treatment steps:

[0026] a. Pretreatment of the aluminum alloy surface;

[0027] b. Use chemical reagents to polish the aluminum alloy surface;

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

[0029] d. Coating the aluminum alloy surface.

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

[0031] Alkaline degreasing solution is Na3PO4 solution.

[0032] After the pretreatment in step a, wash with hot water at 60°C, and then rinse with cold water until no water drops hang on the surface of the aluminum alloy.

[0033] The polishing treatment in step b is as follows: use alkali cleaning solution to purify the aluminum alloy surface at a temperature of ...

Embodiment 2

[0038] A surface treatment method for an aluminum alloy material, comprising the following treatment steps:

[0039] a. Pretreatment of the aluminum alloy surface;

[0040] b. Use chemical reagents to polish the aluminum alloy surface;

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

[0042] d. Coating the aluminum alloy surface.

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

[0044] Alkaline degreasing solution is Na2CO3 solution.

[0045] After the pretreatment in step a, first wash with hot water at 40°C, and then rinse with cold water until no water drops hang on the surface of the aluminum alloy.

[0046] The polishing treatment in step b is as follows: use alkali cleaning solution to purify the aluminum alloy surface at a temperatu...

Embodiment 3

[0051] A surface treatment method for an aluminum alloy material, comprising the following treatment steps:

[0052] a. Pretreatment of the aluminum alloy surface;

[0053] b. Use chemical reagents to polish the aluminum alloy surface;

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

[0055] d. Coating the aluminum alloy surface.

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

[0057] Alkaline degreasing solution is Na5P3O10 solution.

[0058] After the pretreatment in step a, wash with hot water at 60°C, and then rinse with cold water until no water drops hang on the surface of the aluminum alloy.

[0059] The polishing treatment in step b is as follows: use alkaline cleaning solution to purify the aluminum alloy surface at a temperatur...

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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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