Production method of oxidation-colored electrophoresis-painted aluminum alloy section bars

An aluminum alloy profile and electrophoretic painting technology, applied in the field of aluminum alloy material processing, can solve the problems of easy paint peeling and poor corrosion resistance, and achieve the effects of stable composition, stable performance and improved comprehensive performance.

Active Publication Date: 2014-07-09
安徽家园铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current alloy profiles processed from 2024 aluminum alloys have disadvantages such as poor corrosion resistance and easy paint drop.

Method used

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  • Production method of oxidation-colored electrophoresis-painted aluminum alloy section bars
  • Production method of oxidation-colored electrophoresis-painted aluminum alloy section bars

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Aluminum ingot and other raw material ingredients

[0031] According to the following parts by weight of raw materials: 70 parts of aluminum ingots, 30 parts of recycled aluminum profile scraps and other waste aluminum, 8 parts of modified fly ash;

[0032] (2) Melting and casting aluminum alloy round ingots

[0033] Put aluminum ingots, recycled aluminum profile scraps and other scrap aluminum into the melting furnace for smelting. When it becomes a molten state, add modified fly ash to make it evenly distributed, and then add an appropriate amount of AlTiC grain refiner for smelting. Refining, by adding alloying elements, so that the mass percentage of each element is: Si ≤0.5%, Mg 1.2-1.8%, Fe ≤0.50%, Cu ≤3.8-4.9%, Mn 0.30-1.0%, Cr ≤0.10 %, Zn ≤0.25%, Ti ≤0.15%, total other elements ≤0.15%, and the rest is Al. Finally, the slag and gas in the melt are effectively removed by degassing and slagging;

[0034] (3) Casting and sawing

[0035] Before casting, let the molten al...

Embodiment 2

[0049] (1) Aluminum ingot and other raw material ingredients

[0050] According to the following parts by weight of raw materials: 60 parts of aluminum ingots, 40 parts of recycled aluminum profile scraps and other waste aluminum, 10 parts of modified fly ash;

[0051] (2) Melting and casting aluminum alloy round ingots

[0052] Put aluminum ingots, recycled aluminum profile scraps and other scrap aluminum into the melting furnace for smelting. When it becomes a molten state, add modified fly ash to make it evenly distributed, and then add an appropriate amount of AlTiC grain refiner for smelting. Refining, by adding alloying elements, the mass percentage of each element is: Si ≤0.5%, Mg 1.2-1.8%, Fe ≤0.50%, Cu ≤3.8-4.9%, Mn 0.30-1.0%, Cr ≤ 0.10%, Zn ≤0.25%, Ti ≤0.15%, total other elements ≤0.15%, the rest is Al, and finally the slag and gas in the melt are effectively removed by degassing and slagging;

[0053] (3) Casting and sawing

[0054] Before casting, let the molten aluminum s...

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Abstract

The invention disclosed a production method of oxidation-colored electrophoresis-painted 2024 aluminum alloy section bars. The production method comprises the steps of aluminum ingot and other raw material preparation, aluminum alloy round ingot smelting and casting; casting and sawing; annealing treatment; extrusion molding, oxidation coloring treatment, electrophoresis painting treatment, baking, and the like. According to the invention, anodic oxidation treatment and electrophoresis painting methods are adopted, such that an anti-corrosion performance is improved. According to the invention, waste aluminum material is added into the raw materials, such that aluminum section bar property stability can be promoted, and the possibility of influences on aluminum section bar qualities caused by undetected materials appeared at molten aluminum smelting is reduced. Silicon carbide and modified fly ash are added, such that aluminum alloy strength and hardness are improved, and aluminum alloy comprehensive performance can be improved. The surface of the aluminum section bar is subjected to a plasma treatment, such that painting firmness is improved.

Description

Technical field [0001] The invention relates to a production method of oxidation coloring electrophoretic painting 2024 aluminum alloy profile, and belongs to the technical field of aluminum alloy material processing. Background technique [0002] 2024 aluminum alloy is a typical hard aluminum alloy in the aluminum-copper-magnesium series, with reasonable composition and good overall performance. Many countries produce this alloy, which is the largest in duralumin. The characteristics of the alloy are: high strength, a certain degree of heat resistance, can be used as working parts below 150 ℃. At temperatures higher than 125°C, the strength of 2024 alloy is higher than that of 7075 alloy. Forming performance is better in thermal state, annealing and new quenching state, and the heat treatment strengthening effect is significant. It is widely used in aircraft structures, rivets, truck wheels, propeller components and other various structural parts. However, the current all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/12C22C1/02B21C23/00C22F1/057C25D11/22
Inventor 张广勋谭浩沈勇张燕辉
Owner 安徽家园铝业有限公司
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