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Color electrophoretic coating process of aluminum alloy sections

An aluminum alloy profile, color electrophoresis technology, applied in electrophoretic coatings, electrolytic coatings, electrophoretic plating, etc., can solve the problems of complex process, large environmental pollution, and the appearance color of the paint film is not stable enough, and achieve the effect of reducing consumption

Active Publication Date: 2014-05-28
ZHEJIANG ZHUOYI ALUMINUM
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Problems solved by technology

[0005] The present invention solves the defects in the existing electrophoretic painting process on the surface of aluminum alloy profiles that the process is complex, the environment is polluted, the appearance color of the paint film is not stable enough, the corrosion resistance is not good, and the hardness is not high enough

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  • Color electrophoretic coating process of aluminum alloy sections

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with drawings and embodiments.

[0034] Such as figure 1 As shown, a color electrophoretic painting process for aluminum alloy profiles, the process mainly includes the steps of blank preparation and binding, degreasing, acid etching, alkali etching, neutralization, oxidation, electrolytic coloring, water washing, electrophoresis, curing, etc. Specific steps are as follows:

[0035] (1) Blank preparation and arrangement

[0036] Put the new aluminum wire or the aluminum wire for secondary use in the alkali tank, after alkali etching, wash it in two stages, after neutralization, wash it in two stages, dry it, and then tie it up;

[0037] (2) Degreasing

[0038] Put the assembled profiles into the degreasing tank with an inclination of more than 25 degrees, keep the profiles in the degreasing tank for 2 to 4 minutes, put out the post-control liquid for 30 seconds, and then perform two-stage water wash...

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Abstract

The invention relates to a color electrophoretic coating process of aluminum alloy sections. The process mainly comprises the steps of blank preparation, arrangement, degreasing, water washing, alkali corrosion, water washing, neutralization, water washing, oxidation, water washing, electrophoresis, draining and solidification. Compared with the traditional process of electrophoretic coating after electrolytic coloring and hole sealing, the color electrophoretic coating process reduces the electrolytic coloring, the hole sealing and twice water washing procedures, so that no heavy metal ions or nickel ions are emitted, the water consumption is largely decreased, and the purposes of energy conservation and environmental protection are preferably realized.

Description

[0001] technical field [0002] The invention relates to a new painting process for profiles, in particular to a color electrophoretic painting process for aluminum alloy profiles. Background technique [0003] The traditional surface treatment process of aluminum profiles is oxidation, coloring and sealing treatment. When the conversion film of this kind of aluminum is used outdoors for a long time, especially in acid rain or marine environment, it is easy to corrode and has poor durability. Therefore, since the 1970s, At present, people try to improve the decorative performance and service life of aluminum profiles for construction by coating. At present, electrophoretic coating, powder coating and fluorocarbon spraying have been successfully used in industrialization. Since the electrophoretic coating is a water-based coating, the aluminum material can be directly electrophoresis after pre-treatment and washing. The electrophoretic coating has high transparency, which not...

Claims

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Application Information

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IPC IPC(8): C25D13/04C09D4/02C09D5/44
Inventor 沈建山
Owner ZHEJIANG ZHUOYI ALUMINUM
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