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Method for sealing micro-arc oxidation films

A micro-arc oxidation and sealing technology, applied in anodizing, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of destroying the ceramic texture of micro-arc oxidation film, difficult to achieve the sealing effect of micro-arc oxidation film, etc. Good sealing effect

Inactive Publication Date: 2010-02-17
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different properties of the anodized film and the micro-arc oxidation film, the pore diameter is different (the pore diameter of the anodized film is nanometer, and the pore diameter of the micro-arc oxidation film is micron), it is difficult to imitate the sealing method of the anodized film. The arc oxidation film has a good sealing effect, and even destroys the unique ceramic texture of the micro-arc oxidation film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: An aluminum alloy workpiece is selected, and a micro-arc oxidation film is formed on the surface of the workpiece, and the surface roughness of the oxide film is 1.35 μm. Mix high hydrogen-containing silicone oil and xylene at a mass ratio of 1:1 and use it as a sealing agent. Use the sealing agent to evenly smear the oxide film, and after the application, let the workpiece stand at room temperature (about 20° C.) for 5 to 10 minutes. Use a dry dust-free cloth to remove excess sealing agent on the surface of the oxide film, and then bake the oxide film at 100° C. for 60 minutes. After sealing, the thickness of the film layer formed by the sealing agent on the oxide film is about 1.2 μm, the surface roughness of the oxide film after sealing is 1.35 μm, and the hardness is 1100 HV. The oxide film after sealing can pass the dirt resistance test.

Embodiment 2

[0010] Embodiment 2: An aluminum alloy workpiece is selected, and a micro-arc oxidation film is formed on the surface of the workpiece, and the surface roughness of the oxide film is 1.35 μm. Mix high hydrogen-containing silicone oil and xylene at a mass ratio of 2:1 and use it as a sealing agent. Use the sealing agent to evenly smear the oxide film, and after the application, let the workpiece stand at room temperature (about 20° C.) for 5 to 10 minutes. Use a dry dust-free cloth to remove excess sealing agent on the oxide film on the surface of the workpiece, and then bake the oxide film at 100°C for 60 minutes. After sealing, the thickness of the film layer formed by the sealing agent on the oxide film is about 1.5 μm, the surface roughness of the oxide film after sealing is 1.35 μm, and the hardness is 1050 HV. The oxide film after sealing can pass the dirt resistance test.

[0011] The method for sealing the micro-arc oxidation film of the invention is suitable for the ...

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Abstract

The invention provides a method for sealing micro-arc oxidation films. A mixture containing an organic silicon resin and a diluent is used as a sealing agent to seal the micro-arc oxidation films.

Description

technical field [0001] The invention relates to a method for sealing holes in a micro-arc oxidation film. Background technique [0002] Micro-arc oxidation technology (also known as plasma oxidation, anodic spark deposition, spark discharge anodic deposition and surface ceramization, etc.) is a technology that can directly grow an oxide film with ceramic texture in situ on the metal surface. The ceramic oxide film formed by this technology has good appearance and high hardness, so it is widely used in the field of surface decoration of products. In the process of using this technology to form ceramic oxide film on the surface of metal workpiece, due to high temperature sintering, the workpiece emits a large amount of gas. When the gas is discharged, it passes through the oxide film formed on the surface of the workpiece, so that the oxide film forms many micropores. The existence of the many micropores makes it very easy for dirt to penetrate into the oxide film and is not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/18
CPCC25D11/246C25D11/026C25D11/30C25D11/26
Inventor 戴丰源姜传华罗勇达何纪壮刘伟敖旭峰
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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