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Electrophoresis technique for transparent colorful water-based paint on surface of aluminum profile

A technology of water-based paint and aluminum profiles, which is applied in the field of metal surface treatment, can solve the problems of unstable batches of coloring effects, many mechanical equipment, and large production energy consumption, so as to save the coloring process, save oxidation time, The effect of reducing waste water discharge

Inactive Publication Date: 2018-09-04
佛山市斯芬克斯贸易有限公司
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Problems solved by technology

[0003] The existing electrophoretic process is mainly aimed at electrophoretic varnish and electrophoretic colored paint, and generally has the following disadvantages: 1. Large environmental pollution discharge; 2. High production cost; 3. Low production efficiency; 4. The coloring effect is unstable in batches, and the qualified rate of good products Low; 5. More machinery and equipment are put in; 6. Large energy consumption in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The steps of the electrophoresis process of transparent colored water-based paint on the surface of aluminum profiles are:

[0021] 1. Sand the surface of the aluminum profile.

[0022] 2. Soak in the mixture of phosphoric acid and sulfuric acid at a temperature of 95-125°C for 2 minutes to 4 minutes. The ratio of phosphoric acid and sulfuric acid is 6:4. Of course, it can also be a mixture of phosphoric acid, sulfuric acid and nitric acid, and the ratio of phosphoric acid: sulfuric acid: nitric acid is 6:3:1. Among them, the phosphoric acid concentration is 85%, the sulfuric acid concentration is 98%, and the nitric acid concentration is 98%.

[0023] 3. Wash with clean water for 3 times to remove the acid.

[0024] 4. Neutralize and remove ash. After high-temperature acid immersion, the surface of the aluminum profile is covered with a layer of gray-black substance, which needs to be removed by a strong oxidant (15% nitric acid), and the aluminum profile reveals a ...

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Abstract

The invention discloses an electrophoresis technique for transparent colorful water-based paint on the surface of an aluminum profile. The technique mainly comprises the steps of soaking, washing, dusting, electrophoresis, rinsing, baking and the like; the transparent colorful water-based paint can be manufactured on the surface of the aluminum profile; the aluminum profile is more bright in color, smoother in surface, higher in transparency, higher in paint film adherence and more uniform in coloring.

Description

technical field [0001] The invention belongs to metal surface treatment, in particular to the electrophoresis process of transparent colored water-based paint on the surface of aluminum profiles. Background technique [0002] Electrophoretic coatings are widely used in various industries such as automobiles, light industry, construction, furniture, and electrical appliances. Electrophoretic coating is a relatively new coating process at present. It is a water-soluble organic coating with a positive (or negative) charge, which is uniformly dissolved (or dispersed) in an aqueous solution at a relatively dilute concentration. The conductive workpiece (coated object) is used as the anode (or cathode) and the metal stainless steel plate is used as the cathode (or anode). Under certain process conditions, a direct current is passed between the two poles (a higher voltage must be applied) , so that the electrophoretic coating is evenly deposited on the workpiece to form a water-in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/04C25D13/20C09D5/44
CPCC25D13/04C09D5/44C25D13/20
Inventor 胡光伟
Owner 佛山市斯芬克斯贸易有限公司
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