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High-strength die-casting aluminum alloy capable of being subjected to anodic oxidation coloring and preparation method of high-strength die-casting aluminum alloy

A casting aluminum alloy, anodic oxidation technology, applied in the field of die-casting aluminum alloy, can solve the problems of difficult coloring, poor anodic film-forming property, unsuitability, etc., and achieve high tensile strength, good film-forming property, and good die-casting performance

Inactive Publication Date: 2021-06-08
上海澜唐实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the existing aluminum alloys such as ADC12 have good die-casting properties, their anodic film-forming properties are poor and they are not easy to be colored, so they are not suitable for use as product appearance parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 of the present invention provides a high-strength anodized and colorable die-casting aluminum alloy, which includes the following elements by weight percentage: 0.03wt%≤Si≤0.8wt%; 0.05wt%≤Fe≤2.0wt% %; 0.2wt%≤Mn≤3wt%; 0.2wt%≤Mg≤6.0wt%; the balance is Al.

[0043] For example, the first proportion can be: Si 0.03wt%; Fe 0.05wt%; Mn 0.2wt%; Mg 0.2wt%; the balance is Al. The second proportion can be: Si 0.4wt%; Fe 1wt%; Mn 1wt%; Mg 2wt%; the balance is Al. The third proportion can be: Si 0.8wt%; Fe 2.0wt%; Mn 3wt%; Mg 6.0wt%; the balance is Al.

[0044] The preparation method of the die-casting aluminum alloy comprises the following steps:

[0045] (1) Prepare the following raw materials: pure Al ingot, pure Mg ingot, Al-20% Si master alloy, Al-20% Fe master alloy and Al-10% Mn master alloy;

[0046] (2) Take the corresponding raw materials according to the weight percentage of the above-mentioned die-casting aluminum alloy composition;

[0047] (3) Put pur...

Embodiment 2

[0067] Embodiment 2 of the present invention provides a high-strength anodized and colorable die-casting aluminum alloy, which includes the following elements by weight percentage: 0.03wt%≤Si≤0.8wt%; 0.05wt%≤Fe≤2.0wt% %; 0.2wt%≤Mn≤3wt%; 0.2wt%≤Mg≤6.0wt%; 0.03wt%≤Graphene≤0.8wt%; 0.05wt%≤Sr≤2.0wt%; 0.05wt%≤Sc≤2.0wt% %; the balance is Al.

[0068] For example, the first proportion can be: Si 0.03wt%; Fe 0.05wt%; Mn 0.2wt%; Mg0.2wt%; Graphene 0.03wt%; Sr 0.05wt%; for Al. The second proportion can be: 0.4wt% Si; 1wt% Fe; 1wt% Mn; 2wt% Mg; 0.2wt% graphene; 1wt% Sr; The third proportion can be: Si 0.8wt%; Fe 2.0wt%; Mn 3wt%; Mg 6.0wt%; graphene 0.8wt%; Sr 2.0wt%; Sc 2.0wt%;

[0069] The preparation method of the die-casting aluminum alloy comprises the following steps:

[0070] (1) Prepare the following raw materials: pure AL ingot, pure Mg ingot, Al-20% Si master alloy, Al-20% Fe master alloy, Al-10% Mn master alloy, aluminum-graphene master alloy, Al-10% Sr master alloy and A...

Embodiment 3

[0097] Embodiment 3 of the present invention provides a high-strength anodized and colorable die-casting aluminum alloy, which includes the following elements by weight percentage: 0.03wt%≤Si≤0.8wt%; 0.05wt%≤Fe≤2.0wt% %; 0.2wt%≤Mn≤3wt%; 0.2wt%≤Mg≤6.0wt%; 0.03wt%≤Graphene≤0.8wt%; 0.05wt%≤Sr≤2.0wt%; 0.05wt%≤Sc≤2.0wt% %; 0.03wt%≤Ti≤0.8wt%; 0.05wt%≤B≤2.0wt%; 0.05wt%≤Ce≤2.0wt%; the balance is Al.

[0098] For example, the first proportion can be: Si 0.03wt%; Fe 0.05wt%; Mn 0.2wt%; Mg0.2wt%; Graphene 0.03wt%; Sr 0.05wt%; Sc 0.05wt%; wt%; B 0.05wt%; Ce 0.05wt%; the balance is Al. The second proportion can be: Si 0.4wt%; Fe 1wt%; Mn 1wt%; Mg 2wt%; Graphene 0.2wt%; Sr 1wt%; Sc 1wt%; Ti 0.3wt%; %; the balance is Al. The third proportion can be: Si 0.8wt%; Fe 2.0wt%; Mn 3wt%; Mg 6.0wt%; Graphene 0.8wt%; Sr 2.0wt%; wt%; Ce 2.0wt%; the balance is Al.

[0099] The preparation method of the die-casting aluminum alloy is mostly the same as the preparation method of the above-mentioned Ex...

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Abstract

The invention discloses a high-strength die-casting aluminum alloy capable of being subjected to anodic oxidation coloring and a preparation method of the high-strength die-casting aluminum alloy. The die-casting aluminum alloy comprises the following elements in percentage by weight: 0.03 wt% <= Si <= 0.8 wt%; 0.05 wt% <= Fe <= 2.0 wt%; 0.2 wt% <= Mn <= 3 wt%; 0.2 wt% <= Mg <= 6.0 wt%; and the balance of Al. The preparation method is reasonable in design, the tensile strength of the prepared die-casting aluminum alloy is high and can reach 255 MPa, the die-casting performance is good, the die-casting aluminum alloy is universal for existing conventional dies, the film-forming property is good, subsequent coloring treatment is facilitated, and the mass production performance is high.

Description

technical field [0001] The invention relates to the technical field of die-casting aluminum alloys, in particular to a high-strength anodic oxidation-colorable die-casting aluminum alloy and a preparation method thereof. Background technique [0002] Die-casting aluminum alloys are often required to have better fluidity, so the existing die-casting aluminum alloys are mainly high-silicon aluminum alloys. However, although the existing aluminum alloys such as ADC12 have good die-casting properties, they have poor anodic film-forming properties and are not easy to be colored, so they are not suitable for use as product appearance parts. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned defects in the prior art, and provide a high-strength anodized and colorable die-casting aluminum alloy and a preparation method thereof. [0004] In order to achieve the above object, the first aspect of the present invention provides a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/08C22C1/03C22C1/06
CPCC22C21/00C22C21/08C22C1/03C22C1/026C22C1/06
Inventor 李华叶青
Owner 上海澜唐实业有限公司