Aluminum alloy anodic oxidation surface treatment process

A technology of anodic oxidation and surface treatment, applied in the direction of anodic oxidation, surface reaction electrolytic coating, coating, etc., can solve the problem of single function of oxide film, and achieve the effect of good transparency, good adsorption and easy coloring

Inactive Publication Date: 2021-08-03
HEYUAN LANHAI MICK MOULD & CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To this end, the present invention provides an aluminum alloy anodic oxidation surface treatment process, by using sulfuric acid electrolyte, chromic acid electrolyte and phosphoric acid electrolyte to anodize the aluminum alloy sequentially to solve most of the existing aluminum alloy anodic oxidation surface treatment process. The problem that the oxide film produced by the treatment process is relatively simple in functionality

Method used

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  • Aluminum alloy anodic oxidation surface treatment process
  • Aluminum alloy anodic oxidation surface treatment process
  • Aluminum alloy anodic oxidation surface treatment process

Examples

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Effect test

Embodiment 1

[0037] Refer to attached Figure 1-Figure 8 , a kind of aluminum alloy anodic oxidation surface treatment process provided by the present invention, comprises concrete steps as follows:

[0038] S1, to clean the aluminum alloy, by using carbon tetrachloride, trichlorethylene, gasoline or toluene as the cleaning agent, immerse the aluminum alloy die-casting parts, scrub with a brush, then air-dry, and then immerse in water, so that the oil is removed After exhaustion, rinse with hot water at 80°C immediately. If a black film is formed on the surface, soak it in 30% nitric acid solution for 18 seconds to remove the black film. Finally, rinse with cold water and immerse in distilled water;

[0039] S2, carry out alkali etching on aluminum alloy, carry out alkali etching on aluminum alloy by using aluminum material alkali etchant, aluminum material alkali etchant is composed of sodium hydroxide, ammonium bifluoride, gluconate and dextrin, wherein sodium hydroxide, The ratio of am...

Embodiment 2

[0051] Refer to attached Figure 1-Figure 8 , a kind of aluminum alloy anodic oxidation surface treatment process provided by the present invention, comprises concrete steps as follows:

[0052] S1, to clean the aluminum alloy, by using carbon tetrachloride, trichlorethylene, gasoline or toluene as the cleaning agent, immerse the aluminum alloy die-casting parts, scrub with a brush, then air-dry, and then immerse in water, so that the oil is removed After exhaustion, rinse with hot water at 85°C immediately. If a black film is formed on the surface, soak it in 32% nitric acid solution for 20 seconds to remove the black film. Finally, rinse with cold water and immerse in distilled water;

[0053] S2, carry out alkali etching on aluminum alloy, carry out alkali etching on aluminum alloy by using aluminum material alkali etchant, aluminum material alkali etchant is composed of sodium hydroxide, ammonium bifluoride, gluconate and dextrin, wherein sodium hydroxide, The ratio of am...

Embodiment 3

[0057] Refer to attached Figure 1-Figure 8 , a kind of aluminum alloy anodic oxidation surface treatment process provided by the present invention, comprises concrete steps as follows:

[0058] S1, to clean the aluminum alloy, by using carbon tetrachloride, trichlorethylene, gasoline or toluene as the cleaning agent, immerse the aluminum alloy die-casting parts, scrub with a brush, then air-dry, and then immerse in water, so that the oil is removed After exhaustion, rinse with hot water at 90°C immediately. If a black film is formed on the surface, soak it in 34% nitric acid solution for 22 seconds to remove the black film. Finally, rinse with cold water and immerse in distilled water;

[0059] S2, carry out alkali etching on aluminum alloy, carry out alkali etching on aluminum alloy by using aluminum material alkali etchant, aluminum material alkali etchant is composed of sodium hydroxide, ammonium bifluoride, gluconate and dextrin, wherein sodium hydroxide, The ratio of am...

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Abstract

The invention discloses an aluminum alloy anodic oxidation surface treatment process and particularly relates to the technical field of anodic oxidation. According to the technical scheme, the aluminum alloy anodic oxidation surface treatment process comprises the following specific steps of S1, cleaning an aluminum alloy, soaking an aluminum alloy die casting by adopting carbon tetrachloride, trichloro ethylene, gasoline or methylbenzene as a cleaning agent, brushing with a brush, then air-drying, then soaking in water, repeating the steps, immediately washing with hot water at 80-90 DEG C after completely removing oil, if a layer of black film is generated on the surface, soaking in a 30-34% nitric acid solution for 18 S-22 S so as to remove the black film, finally washing with cold water, and soaking in distilled water. The aluminum alloy anodic oxidation surface treatment process has the beneficial effects that the sulfuric acid electrolyte, the chromic acid electrolyte and the phosphoric acid electrolyte are used for conducting anodic oxidation on the aluminum alloy in sequence, so that the oxidation film has multiple functions, the application range of the aluminum alloy can be widened, and the sales volume of the aluminum alloy can also be increased.

Description

technical field [0001] The invention relates to the field of anodic oxidation, in particular to an aluminum alloy anodic oxidation surface treatment process. Background technique [0002] Aluminum alloy is an alloy based on aluminum with a certain amount of other alloying elements added. It is one of the light metal materials. In addition to the general characteristics of aluminum, aluminum alloys also have specific properties of some alloys due to the different types and quantities of alloying elements added. Characteristics, the density of aluminum alloy is 2.63-2.85g / cm, it has high strength (σb is 110-650MPa), the specific strength is close to high-alloy steel, the specific stiffness exceeds steel, it has good casting performance and plastic processing performance, good Excellent electrical and thermal conductivity, good corrosion resistance and weldability, can be used as structural materials, and has a wide range of applications in aerospace, aviation, transportation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/16C25D11/12C25D11/08C25D21/10
CPCC25D11/16C25D11/12C25D11/08C25D21/10
Inventor 凌喜福林鹏杨勇杨志强汪长刚
Owner HEYUAN LANHAI MICK MOULD & CUTTING TOOLS CO LTD
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