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Chromate-free passivation treatment process for aluminum profile material

A chrome-free passivation and treatment process technology, applied in the coating process of metal materials, etc., can solve problems such as turning gray, forming corrosion products on the surface, and affecting appearance

Inactive Publication Date: 2015-12-16
ANHUI JINGCHANG ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment layer is prone to corrosion in a humid environment, causing the surface to form corrosion products or turn gray and dark, which will affect the appearance and must be passivated. Currently, the most widely used is chromate passivation treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0016] Specific embodiment 1: aluminum profile chrome-free passivation treatment process, specifically comprises the following steps:

[0017] 1) Ash removal, slag removal and rinsing, soak the aluminum profile in clean water for 1-2 minutes;

[0018] 2) Degreasing and degreasing, soak the cleaned aluminum profile in water with built-in degreasing agent, including 360 parts of vegetable oil, 40 parts of potassium permanganate, 90 parts of methanol, 90 parts of ethylene glycol, 40 parts of pentaerythritol, sodium hydroxide 100 parts, 50 parts of sodium chloride, 40 parts of sodium carboxymethylcellulose, soak for 4-6 minutes, and the ratio of degreasing agent to water is 1:300;

[0019] 3) Activate degreasing, mix and stir 80 parts of sodium hydroxide, 30 parts of zinc sulfate, 30 parts of nickel sulfate, and 80 parts of potassium sodium tartrate, add 4000 parts of water, 20 parts of sulfuric acid, and 50 parts of glycerin, stir, and remove Put the profile after oil degreasing...

specific Embodiment 2

[0025] Specific embodiment 2: aluminum profile chrome-free passivation treatment process, specifically comprises the following steps:

[0026] 1) Ash removal, slag removal and rinsing, soak the aluminum profile in clean water for 1-2 minutes;

[0027] 2) Degreasing and degreasing, soak the cleaned aluminum profile in water with built-in degreasing agent, including 440 parts of vegetable oil, 60 parts of potassium permanganate, 110 parts of methanol, 110 parts of ethylene glycol, 60 parts of pentaerythritol, sodium hydroxide 130 parts, 70 parts of sodium chloride, 50 parts of sodium carboxymethylcellulose, soak for 4-6 minutes, and the ratio of degreasing agent to water is 1:300;

[0028] 3) Activate degreasing, mix and stir 120 parts of sodium hydroxide, 40 parts of zinc sulfate, 40 parts of nickel sulfate, and 85 parts of potassium sodium tartrate, and simultaneously add 4000 parts of water, 30 parts of sulfuric acid, and 60 parts of glycerin, stir, Put the profile after oil...

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PUM

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Abstract

Disclosed is a chromate-free passivation treatment process for aluminum profile material. The chromate-free passivation treatment process specifically comprises the steps of ash removal, deslagging rinsing, oil removal degreasing, activation degreasing, rinsing, hot dip galvanizing, rinsing, chromate-free passivation and rinsing. The process is simple and orderly. Degreasing and galvanizing are added based on a traditional process, so that the life of the profile material is prolonged, and the surface strength of the profile material is increased; the profile material is oxidation-resistant for a long time; meanwhile, a layer of thin film is formed on the surface of the profile material, and the thin film protects the surface of the profile material effectively, so that the profile material is oxidation-resistant and corrosion-resistant. The process makes the chromate-free passivation treatment on the profile material more perfect.

Description

Technical field: [0001] The invention relates to a profile manufacturing process, in particular to a chromium-free passivation treatment process for aluminum profiles. Background technique: [0002] Metal surface treatment is an effective method to improve the resistance of steel to atmospheric corrosion. However, the treatment layer is prone to corrosion in a humid environment, causing the surface to form corrosion products or turn gray and dark, which affects the appearance, and passivation must be carried out. Currently, the most widely used is chromate passivation treatment. Invention content: [0003] The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a chromium-free passivation treatment process for aluminum profiles. [0004] The technical problem to be solved by the present invention is realized by the following technical solutions. [0005] The chromium-free passivation treatment process for aluminum profi...

Claims

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Application Information

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IPC IPC(8): C23C22/36C23C22/78
Inventor 易延斌张中礼张俊斌王伟
Owner ANHUI JINGCHANG ALUMINUM
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