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Blue colorant and coloring method for aluminum material

A technology of blue colorant and aluminum material, applied in the direction of electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve the problems of affecting the surface color of aluminum products, surface color fading, etc.

Inactive Publication Date: 2013-12-25
WUJIANG LONGXU METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are multiple and various coloring processes at present, but the surface color of the colored aluminum will change under special environmental conditions. For example, under long-term sunlight or humid conditions, the surface color will become lighter, which affects the surface color of aluminum products.

Method used

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  • Blue colorant and coloring method for aluminum material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of aluminum material blue coloring agent, comprises by weight component:

[0020] Liquid A: 30 parts of ammonium molybdate, 800 parts of water;

[0021] Liquid B: 30 parts of sulfuric acid, 8 parts of phosphoric acid, 10 parts of stannous sulfate, 10 parts of cresolsulfonic acid, 5 parts of sulfanilic acid, 2 parts of citric acid, and 800 parts of water.

[0022] The coloring method of the above-mentioned aluminum material blue colorant is carried out according to the following steps:

[0023] (1) Degreasing and cleaning: use metal degreaser to remove oil stains on the metal surface, and clean with 70°C pure water;

[0024] (2) Polishing: Physical or chemical polishing of the metal surface;

[0025] (3) Degreasing and cleaning: repeat step (1) for processing;

[0026] (4) Coloring: In 18% sulfuric acid electrolyte, at 20°C, the current density is 1-3 amps / dm 2 Under certain conditions, use direct current electrolysis for 20 minutes to form anodic oxide film, ...

Embodiment 2

[0029] A kind of aluminum material blue coloring agent, comprises by weight component:

[0030] Liquid A: 35 parts of ammonium molybdate, 850 parts of water;

[0031] Liquid B: 32 parts of sulfuric acid, 10 parts of phosphoric acid, 12 parts of stannous sulfate, 11 parts of cresolsulfonic acid, 6 parts of sulfanilic acid, 3 parts of citric acid, and 900 parts of water.

[0032] The coloring method of the above-mentioned aluminum material blue colorant is carried out according to the following steps:

[0033] (1) Degreasing and cleaning: Use a metal degreaser to remove oil stains on the metal surface, and clean with 75°C pure water;

[0034] (2) Polishing: Physical or chemical polishing of the metal surface;

[0035] (3) Degreasing and cleaning: repeat step (1) for processing;

[0036] (4) Coloring: In 19% sulfuric acid electrolyte, at 22°C, the current density is 1-3 amps / dm 2 Under the condition, use direct current electrolysis for 22 minutes to form anodic oxide film, th...

Embodiment 3

[0039] A kind of aluminum material blue coloring agent, comprises by weight component:

[0040] Liquid A: 36 parts of ammonium molybdate, 900 parts of water;

[0041] Liquid B: 35 parts of sulfuric acid, 12 parts of phosphoric acid, 13 parts of stannous sulfate, 12 parts of cresolsulfonic acid, 8 parts of sulfanilic acid, 4 parts of citric acid, and 950 parts of water.

[0042] The coloring method of the above-mentioned aluminum material blue colorant is carried out according to the following steps:

[0043] (1) Degreasing and cleaning: Use metal degreaser to remove oil stains on the metal surface, and clean with 80°C pure water;

[0044] (2) Polishing: Physical or chemical polishing of the metal surface;

[0045] (3) Degreasing and cleaning: repeat step (1) for processing;

[0046] (4) Coloring: In 20% sulfuric acid electrolyte, at 25°C, the current density is 1-3 amps / dm 2 Under certain conditions, use direct current electrolysis for 25 minutes to form anodic oxide film,...

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Abstract

The invention discloses a blue colorant and a coloring method for an aluminum material. The blue colorant comprises the components of liquid A and B, wherein the liquid A comprises 30 to 40 parts of ammonium molybdate and 800 to 1000 parts of water by weight, the liquid B comprises the following components in parts by weight: 30 to 40 parts of sulfuric acid, 8 to 15 parts of phosphoric acid, 10 to 15 parts of stannous sulfate, 10 to 15 parts of cresol sulfonic acid, 5 to 10 parts of sulfanilic acid, 2 to 6 parts of citric acid and 800 to 1000 parts of water. The coloring method comprises the steps of degreasing, cleaning, polishing, re-degreasing, re-cleaning and coloring. The results of a performance test performed on the provided colorant by the invention after coloring show that the colorant has excellent stable performance in all acid-resisting, alkalis-resisting and salt fog-resisting tests, and can be used under relatively-extreme conditions.

Description

technical field [0001] The invention belongs to the field of metal material dyeing, in particular to an aluminum material blue colorant and a coloring method thereof. Background technique [0002] Aluminum and aluminum alloys are currently one of the most economically applicable materials that are widely used. Since 1956, the world's aluminum output has surpassed that of copper, and it has always ranked first in non-ferrous metals. The current production and consumption of aluminum (calculated by ton) is second only to steel, and has become the second largest metal used by human beings. Aluminum's light weight and corrosion resistance are two outstanding features of its performance. The density of pure aluminum is about 2.7g / cm 3 , only one-third of the density of iron and copper. Whether it is solid aluminum or molten aluminum, its density decreases with the increase of purity; the density of molten aluminum of the same purity decreases with the increase of temperature....

Claims

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Application Information

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IPC IPC(8): C25D11/14C25D3/44
Inventor 徐志坚
Owner WUJIANG LONGXU METAL PROD
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