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High-weather-resistance aluminum alloy sectional material

A technology of aluminum alloy profiles and high weather resistance, which is applied in the field of metal material manufacturing to achieve the effect of high safety and excellent tensile strength

Inactive Publication Date: 2018-06-12
黄发金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, multi-stage aging is a very complicated process. Each aluminum alloy with different formula needs different multi-stage aging.
[0004] The present invention aims to provide a new high-weather-resistant aluminum alloy profile production process. It is fully optimized from raw materials to process parameters. It is unexpectedly found that under the optimized parameters, excellent aluminum alloy profiles with high weather resistance and corrosion resistance can be produced. , very suitable for outdoor use, such a process has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A production method of high weather resistance aluminum alloy profiles:

[0032] (1) Ingredients and smelting:

[0033] Ingredients according to mass percentage: Zn 7%, Cu 1.5%, Fe 1%, Mn 3%, Mg 2%, Si 0.5%, Cr 0.2%, Ni 0.08%, Ti 0.03%, the rest is Al, smelting at 780°C for 6h , to obtain aluminum alloy melt;

[0034] (2) Casting:

[0035] Cast the obtained aluminum alloy solution at a temperature of 720°C and a casting speed of 70mn / min to form a cast rod, cut it into a short rod with a length of 600mm, remove the scale on its surface, and obtain an aluminum alloy ingot;

[0036] (3) Annealing:

[0037] Perform homogenizing annealing on the obtained aluminum alloy ingot at an annealing temperature of 460° C. for 25 hours;

[0038] (4) Two-step heat treatment:

[0039] The aluminum alloy ingot was placed in a resistance heating furnace for two-stage heating, the aluminum alloy ingot was heated to 350°C for 1 hour, and after air cooling, it was continued to be heate...

Embodiment 2

[0047] A production method of high weather resistance aluminum alloy profiles:

[0048] (1) Ingredients and melting:

[0049] Ingredients according to mass percentage: Zn 8.8%, Cu 0.8%, Fe 4%, Mn 2%, Mg 3%, Si 0.2%, Cr 0.8%, Ni 0.08%, Ti 0.03%, the rest is Al, smelting at 700°C 8h, obtain aluminum alloy melt;

[0050] (2) Casting:

[0051] Cast the obtained aluminum alloy solution at a temperature of 700°C and a casting speed of 85 mm / min to form a cast rod, cut into a short rod with a length of 500 mm, and remove the scale on its surface to obtain an aluminum alloy ingot;

[0052] (3) Annealing:

[0053] Perform homogenizing annealing on the obtained aluminum alloy ingot at an annealing temperature of 475° C. for 20 hours;

[0054] (4) Two-step heat treatment:

[0055] The aluminum alloy ingot was put into a resistance heating furnace for two-stage heating, the aluminum alloy ingot was heated to 350°C for 1 hour, and after air cooling, it was continued to be heated to 50...

Embodiment 3

[0063] A production method of high weather resistance aluminum alloy profiles:

[0064] (1) Ingredients and smelting:

[0065] Ingredients according to mass percentage: Zn 7.3%, Cu 1.4%, Fe 2%, Mn 3%, Mg 2%, Si 0.4%, Cr 0.6%, Ni 0.08%, Ti 0.03%, the rest is Al, smelting at 710°C 7h, obtain aluminum alloy melt;

[0066] (2) Casting:

[0067] Cast the obtained aluminum alloy solution at a temperature of 715°C and a casting speed of 78mn / min to form a cast rod, cut it into a short rod with a length of 535mm, remove the scale on its surface, and obtain an aluminum alloy ingot;

[0068] (3) Annealing:

[0069] Perform homogenizing annealing on the obtained aluminum alloy ingot at an annealing temperature of 463° C. for 23 hours;

[0070] (4) Two-step heat treatment:

[0071] The aluminum alloy ingot was placed in a resistance heating furnace for two-stage heating, the aluminum alloy ingot was heated to 350°C for 1 hour, and after air cooling, it was continued to be heated to 5...

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Abstract

The invention discloses a production method for a high-weather-resistance aluminum alloy sectional material. The production method comprises the following steps: preparing materials and smelting, specifically, preparing materials in percentage by mass: 7%-8.8% of Zn, 0.8%-1.5% of Cu, 1%-4% of Fe, 2%-3% of Mn, 2%-3% of Mg, 0.2%-0.5% of Si, 0.2%-0.8% of Cr, 0.08% of Ni, 0.03% of Ti and the balance Al, and smelting at a high temperature for 6h to 8h to obtain an aluminum alloy melt; casting; annealing; carrying out two-step heat treatment; extruding the treated aluminum alloy cast ingot through an aluminum alloy sectional material die to obtain the aluminum alloy sectional material; carrying out double-stage aging and air-cooling on the aluminum alloy sectional material; and finally carryingout oxidation treatment. According to the process disclosed by the invention, the super-weather-resistant and corrosion-resistant aluminum alloy sectional material can be prepared without the need ofadditional spraying, and the process is energy-saving and environment-friendly, and high in safety.

Description

technical field [0001] The invention belongs to the technical field of metal material manufacturing, and in particular relates to a highly weather-resistant aluminum alloy profile and a production process thereof. Background technique [0002] Aluminum alloy profiles are commonly used as a building material. Before the aluminum alloy profile is used, in order to improve the anti-corrosion performance of the profile and have a certain color decoration effect, the surface of the profile must be treated. Aluminum alloy profile products are divided into oxidation coloring, spraying organic coating and other products according to the surface treatment method. Oxidation coloring products are based on the principles of anodic oxidation and electrolytic coloring to form a dense oxide film on the surface of aluminum alloy profiles and electrolytically reduce a certain amount of non-ferrous metal ions in the oxide film to present a certain color. Spraying organic coating products is...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22F1/053C25D11/08
CPCC22C21/10C22F1/053C25D11/08
Inventor 黄发金
Owner 黄发金
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