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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

[0010] 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 micro-arc oxidation film is 1.29 μm. Put the workpiece into a vacuum tank and vacuumize it, keep the workpiece under vacuum conditions for 30 minutes, then inject the sealing agent into the vacuum tank, and completely immerse the workpiece in the sealing agent, after 40 minutes The workpiece is taken out, the sealing agent attached to the surface of the workpiece and its oxide film is removed, and baked at 100° C. for 40 minutes. The thickness of the film layer formed by the sealing agent on the micro-arc oxidation film after sealing was 4 μm, the surface roughness of the micro-arc oxidation film after sealing was 1.22 μm, and the hardness was 610 HV. The micro-arc oxidation film after sealing can pass the dirt resistance test.

Embodiment 2

[0011] 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 micro-arc oxidation film is 1.25 μm. Put the workpiece into a vacuum tank and vacuumize, keep the workpiece under vacuum conditions for 60 minutes, then inject the sealing agent into the vacuum tank, and completely immerse the workpiece in the sealing agent, after 30 minutes The workpiece was taken out, the sealing agent attached to the surface of the workpiece and its micro-arc oxidation film was removed, and baked at 120° C. for 30 minutes. The thickness of the film layer formed by the sealing agent on the micro-arc oxidation film after sealing was 3.6 μm, the surface roughness of the micro-arc oxidation film after sealing was 1.2 μm, and the hardness was 620 HV. The micro-arc oxidation film after sealing can pass the dirt resistance test.

[0012] The method for sealing the micro-arc oxidation film of the i...

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Abstract

The invention provides a method for sealing micro-arc oxidation films. An impregnation sealant of a polyester methacrylic acid monomer 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
CPCC25D11/246C25D11/30C25D11/26
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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