Surface treatment process for aluminum alloy sections for doors and windows

A technology of aluminum alloy profiles and surface treatment, which is applied in the direction of surface reaction electrolytic coating, anodic oxidation, electrolytic coating, etc., can solve the problems of easy scratches or scratches, low surface hardness, and not too long time, etc., to achieve glossiness Color, high hardness and strength, long-term effect

Inactive Publication Date: 2017-10-27
HEFEI YAKELI NEW BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, limited by the physical and chemical properties of aluminum itself, on the one hand, its surface hardness is low, and it is prone to scratches or scratches; on the other hand, the color of the panels and profiles produced can remain bright for a period However, after a period of time (usually about one-third of its equipment life), its color will become lighter or even completely faded, especially in an environment with strong light intensity and long light time, it can keep bright degree time will be shorter
In the 1990s, a stainless-steel-like aluminum profile appeared on the market. It used electrophoresis to form a layer of stainless steel-like metal color film on the surface of the aluminum profile. Although its surface hardness is higher than that of conventional aluminum profiles Slightly higher, but the time it can maintain (including hardness and color) is not too long, so its durability is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A surface treatment process for aluminum alloy profiles for doors and windows, comprising the following steps:

[0026] a. Degreasing: Use acid degreasing method on the profile to remove oil stains and grease marks on the surface of the profile;

[0027] b. Wire drawing: use a wire drawing machine to process the profile to produce silk patterns on the surface of the profile, select a wire drawing wheel with a diameter of 150mm, the profile walking speed is 15m / min, and the speed of the wire drawing wheel is 1300r / min;

[0028] c. Chemical polishing: Use a solution with a temperature of 120°C, 200ml of phosphoric acid with a concentration of 85%, 700ml of sulfuric acid with a concentration of 98%, and 50g of polishing agent to chemically polish the profile. The chemical polishing time is 30min;

[0029] d. Anodizing: use the profile treated in steps a-d as an anode, immerse it in an electrolyte solution with a sulfuric acid weight content of 18%, at a current density of...

Embodiment 2

[0042] A surface treatment process for aluminum alloy profiles for doors and windows, comprising the following steps:

[0043] a. Degreasing: Use acid degreasing method on the profile to remove oil stains and grease marks on the surface of the profile;

[0044] b. Wire drawing: use a wire drawing machine to process the profile to produce silk patterns on the surface of the profile, use a wire drawing wheel with a diameter of 200mm, the profile walking speed is 10m / min, and the speed of the wire drawing wheel is 1600r / min;

[0045] c. Chemical polishing: Use a solution with a temperature of 90°C, a solution containing 800ml of phosphoric acid with a concentration of 85%, 100ml of sulfuric acid with a concentration of 98%, and 100g of polishing agent to chemically polish the profile. The chemical polishing time is 20min;

[0046] d. Anodizing: use the profile processed through steps a-d as an anode, and immerse it in an electrolyte solution with a sulfuric acid weight content o...

Embodiment 3

[0059] A surface treatment process for aluminum alloy profiles for doors and windows, comprising the following steps:

[0060] a. Degreasing: Use acid degreasing method on the profile to remove oil stains and grease marks on the surface of the profile;

[0061] b. Wire drawing: use a wire drawing machine to process the profile to produce silk patterns on the surface of the profile, select a wire drawing wheel with a diameter of 180mm, the profile walking speed is 13m / min, and the speed of the wire drawing wheel is 1450r / min;

[0062] c. 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 75g of polishing agent to chemically polish the profile. The chemical polishing time is 25min;

[0063] d. Anodizing: use the profile processed through steps a-d as an anode, and immerse it in an electrolyte solution with a sulfuric acid weight content of 20%, at a current...

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Abstract

The invention provides a surface treatment process of aluminum alloy profiles for doors and windows, comprising the following steps: a. oil removal; b. wire drawing; c. chemical polishing; d. anodic oxidation; e. corrosion protection. The surface of the aluminum alloy profile treated with the surface treatment process of the aluminum alloy profile for doors and windows of the present invention not only has relatively high hardness and strength, but also has a bright color and luster, and can be maintained for a long time.

Description

technical field [0001] The invention relates to the technical field of metal doors and windows, in particular to a surface treatment process of aluminum alloy profiles for doors and windows. Background technique [0002] Aluminum has a face-centered cubic structure, so it has high plasticity, is easy to process, has good electrical conductivity, thermal conductivity, and corrosion resistance, etc., but the strength of pure aluminum is very low, so it needs to be alloyed to be used as a structural material use. Aluminum alloy has low density, but relatively high strength and good plasticity. It can be processed into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, etc., and is widely used in industries. Aluminum alloy products are widely used in the decoration of doors, windows, gate control, curtain walls, home appliances and bathroom products. [0003] However, limited by the physical and chemical properties of alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/03C25D11/08C25D11/24B24B1/00
CPCC23F3/03B24B1/00C25D11/08C25D11/246
Inventor 王磊
Owner HEFEI YAKELI NEW BUILDING MATERIAL CO LTD
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