Surface spray process for aluminium alloy sections

A technology for aluminum alloy profiles and surface spraying, which is applied in the coating process of metal materials, pretreatment surfaces, and devices for coating liquids on surfaces, etc. It has problems such as strong adhesion, which can improve the anti-penetration ability, strengthen the adhesion, increase the binding force and the anti-oxidation ability.

Inactive Publication Date: 2015-10-07
YUYAO WANZHEN HARDWARE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aluminum alloy profiles and plates are widely used building decoration materials. In order to prevent the oxidation of aluminum alloy profiles and plates and prolong the service life of aluminum alloy profiles, it is necessary to spray plastic on the surface of aluminum alloy materials. In the process of treatment, degreasing and pickling are simply performed, so that the surface of the aluminum alloy cannot have strong adhesion, and it is eroded by air, acid rain and other pollution during use, and the penetration of ultraviolet rays shortens the service life of the aluminum material. Increased cost of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In an embodiment of the present invention, a surface spraying process of an aluminum alloy profile includes the following steps,

[0030] (1) Inspection: Aluminum alloy profiles are inspected one by one, and the profiles with obvious deformation, bubbles and rough defects are scrapped;

[0031] (2) Dust removal: use 0.6MPa compressed air to remove the dust on the surface of the aluminum alloy profile to be sprayed;

[0032] (3) Degreasing: put the aluminum alloy profiles after dedusting into a degreasing solution with a temperature of 35°C and soak for 3 minutes; the raw materials of the degreasing solution include phosphoric acid 65%, citric acid 12% and sodium nitrate 11% according to the mass percentage concentration ;

[0033] (4) Washing: Rinse the degreased aluminum alloy profiles with clean water for 2 minutes; then bake at 55°C for 20 minutes;

[0034] (5) Surface treatment: immerse the cleaned aluminum alloy profile in the surface treatment solution for 3 min...

Embodiment 2

[0044] In an embodiment of the present invention, a surface spraying process of an aluminum alloy profile includes the following steps,

[0045] (1) Inspection: Aluminum alloy profiles are inspected one by one, and the profiles with obvious deformation, bubbles and rough defects are scrapped;

[0046] (2) Dust removal: Use 0.5MPa compressed air to remove the dust on the surface of the aluminum alloy profile to be sprayed;

[0047] (3) Degreasing: put the aluminum alloy profile after dedusting into a degreasing solution with a temperature of 25°C and soak for 2 minutes; the raw materials of the degreasing solution include 75% of phosphoric acid, 8% of citric acid and 6% of sodium nitrate according to the mass percentage concentration ;

[0048] (4) Washing: Rinse the degreased aluminum alloy profiles with clean water for 3 minutes; then bake at 45°C for 30 minutes;

[0049] (5) Surface treatment: immerse the cleaned aluminum alloy profile in the surface treatment solution for...

Embodiment 3

[0059] In an embodiment of the present invention, a surface spraying process of an aluminum alloy profile includes the following steps,

[0060] (1) Inspection: Aluminum alloy profiles are inspected one by one, and the profiles with obvious deformation, bubbles and rough defects are scrapped;

[0061] (2) Dust removal: Use 0.5MPa compressed air to remove the dust on the surface of the aluminum alloy profile to be sprayed;

[0062] (3) Degreasing: put the aluminum alloy profile after dedusting into a degreasing solution with a temperature of 35°C and soak for 2 minutes; the degreasing solution includes 70% of phosphoric acid, 10% of citric acid and 8% of sodium nitrate according to the mass percentage concentration ;

[0063] (4) Washing: Rinse the degreased aluminum alloy profiles with clean water for 3 minutes; then bake at 45°C for 30 minutes;

[0064] (5) Surface treatment: immerse the cleaned aluminum alloy profile in the surface treatment solution for 3 minutes; the raw...

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Abstract

The invention discloses a surface spray process for aluminium alloy sections. Through a series of procedures such as dust removing, de-oiling, water washing, surface treatment, secondary water washing, priming paint spraying, first-time solidification treatment, finish paint spraying, second-time solidification treatment, finishing varnish spraying and third-time solidification treatment, aluminium alloy sections with strong adhesion performance are obtained. After examination, dedusting and deoiling, a chromium-free surface treatment fluid is utilized for treatment to form a safe and environment-friendly protective film, so that the binding force between a coating and an aluminium alloy surface is increased, the anti-oxidation capability is improved, and the service life of the aluminium alloy coating is prolonged; and a priming paint, a finish paint and a finishing varnish are sequentially sprayed on the surface of the protective film, and solidification treatment is conducted after each time of spraying, so that the adhesion between all layers is enhanced. The aluminium alloy sections obtained through plastic spraying are attractive and textured in surface and can meet the use requirements of more occasions; and meanwhile, the oxidation resistance of the aluminium alloy surface layers is greatly improved, a good anti-corrosion effect is achieved and environmental pollution is avoided.

Description

technical field [0001] The invention relates to a metal surface spraying technology, in particular to a surface spraying process of an aluminum alloy profile. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy, the demand for aluminum alloy welded structural parts is increasing. Aluminum alloy has low density, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, and has excellent electrical and thermal conductivity. [0003] Aluminum alloy profiles and plates are widely used building decoration materials. In order to prevent the oxidation of aluminum alloy profiles and plates and prolong the service life of aluminum alloy profiles, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/16B05D3/10B05D3/02C23C22/34C09D127/16C09D7/12C09D133/00C09D5/08
Inventor 沈婉珍
Owner YUYAO WANZHEN HARDWARE FACTORY
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