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A kind of sealing method of substrate surface pore after oxidation

A substrate surface, pore technology, applied in anodizing, surface reaction electrolytic coating, coating and other directions, can solve the problems of high current density, accelerated corrosion of substrate metal, etc., to achieve good non-stick performance, excellent wear resistance and The effect of corrosion resistance

Active Publication Date: 2022-03-22
PINGDINGSHAN MEIYI METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small area of ​​the matrix at the pores and the high current density, the phenomenon of "big cathode and small anode" is formed. At this time, the oxide layer will not only fail to protect the matrix metal as it should, but will accelerate the corrosion of the matrix metal.

Method used

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  • A kind of sealing method of substrate surface pore after oxidation
  • A kind of sealing method of substrate surface pore after oxidation

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A method for sealing pores on the surface of a substrate after oxidation, the specific steps are as follows:

[0053] (1) Use boiling water to seal the hole for the first time;

[0054] (2) Seal the holes for the second time after diluting with a sealing agent;

[0055](3) Passivation treatment is then performed, and the hole is sealed for the third time after being diluted with a sealing agent;

[0056] (4) Finally, use water vapor to seal the hole for the fourth time;

[0057] Among them, the sealing agent is diluted with a diluent to a mass concentration of 5%, and the sealing system formed by the sealing agent and the diluent is:

[0058] a. Water-based dispersant of polytetrafluoroethylene.

[0059] The specific method for the second sealing in step (2) or the third sealing in step (3) is: spray the sealing system onto the oxide film on the surface of the oxidized substrate, and then perform high-temperature sintering to make the sealing The material in the age...

Embodiment 2

[0069] A method for sealing pores on the surface of a substrate after oxidation, the specific steps are as follows:

[0070] (1) Use boiling water to seal the hole for the first time;

[0071] (2) Seal the holes for the second time after diluting with a sealing agent;

[0072] (3) Passivation treatment is then performed, and the hole is sealed for the third time after being diluted with a sealing agent;

[0073] (4) Finally, use water vapor to seal the hole for the fourth time;

[0074] Among them, the sealing agent is diluted with a diluent to a mass concentration of 80%, and the sealing system formed by the sealing agent and the diluent is:

[0075] b. Oily system of dimethylsiloxane.

[0076] The specific method for the second sealing in step (2) or the third sealing in step (3) is: spray the sealing system onto the oxide film on the surface of the oxidized substrate, and then perform high-temperature sintering to make the sealing The material in the agent is completely...

Embodiment 3

[0087] A method for sealing pores on the surface of a substrate after oxidation, the specific steps are as follows:

[0088] (1) Use boiling water to seal the hole for the first time;

[0089] (2) Seal the holes for the second time after diluting with a sealing agent;

[0090] (3) Passivation treatment is then performed, and the hole is sealed for the third time after being diluted with a sealing agent;

[0091] (4) Finally, use water vapor to seal the hole for the fourth time;

[0092] Among them, the sealing agent is diluted with a diluent to a mass concentration of 5%, and the sealing system formed by the sealing agent and the diluent is:

[0093] c. Silica film, with water as dispersion.

[0094] The specific method for the second sealing in step (2) or the third sealing in step (3) is: spray the sealing system onto the oxide film on the surface of the oxidized substrate, and then perform high-temperature sintering to make the sealing The material in the agent is compl...

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Abstract

The invention provides a method for sealing pores on the surface of a base material after oxidation. Firstly, boiling water is used to seal the pores for the first time, and then the sealing agent is used to dilute the pores for the second time, and then passivation treatment is performed and the sealing agent is used to dilute the pores for the second time. Seal the holes three times, and finally use water vapor to seal the holes for the fourth time. Among them, the first sealing achieves the basic filling of the larger pores on the surface of the substrate after oxidation, the second sealing realizes the filling of the remaining space of the larger pores and some smaller pores, and the passivation treatment combined with the second The three times of sealing realize the full filling of larger pores and the filling of some smaller pores, and the final fourth sealing realizes the final filling of all pores, which realizes the sealing of the pores on the surface of the substrate after oxidation, making the substrate more durable It is durable, has excellent wear resistance and corrosion resistance, and the pots and utensils made of it have good non-stick performance.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for sealing pores on the surface of a substrate after oxidation. Background technique [0002] Metal workpieces are easy to rust. In order to prevent rust, metal workpieces are generally oxidized at present. At present, the surface of metal workpieces that have been oxidized, especially high-precision oxidation, seems very smooth and flat, but when the workpiece is placed under a microscope However, it can still be seen that there are some loose holes on the surface of these workpieces during microscopic observation. Due to the existence of these holes, the use of the workpieces has certain limitations. It is difficult for cast iron pots as cookware to have good non-stick and Anti-rust and wear-resistant performance, but also have a certain impact on the service life. [0003] The main cause of corrosion is the existence of the pores, the corrosive mediu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/18C25D11/24C25D11/34
CPCC25D11/18C25D11/246C25D11/24C25D11/34
Inventor 郭向阳
Owner PINGDINGSHAN MEIYI METAL PROD
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