Partial porcelain anodizing method for parts with precise dimensions and surface roughness of ra≤0.8

A technology of surface roughness and anodization, which is applied in the direction of anodic oxidation, surface reaction electrolytic coating, electrolytic coating, etc., can solve problems such as the influence of matching or positioning surface processing accuracy, failure to guarantee product use requirements, film layer pollution, etc., to achieve The effect of improving binding force

Active Publication Date: 2018-05-15
SHAANXI BAOCHENG AVIATION INSTR
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Problems solved by technology

Due to the particularity of the porcelain anodized film (film thickness: 5-7μm, HV hardness: 250-300), the subsequent finishing is not only labor-intensive, but also due to the secondary clamping, the machining accuracy of the mating or positioning surface It will have a certain impact, and even pollute the film layer during the processing, especially for parts with curved surface processing, it is impossible to guarantee the use requirements of the product, so it is necessary to propose improvements

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  • Partial porcelain anodizing method for parts with precise dimensions and surface roughness of ra≤0.8
  • Partial porcelain anodizing method for parts with precise dimensions and surface roughness of ra≤0.8
  • Partial porcelain anodizing method for parts with precise dimensions and surface roughness of ra≤0.8

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Embodiment Construction

[0021] An embodiment of the present invention is described below.

[0022] A partial porcelain anodizing method for parts with precise dimensions and a surface roughness of Ra≤0.8, comprising the following steps:

[0023] 1) Degreasing treatment: use gasoline to degrease the surface of the parts;

[0024] 2) Substrate surface pretreatment: immerse the parts in Arnoldine solution (concentration 1% ~ 3%) (5 ~ 10) min to improve the adhesion between the substrate surface and the protective coating;

[0025] 3) Heating and drying: Put the parts into the oven and heat them to (50-60) °C, keep them warm for 30 minutes and take them out;

[0026] 4) Coating the protective layer: paint the parts that do not need to be protected with a room-temperature-curing peelable paint (4-6) times, and park at room temperature until the parts are dry;

[0027] 5) Sculpt the part to be protected and clean the excess paint layer;

[0028] 6) Use gasoline or alcohol to degrease the parts that need...

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Abstract

Provide a partial porcelain anodization method for parts with precise dimensions and surface roughness of Ra≤0.8. Use room temperature curing strippable paint (SBQ‑1) to coat parts that do not need to be oxidized on the surface, and pass the substrate surface pretreatment method , improve the bonding force between the protective layer and the substrate of the parts that do not need to be oxidized, and solve the technical problems of protective layer peeling off and partial permeation plating, which can not only ensure the matching accuracy and good electrical performance of the parts, but also meet the protection and decoration requirements of the parts. At the same time, labor intensity and production cost are reduced, and it is suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and specifically relates to a local porcelain anodization method for parts with precise dimensions and high luminosity, especially suitable for local porcelain anodes of gyro frame parts with precise dimensions and high luminosity, which are not suitable for secondary machining treatment. Background technique [0002] At present, the porcelain anodization of domestic aluminum and aluminum alloys is an anodized film layer in an oxalate-based solution. The film layer is uniform, smooth, and has a decorative appearance similar to enamel and enamel color. The film layer is due to It has high corrosion resistance, heat resistance, toughness, and electrical insulation, and is widely used in aviation, aerospace, medical, instrumentation, electronic equipment and other fields. It is used for the protection of precision instruments and instrument parts, and can also be used without changing the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/08C25D11/10C25D11/16
CPCC25D11/08C25D11/10C25D11/16
Inventor 张浩史海峰孙勇强付新广张晓梅
Owner SHAANXI BAOCHENG AVIATION INSTR
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