Aluminum alloy and preparation method thereof

A technology for aluminum alloy and aluminum alloy ingot, which is applied in the field of material processing and can solve the problems of low quenching sensitivity and high extrusion performance.

Inactive Publication Date: 2019-12-20
广东和胜新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide an aluminum alloy, aiming to solve the problem that the existing aluminum alloys cannot ensure h

Method used

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  • Aluminum alloy and preparation method thereof
  • Aluminum alloy and preparation method thereof
  • Aluminum alloy and preparation method thereof

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preparation example Construction

[0031] The embodiment of the present invention also provides a method for preparing an aluminum alloy, which specifically includes the following steps:

[0032] Prepare raw materials;

[0033] melting the raw materials to obtain crude aluminum alloy liquid;

[0034] Adding a refining agent to the aluminum alloy crude liquid, refining, removing slag, and standing still the aluminum alloy crude liquid in an inert gas environment to obtain an aluminum alloy refining liquid;

[0035] adding a grain refiner to the aluminum alloy refining liquid to perform grain refinement treatment to obtain a grain refined aluminum alloy liquid;

[0036] Casting the aluminum alloy liquid after the grain refinement, to obtain an aluminum alloy ingot, and cooling to normal temperature;

[0037] The aluminum alloy ingot is heated to 430°C to 460°C at a heating rate of 2°C to 7°C / min and kept for 3 to 5 hours, then heated to 560°C to 575°C and kept for 6 to 24 hours, and then heated for 5 ℃~10℃ / min...

Embodiment 1

[0052] According to the following mass percentages: 0.62% silicon, 0.56% magnesium, 0.15% copper, 0.25% manganese, 0.1% chromium, 0.03% vanadium, 0.05% iron, 0.01% titanium, and the balance is aluminum for material preparation, wherein the aluminum is from the market Directly purchased aluminum ingots with a purity of ≥99.8% (provided by Shenzhen Guangshenfa Metal Co., Ltd.), and magnesium ingots purchased directly from the market with a purity of ≥99.9 (provided by Shenzhen Datang Metal Materials Co., Ltd. ), the master alloys of the remaining raw material components are also directly purchased from the market (provided by the manufacturer: Xuzhou Huasheng Aluminum Co., Ltd.).

[0053] After the aluminum ingot is melted at a temperature of 740°C, magnesium ingots and other intermediate alloys are added, stirred and melted to obtain a crude aluminum alloy solution.

[0054] After adding the refining agent directly purchased on the market to the crude aluminum alloy liquid acco...

Embodiment 2

[0065] According to the following mass percentages: 0.78% silicon, 0.70% magnesium, 0.2% copper, 0.38% manganese, 0.18% chromium, 0.08% vanadium, 0.20% iron, 0.03% titanium, and the balance is aluminum for material preparation, wherein the aluminum is from the market Directly purchased aluminum ingots with a purity of ≥99.8% (provided by Shenzhen Guangshenfa Metal Co., Ltd.), and magnesium ingots purchased directly from the market with a purity of ≥99.9 (provided by Shenzhen Datang Metal Materials Co., Ltd. ), the master alloys of the remaining raw material components are also directly purchased from the market (provided by the manufacturer: Xuzhou Huasheng Aluminum Co., Ltd.).

[0066] After the aluminum ingot is melted at a temperature of 780°C, magnesium ingots and other intermediate alloys are added, stirred and melted to obtain a crude aluminum alloy liquid.

[0067] After adding the refining agent directly purchased on the market to the crude aluminum alloy liquid accord...

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Abstract

The invention is suitable for the field of material processing, and provides an aluminum alloy and a preparation method thereof. The aluminum alloy comprises the following components in percentage bymass: 0.62-0.78% of silicon, 0.56-0.70% of magnesium, 0.15-0.20% of copper, 0.25-0.38% of manganese, 0.10-0.18% of chromium, 0.03-0.08% of vanadium, iron not more than 0.20% and more than 0, titaniumnot more than 0.03% and more than 0, and the balance of aluminum. In the aluminum alloy, through limiting of the contents of silicon, magnesium and copper fed elements, the product strength is improved when the extrusion performance of the aluminum alloy is not reduced; and meanwhile, through feeding of such elements as manganese, chromium and vanadium and cooperation with subsequent process treatment, dispersion separation mass points can be generated to achieve an effect of inhibiting recrystallization in the extrusion process, that is, the product strength and ductility are further improved, and prepared products achieve higher strength, ductility, stress corrosion resistance and extrusion performance.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to an aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is a very common material that is widely used in various industries. In order to meet the needs of different industries, it is usually necessary to add a certain amount of alloying elements such as silicon, magnesium, titanium, copper, chromium, etc. to pure aluminum, and adding different types of alloying elements or adding different dosages of alloying elements will affect the final Properties of the prepared aluminum alloys. The 6-series aluminum alloy is an aluminum alloy with magnesium and silicon as the main additive elements. It is a heat-treated alloy that can be strengthened. It has good corrosion resistance, oxidation resistance and extrudability. It is widely used, from various From hardware parts to aluminum alloy doors and windows to airplanes an...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/08C22C1/03C22C1/06C22F1/05
CPCC22C1/026C22C1/03C22C1/06C22C21/02C22C21/08C22F1/05
Inventor 罗杰丁小理蔡名贵刘经发朱顺辉宾建存王子夜
Owner 广东和胜新能源科技有限公司
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