Anodic oxidation die-casting aluminum alloy material and preparation method thereof

A technology for anodizing and casting aluminum alloys is applied in the field of aluminum alloy materials to achieve the effects of improving the toughness of the alloy, a simple preparation method, and reducing the sensitivity of stress corrosion cracking

Pending Publication Date: 2020-10-09
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing die-cast aluminum alloy cannot be anodized due to its composition

Method used

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  • Anodic oxidation die-casting aluminum alloy material and preparation method thereof
  • Anodic oxidation die-casting aluminum alloy material and preparation method thereof
  • Anodic oxidation die-casting aluminum alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] An anodic oxidation die-casting aluminum alloy material is characterized in that it includes the following components in mass percentage: Mg 2.8%, Mn 0.9%, Co 0.4%, Cr 0.15%, Sr 0.018%, Si 0.14%, Fe 0.08%, Cu 0.02%, Al95.49%.

[0036] A method for preparing an anodized die-casting aluminum alloy material, specifically comprising the following steps:

[0037] (1) Remelt the pure aluminum ingot, and add Al-Si20, Al-Mn10, Al-Co5, Al-Cr10, Al-Sr10 master alloys in sequence when the temperature in the furnace is raised to 730°C until the raw materials are completely melted , to obtain alloy liquid A;

[0038] (2) Heat the alloy solution A at 740°C for 30 minutes, stir for 8 minutes to remove slag and degas, then lower the temperature to 680°C, wrap the magnesium ingot with aluminum foil and place it in the alloy solution A, and wait until it is completely melted to obtain alloy liquid B;

[0039] (3) Stir the melted alloy liquid B evenly for 10 minutes, raise the temperatur...

Embodiment 2

[0050] An anodic oxidation die-casting aluminum alloy material is characterized in that it includes the following components in mass percentage: Mg3.3%, Mn 1.2%, Co 0.35%, Cr 0.18%, Sr 0.024%, Si 0.16%, Fe 0.08%, Cu 0.04%, Al 94.67%.

[0051] A method for preparing an anodized die-casting aluminum alloy material, specifically comprising the following steps:

[0052] (1) Remelt the pure aluminum ingot, and then add Al-Si20, Al-Mn10, Al-Co5, Al-Cr10, Al-Sr10 master alloys in sequence when the temperature in the furnace is raised to 720°C until the raw materials are completely melted , to obtain alloy liquid A;

[0053] (2) Heat the alloy solution A at 730°C for 40 minutes, stir for 10 minutes to remove slag and degas, then lower the temperature to 690°C, wrap the magnesium ingot with aluminum foil and place it in the alloy solution A, and wait until it is completely melted to obtain alloy liquid B;

[0054] (3) Stir the melted alloy liquid B evenly for 10 minutes, raise the t...

Embodiment 3

[0065] An anodic oxidation die-casting aluminum alloy material is characterized in that it includes the following components in mass percentage: Mg 2.8%, Mn 1.05%, Co 0.4%, Cr 0.16%, Sr 0.02%, Si 0.08%, Fe 0.14%, Cu 0.03%, Al95.32%.

[0066] A method for preparing an anodized die-casting aluminum alloy material, specifically comprising the following steps:

[0067] (1) Remelt the pure aluminum ingot, and add Al-Si20, Al-Mn10, Al-Co5, Al-Cr10, Al-Sr10 master alloys in sequence when the temperature in the furnace is raised to 740°C until the raw materials are completely melted , to obtain alloy liquid A;

[0068] (2) Heat the alloy solution A at 740°C for 30 minutes, stir for 8 minutes to remove slag and degas, then cool down to 700°C, wrap the magnesium ingot with aluminum foil and place it in the alloy solution A, and wait until it is completely melted to obtain alloy liquid B;

[0069] (3) Stir the melted alloy liquid B evenly for 10 minutes, raise the temperature to 750°C...

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Abstract

The invention discloses an anodic oxidation die-casting aluminum alloy material and a preparation method thereof. The anodic oxidation die-casting aluminum alloy material comprises, by mass percent, 2.5-3.5% of Mg, 0.8-1.2% of Mn, 0.2-0.5% of Co, 0.1-0.2% of Cr, 0.01-0.03%of Sr, less than or equal to 0.2% of Si, less than or equal to 0.15% of Fe, less than or equal to 0.05% of Cu, and the balanceAl. According to the material and the method, by optimizing components of an aluminum-manganese system die-casting aluminum alloy material, the material can achieve a good anodic oxidation effect, thedefects of aluminum alloy surface hardness, wear resistance and the like are overcome, and the application range is expanded; and meanwhile, the preparation method is simple, the corrosion effect ofan aluminum alloy on a casting crucible can be reduced, meanwhile, the plasticity of the aluminum alloy is increased, the generation of defects such as thermal cracks, shrinkage cavities, shrinkage porosity and the like is reduced, a honeycomb porous structure on the surface of an anodic oxidation film generated on the surface of the aluminum alloy through the anodic oxidation process is uniform in dye coloring, and the compact anodic oxidation film formed after pore sealing has high surface hardness, wear resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to an anodized die-casting aluminum alloy material and a preparation method thereof. Background technique [0002] Aluminum and aluminum alloys have the characteristics of low density, high specific strength, good plasticity, excellent mechanical properties, low thermal expansion coefficient, good corrosion resistance, excellent electrical and thermal conductivity, easy processing, and recyclability. It has been widely used in fields such as machinery manufacturing, shipbuilding, chemical industry and packaging, and has become the most widely used non-ferrous metal material in modern industry (especially the automobile industry), and it is also a green and sustainable non-ferrous metal Material. However, the problem of aluminum alloy material is that its strength is not high and its machinability is poor, which limits its use. At the same time, with the development of the a...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C21/08C22C1/03C22C1/06C25D11/16C25D11/24C23F3/03C25D11/08C25D11/10
CPCC22C1/026C22C1/03C22C1/06C22C21/06C22C21/08C23F3/03C25D11/08C25D11/10C25D11/16C25D11/243C25D11/246
Inventor 郭纯胡瑞章陈丰魏宝丽
Owner ANHUI SCI & TECH UNIV
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