High-performance electrophoresis aluminum alloy construction section bar and method for making same

An aluminum alloy profile, high-performance technology, used in electrophoretic plating, electrolytic coatings, anodizing and other directions, can solve problems such as insufficient film thickness, uneven electrophoretic paint film, and low adhesion

Inactive Publication Date: 2008-11-05
CHENGDU SUNSHINE ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of uneven electrophoretic paint film, insufficient film thickness, low adhesion, insufficient hardness, wear resistance and corrosion resistance caused by the coarse second phase impurities contained in the base aluminum alloy in the production process

Method used

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  • High-performance electrophoresis aluminum alloy construction section bar and method for making same
  • High-performance electrophoresis aluminum alloy construction section bar and method for making same
  • High-performance electrophoresis aluminum alloy construction section bar and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.04% rare earth elements, continuously casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot-extruding at 430-450°C to form an aluminum alloy profiles. Then by anodic oxidation (H 2 SO 4 130~200g / L, Al 3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.50%Mg-0.43%Si-0.04%RE-0.016%Ti-0.0029%B-0.20%Fe.

Embodiment 2

[0021] Example 2: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.06% rare earth elements, continuous casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot extrusion at 430-450°C to form aluminum alloys profiles. Then by anodic oxidation (H 2 SO 4 130~200g / L, Al3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.53%Mg-0.41%Si-0.06%RE-0.012%Ti-0.0027%B-0.17%Fe.

Embodiment 3

[0022] Example 3: In the process of alloy smelting, by adding massive rare earth aluminum titanium boron refining modifier, adding 0.08% of rare earth elements, continuously casting into rod-shaped ingots, homogenizing at 560°C for 6 hours, and hot extrusion at 430-450°C to form aluminum alloys Profiles, aged at 200°C for 2 hours after air cooling and quenching. Then by anodic oxidation (H 2 SO 4 130~200g / L, Al 3+ ≤30g / L, temperature: 18~25℃, current density: 100~250A / m 2 , Oxidation voltage: 12-18V, oxidation time ≤ 10min), electrophoretic painting (voltage 100-180V, current 200-800A, time 1-3min, baking 180±5°C, constant temperature 30min) and other processes to produce electrophoretic aluminum alloy Building profiles. The composition and mass percentage of the alloy are: 0.51%Mg-0.43%Si-0.08%RE-0.019%Ti-0.0035%B-0.13%Fe.

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Abstract

The invention discloses an electrophoretic aluminum alloy building proximate matter with high performance and a preparation method thereof, and belongs to the technical field of aluminum alloy application. The electrophoretic aluminum alloy building proximate matter consists of following ingredients by mass: 0.5 to 0.54 percent of Mg, 0.4 to 0.44 percent of Si, 0.04 to 0.08 percent of RE, 0.01 to 0.02 percent of Ti, 0.002 to 0.004 percent of B, 0 to 0.2 percent of Fe and remaining aluminum. The preparation method of the electrophoretic aluminum alloy building proximate matter consists of following steps: a misch metal ingot, an alloy of Al, Ti and B, and a pure aluminum ingot are smelted into a refining and modifying agent of RE, Al, Ti and B; the refining and modifying agent is added during an alloy smelting process and cast into an aluminum rod; the electrophoretic proximate matter with high performance is prepared by techniques of squeeze aging and oxidizing electrophoresis, etc. By utilizing rare earth to subdivide second-phase particles, electrophoretic paint films of the proximate matter that are obtained by improving surface processing performance have higher uniformity, adhesive attraction, wear resistance, corrosion resistance and large film thickness than common proximate matters, and can be widely used for aluminum alloy doors and windows of buildings and curtain walls.

Description

Technical field: [0001] The invention relates to an aluminum alloy building profile and a preparation method thereof, in particular to a high-performance electrophoresis aluminum alloy profile and a preparation method thereof. Background technique: [0002] The application of rare earth in aluminum alloy profiles is very extensive, and there are many studies. Patent Publication No. CN1332259A discloses a rare-earth aluminum alloy rod for extruded profiles, which is to make the aluminum alloy smelt at 670-800° C., and add a mixed rare-earth alloy content of 0.05-0.35%. This kind of rare earth aluminum alloy rod can be made into various profiles for decorative parts and structural parts after extrusion. This profile has good corrosion resistance and better welding performance than ordinary aluminum alloy profiles, and further improves the mechanical properties of the profiles. Strength, can be widely used in various structural parts. The patent publication number is CN117145...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C25D11/04C25D13/22
Inventor 廖健
Owner CHENGDU SUNSHINE ALUMINUM
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