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High-magnesium aluminum alloy material capable of being anodized and preparation method of high-magnesium aluminum alloy material

A high-magnesium aluminum alloy and anodic oxidation technology, which is applied in metal processing equipment, manufacturing tools, casting equipment, etc., can solve the problems of poor material formability, low strength, and low material strength, and achieve toughness, high elongation, and strength. high effect

Pending Publication Date: 2022-03-29
DALISHEN ALUMINUM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The exterior materials used in domestic notebook products are low-strength 5-series materials or 6061T6. The main alloy is 5052 or 5252 alloy, which has a good anode effect, but the disadvantage is that the material strength is low. 255Mpa, yield strength: 155-175Mpa
The 6061T6 material has disadvantages such as poor formability, easy cracking, and unevenness after heat treatment. The advantage is that the anodizing effect is good; in the 3C field, products are required to be lightweight, the product thickness is thinner, and the appearance quality is not reduced. In order to meet market demand And the lightweight development of products, we need to find a new aluminum alloy material that can replace stainless steel. While meeting the strength requirements, the surface can meet the anodic oxidation coloring requirements, high strength, and formable new aluminum alloy materials
[0004] The document number CN 111235442 A discloses an anodic oxidizable die-casting aluminum alloy for thin-walled products. By effectively adjusting the mass percentage of each element in the aluminum alloy, the synergistic effect of Ti element and Ni element and other components is used. Achieve high strength, good fluidity, non-stick mold effect, retain good casting performance and mechanical properties, but there is no significant improvement in light weight, product thickness and its surface can meet the requirements of anodic oxidation coloring

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  • High-magnesium aluminum alloy material capable of being anodized and preparation method of high-magnesium aluminum alloy material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The technical solution of this embodiment is as follows: This embodiment provides a high-magnesium aluminum alloy material that can be anodized, and its chemical composition includes: Si0.08%, Fe0.12%, Cu: 0.1%, Mn: 0.2%, Mg: 5.5%, Cr0.05%, Zn0.1%, Ti: 0.01%, Na0.0001%, Be: 0.003%, and the balance is Al.

[0028] The preparation method of this kind of high-magnesium aluminum alloy material that can be anodized specifically comprises the following steps:

[0029] (1) Ingredients: The following weight percentage materials are used for alloy proportioning, namely Si0.08%, Fe0.12%, Cu:0.1%, Mn:0.2%, Mg:5.5%, Cr0.05%, Zn0.1 %, Ti: 0.01%, Na0.0001%, Be: 0.003%, and the balance is AL;

[0030] (2) Smelting: After adding primary aluminum ingots with a purity of 99.9%, heat up and smelt. The melting temperature is 750°C. After melting the aluminum ingots, add manganese agent, chromium agent and magnesium ingots successively, and then add 18ppm of intermediate alloy AL-Be and st...

Embodiment 2

[0046] Embodiment 2: The difference between embodiment 2 and embodiment 1 is that the proportion of chemical components is different, and in the preparation process, the parameters of each step are different, and the specific operations are as follows:

[0047] (1) Ingredients: The following weight percentage materials are used for alloy proportioning, namely Si0.05%, Fe0.1%, Cu:0.03%, Mn:0.1%, Mg:5.2%, Cr0.03%, Zn0.05 %, Ti: 0.005%, Na0.0001%, Be: 0.001%, and the balance is AL;

[0048] (2) Smelting: After adding primary aluminum ingots with a purity of 99.9%, heat up and smelt. The melting temperature is 720°C. After melting the aluminum ingots, add manganese agent, chromium agent and magnesium ingots successively, and then add 15ppm of intermediate alloy AL-Be and stir , stirred for 20 minutes, refined again, and slag removed;

[0049] (3) Refining and degassing: After the composition is qualified, it is refined with nitrogen and chlorine mixed gas for the first time, the ...

Embodiment 3

[0059] The difference between embodiment 3 and embodiments 1 and 2 is that the proportion of chemical components is different, and in the preparation process, the parameters of each step are different. The specific operations are as follows:

[0060] (1) Ingredients: The following weight percentage materials are used for alloy proportioning, namely Si0.06%, Fe0.11%, Cu:0.15%, Mn: 0.25%, Mg: 6.0%, Cr0.04%, Zn0.07 %, Ti: 0.015%, Na0.0001%, Be: 0.005%, and the balance is AL;

[0061] (2) Smelting: After adding primary aluminum ingots with a purity of 99.9%, heat up and smelt. The melting temperature is 760°C. After melting the aluminum ingots, add manganese agent, chromium agent and magnesium ingots successively, and then add 20ppm of the master alloy AL-Be and stir , stirred for 30 minutes, refined again, and slag removed;

[0062] (3) Refining and degassing: After the composition is qualified, it is refined with nitrogen and chlorine mixed gas for the first time, and the propo...

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Abstract

The invention provides an anodizing high-magnesium aluminum alloy material and a preparation method thereof, the anodizing high-magnesium aluminum alloy material comprises the following chemical materials in percentage by weight: less than or equal to 0.08% of Si, less than or equal to 0.12% of Fe, 0.03-0.15% of Cu, 0.1-0.25% of Mn, 5.2-6.0% of Mg, less than or equal to 0.05% of Cr, less than or equal to 0.1% of Zn, 0.005-0.015% of Ti, less than or equal to 0.0001% of Na, 0.001-0.005% of Be and the balance of AL. A finished product made according to the alloy components can meet the requirements of terminal clients, and has the characteristics of good anode effect, no material lines, light weight, high strength and good formability.

Description

technical field [0001] The invention belongs to the technical field of high-magnesium aluminum alloy materials, and in particular relates to an anodizable high-magnesium aluminum alloy material and a preparation method thereof. Background technique [0002] With the development of electronic 3C products, 3C products are more pursuing light weight and aesthetics. This requires that while the unit weight is reduced, the strength of the product shell and the aesthetics of the appearance are also improved. Aluminum alloy materials have the advantages of small specific gravity, good corrosion resistance, good processing and forming performance, high thermal conductivity, and good anodic oxidation coloring effect. [0003] The exterior materials used in domestic notebook products are low-strength 5-series materials or 6061T6. The main alloy is 5052 or 5252 alloy, which has a good anode effect, but the disadvantage is that the material strength is low. 255Mpa, yield strength: 155...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C21/08C22C1/03C22F1/047B22D43/00B23P15/00
CPCC22C21/06C22C21/08C22C1/026C22F1/047C22C1/03B22D43/004B23P15/00
Inventor 曹旷曹洪正
Owner DALISHEN ALUMINUM