Surface treatment process for high-gloss aluminum alloy drawing profiles

An aluminum alloy wire drawing and surface treatment technology, which is applied in the direction of surface reaction electrolytic coating, anodic oxidation, electrolytic coating, etc., can solve the problems of aluminum material without metallic luster, aluminum defect amplification, high cost, etc., and achieve smooth and delicate hand feeling Effect

Active Publication Date: 2010-09-29
FUJIAN MINFA ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used surface treatment processes for aluminum alloy profiles include: anodic oxidation, electrophoretic coating, powder coating, painting, polishing, thermal transfer, etc. The surface of ordinary anodized aluminum has obvious mechanical texture, and electrophoretic coating is applied on aluminum A layer of transparent film is compounded on the basis of anodic oxidation of the profile, which can make the surface of the aluminum material have a smooth effect, but it will enlarge the defects of the aluminum material. Polishing can make the surface of the aluminum material have a mirror effect, but the cost is high and the applicability is narrow. The aluminum profiles that are transferred, sprayed, and painted do not have the metal color of aluminum, which affects the appearance
[0004] In view of the problems existing in the above process, it is necessary to seek a new aluminum alloy profile surface treatment process to overcome the mechanical texture of the aluminum material caused by ordinary anodic oxidation and electrophoretic coating and the non-metallic luster of the aluminum material caused by heat transfer printing, powder spraying and painting. Defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The surface treatment process of the high-gloss aluminum alloy wire drawing profile in this embodiment includes the following steps:

[0016] a) Wire drawing: use a wire drawing machine to process the profile to produce silk lines on the surface of the profile, select a Φ40mm wire drawing wheel, the profile walking speed is 5m / min, and the drawing wheel speed is 1000 rpm;

[0017] b) Chemical polishing: use a solution with a temperature of 90°C, 200ml of phosphoric acid with a concentration of 85% per liter, 100ml of sulfuric acid with a concentration of 98%, and 5g of polishing agent to chemically polish the profile. The chemical polishing time is In 1 minute, a highly reflective mirror effect is formed on the surface of the aluminum material, so that the brushed texture has a three-dimensional effect and meets high decorative requirements;

[0018] c) Illumination: Use a solution with a ratio of 3g of NaOH per liter and 5g of light-extracting agent to soak the profile...

Embodiment 2

[0022] The surface treatment process of the high-gloss aluminum alloy wire drawing profile in this embodiment includes the following steps:

[0023] a) Wire drawing: use a wire drawing machine to process the profile to produce silk patterns on the surface of the profile, select a Φ145mm wire drawing wheel, the profile walking speed is 14.5m / min, and the wire drawing wheel speed is 1400 rpm;

[0024] b) Chemical polishing: Use a solution with a temperature of 105°C, 500ml of phosphoric acid with a concentration of 85%, 400ml of sulfuric acid with a concentration of 98%, and 50g of polishing agent to chemically polish the profile. The chemical polishing time is In 15 minutes, a highly reflective mirror effect is formed on the surface of the aluminum material, so that the brushed texture has a three-dimensional effect and meets high decorative requirements;

[0025] c) Luminescence: Soak the profile for 2.5 minutes with a solution containing 50g of NaOH per liter and 40g of light...

Embodiment 3

[0029] The surface treatment process of the high-gloss aluminum alloy wire drawing profile in this embodiment includes the following steps:

[0030] a) Wire drawing: Use a wire drawing machine to process the profile to produce silk patterns on the surface of the profile, select a Φ250mm wire drawing wheel, the profile walking speed is 20m / min, and the drawing wheel speed is 1800 rpm;

[0031] b) Chemical polishing: Use a solution with a temperature of 120°C, 800ml of phosphoric acid with a concentration of 85%, 700ml of sulfuric acid with a concentration of 98%, and 100g of polishing agent to chemically polish the profile. The chemical polishing time is In 30 minutes, a highly reflective mirror effect is formed on the surface of the aluminum material, so that the brushed texture has a three-dimensional effect and meets high decorative requirements;

[0032] c) Illumination: Use a solution containing 100g of NaOH per liter and 80g of light-extracting agent to soak the profile f...

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Abstract

The invention discloses a surface treatment process for high-gloss aluminum alloy drawing profiles, which comprises the steps of drawing, chemical polishing, burnishing, anodizing and plugging. The surface treatment process can be used for manufacturing aluminum profiles with filamentous surface textures, smooth and exquisite hand feeling and high-gloss metallic natural color; the surface treatment process overcomes the defects that common anodizing and electrophoretic painting enable aluminum products to have mechanical lines, and heat transfer printing, powder spraying and paint spraying enable aluminum products to have no metallic gloss; and the surface treatment process is suitable for production of household electrical appliances, bathrooms and other products with high decorative requirements.

Description

technical field [0001] The invention relates to metal surface treatment, in particular to a surface treatment process for high-gloss aluminum alloy wire drawing profiles. Background technique [0002] Aluminum alloy profiles are widely used in the decoration of doors, windows, curtain walls, indoor ceilings, door partitions, home appliances, bathrooms and other products. Therefore, higher and higher requirements are put forward for the appearance of aluminum alloy profiles, that is, the surface treatment of aluminum alloy profiles higher and higher requirements. [0003] Commonly used surface treatment processes for aluminum alloy profiles include: anodic oxidation, electrophoretic coating, powder coating, painting, polishing, thermal transfer, etc. The surface of ordinary anodized aluminum has obvious mechanical texture, and electrophoretic coating is applied on aluminum A layer of transparent film is compounded on the basis of anodic oxidation of the profile, which can ma...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/18C25D11/16C23F3/03B21C1/02
Inventor 梁世斌刘煌萍张世升
Owner FUJIAN MINFA ALUMINUM
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