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Aluminum die-casting alloy suitable for anodic oxidation treatment and preparation method thereof

A cast aluminum alloy, anodic oxidation technology, applied in the field of aluminum alloy, can solve problems such as dullness, poor coloring effect, low film forming efficiency, etc.

Inactive Publication Date: 2011-06-29
GUIYANG GUANGHANG CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing methods to improve the anodizing treatment of aluminum alloys are mostly to change the pH of the electrolyte solution or to adjust the voltage. The adjustment of this process is troublesome, and the effect cannot be guaranteed. At the same time, the existing anodizing treatment is prone to the following problems: Low film efficiency, thin film layer, poor uniformity, dull, often with stains, poor coloring effect and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Take Si: 110kg, Fe: 8kg, Al: 882kg and put them into a smelting furnace for smelting.

Embodiment 2

[0032] Example 2: Si: 130 kg, Cu: 1 kg, Mg 1 kg, Zn 1 kg, Fe: 10 kg, Mn: 5 kg, AL: 852 kg were put into a melting furnace for melting.

Embodiment 3

[0033] Example 3, take 1 ton of the aluminum alloy material with the Japanese brand ADC2, take a piece to test the iron content in it, and after obtaining the test value, put the aluminum alloy with the Japanese brand ADC2 into the aluminum melting furnace, and then melt it after the aluminum alloy is melted Iron is added into the aluminum furnace so that the iron content in the aluminum alloy in the hot melt state is 0.8-1.0%.

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PUM

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Abstract

The invention discloses an aluminum die-casting alloy suitable for anodic oxidation treatment, which comprises the following components in percentage by weight: 11-13% of Si, 0-0.1% of Cu, 0-0.1% of Mg, 0-0.1% of Zn, 0.8-1.0% of Fe, 0-0.5% of Mn and the balance of AL. The aluminum die-casting alloy suitable for anodic oxidation treatment, which is disclosed by the invention, has the advantages of simple anodic oxidation, good oxidation effect, thick film layer and uniform color and luster, and the invention can overcome the defects of the prior art.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to a die-casting aluminum alloy suitable for anodic oxidation treatment and a preparation method thereof. Background technique [0002] The surface of aluminum and its alloys is easy to form a layer of extremely thin aluminum oxide film (thickness is about 0.01 ~ 0.02um), which has a certain corrosion resistance in the atmosphere. But because this layer of oxide film is amorphous, it makes the surface of the aluminum part lose its original luster. In addition, the oxide film is loose, porous, uneven, not strong in corrosion resistance, and easily stained. Therefore, aluminum and its alloy products usually need to be anodized. [0003] After anodic oxidation treatment, the surface of aluminum and its alloys can obtain a dense film layer (from tens of microns or even hundreds of microns) that is much thicker than the natural oxide film. After this layer of artificial oxide film is sealed, the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02
Inventor 何勇
Owner GUIYANG GUANGHANG CASTING
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