Aluminum alloy with high quality oxidation effect and high strength and preparation method thereof

An aluminum alloy and aluminum alloy ingot casting technology is applied in the field of high-quality oxidation effect and high-strength aluminum alloy and its preparation, and can solve the problems of streaks, low aluminum alloy strength, and insufficient aluminum alloy strength.

Inactive Publication Date: 2019-10-25
GUANGDONG HOSHION IND ALUMINUM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of high-quality oxidation effect high-strength aluminum alloy and its preparation method, to solve the problem raised in the above-mentioned background technology: 7 series aluminum alloy anodic oxidation film a

Method used

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  • Aluminum alloy with high quality oxidation effect and high strength and preparation method thereof
  • Aluminum alloy with high quality oxidation effect and high strength and preparation method thereof
  • Aluminum alloy with high quality oxidation effect and high strength and preparation method thereof

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Embodiment 1

[0051] The composition of aluminum alloy: Si is 0.55%, Mg is 2.7%, Fe is 0.12%, Cu is 0.65%, Mn is 0.12%, Cr is 0.0080%, Ti is 0.01%, other single impurity elements are ≤0.05, and the balance is Al.

[0052] A method for manufacturing a high-quality oxidation effect high-strength aluminum alloy, comprising the following steps:

[0053] (1) Prepare materials according to the above mass percentages, wherein aluminum and magnesium adopt aluminum ingots and magnesium ingots;

[0054] (2) Heating the aluminum ingot to 760°C for melting, then adding magnesium ingot and intermediate alloy, stirring and melting to obtain aluminum alloy liquid I;

[0055] (3) Adding a refining agent to the aluminum alloy liquid I, and then introducing argon gas to refine the aluminum alloy liquid, removing slag, and standing to obtain aluminum alloy liquid II;

[0056] (4) putting the aluminum alloy liquid II into the launder, and then adding a grain refiner for on-line grain refinement treatment to ...

Embodiment 2

[0062] The composition of aluminum alloy: Si is 0.6%, Mg is 2.5%, Fe is 0.15%, Cu is 0.55%, Mn is 0.08%, Cr is 0.0080%, Ti is 0.01%, other single impurity elements are ≤0.05, and the balance is Al.

[0063] A method for manufacturing a high-quality oxidation effect high-strength aluminum alloy, comprising the following steps:

[0064] (1) Prepare materials according to the above mass percentages, wherein aluminum and magnesium adopt aluminum ingots and magnesium ingots;

[0065] (2) Heating the aluminum ingot to 760°C for melting, then adding magnesium ingot and intermediate alloy, stirring and melting to obtain aluminum alloy liquid I;

[0066] (3) Adding a refining agent to the aluminum alloy liquid I, and then introducing argon gas to refine the aluminum alloy liquid, removing slag, and standing to obtain aluminum alloy liquid II;

[0067] (4) putting the aluminum alloy liquid II into the launder, and then adding a grain refiner for on-line grain refinement treatment to o...

Embodiment 3

[0073] The composition of aluminum alloy: Si is 0.5%, Mg is 2.5%, Fe is 0.18%, Cu is 0.75%, Mn is 0.18%, Cr is 0.0080%, Ti is 0.0050%, other single impurity elements are ≤0.05, and the balance is Al.

[0074] A method for manufacturing a high-quality oxidation effect high-strength aluminum alloy, comprising the following steps:

[0075] (1) Prepare materials according to the above mass percentages, wherein aluminum and magnesium adopt aluminum ingots and magnesium ingots;

[0076] (2) Heating the aluminum ingot to 760°C for melting, then adding magnesium ingot and intermediate alloy, stirring and melting to obtain aluminum alloy liquid I;

[0077] (3) Adding a refining agent to the aluminum alloy liquid I, and then introducing argon gas to refine the aluminum alloy liquid, removing slag, and standing to obtain aluminum alloy liquid II;

[0078] (4) putting the aluminum alloy liquid II into the launder, and then adding a grain refiner for on-line grain refinement treatment to...

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Abstract

The invention relates to the technical field of nonferrous metals, and discloses an aluminum alloy with a high quality oxidation effect and high strength. The aluminum alloy comprises the following components of, in percentage by mass, 0.50%-0.60% of Si, 2.2%-2.8% of Mg, less than or equal to 0.20% of Fe, 0.55%-0.75% of Cu, less than or equal to 0.01% of Cr, less than or equal to 0.30% of Mn, lessthan or equal to 0.03% of Ti, and the balance Al. The invention further discloses a preparation method of the aluminum alloy, the preparation method comprises the steps that an aluminum ingot is heated, and then a magnesium ingot and an intermediate alloy are added to obtain aluminum alloy melt I; a refining agent is added into the aluminum alloy melt I, and argon is introduced to refine the aluminum alloy melt I to obtain aluminum alloy melt II; the aluminum alloy melt II is put into a flow groove, and then a grain refiner is added to carry out on-line grain refining treatment to obtain aluminum alloy melt III; the aluminum alloy melt III is cast under the condition of 680 - 730 DEG C to obtain an aluminum alloy ingot A; segmented multi-stage homogenization treatment is carried out on the aluminum alloy ingot A to obtain an extruded aluminum alloy C; and artificial aging treatment is carried out on the aluminum alloy C. The aluminum alloy has the advantages that the yield strength islarge and reaches 400 MPa or above, the binding force of an oxidation film is strong, and the oxidation effect is in high quality.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metals, in particular to an aluminum alloy with high-quality oxidation effect and high strength and a preparation method thereof. Background technique [0002] Aluminum alloy is an alloy composed of aluminum and other elements. It has the advantages of small specific gravity, high strength, corrosion resistance, good electrical and thermal conductivity, environmental protection and recyclability, and has become one of the most widely used materials in daily life. [0003] In recent years, 3C products have shown explosive growth. Slim structure, smart design, high appearance and high strength are the persistent pursuit of 3C products. In the computer and communication industries, with the application of wireless charging and 5G technology, aluminum alloys are widely used as frames or backplanes for structural functions. For example, the middle frame of a mobile phone, with the application of w...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22C1/06C22F1/047
CPCC22C1/026C22C1/03C22C1/06C22C21/08C22F1/002C22F1/047
Inventor 罗杰丁小理罗跃鹏刘经发刘志成
Owner GUANGDONG HOSHION IND ALUMINUM CO LTD
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