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A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy and its preparation process

A preparation process and technology for aluminum alloys, which are applied in the field of low-alloyed, easy-to-extrude and easy-to-recycle 6-series aluminum alloys, can solve the problems of increased selection cost of recycled aluminum, difficulty in blending alloying elements, and increased carbon emissions in the industrial chain, so as to reduce degradation risk, yield strength improvement, and tensile strength improvement effect

Active Publication Date: 2022-04-08
FOSHAN AOMEI ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the most widely used low-alloyed 6063 alloy generally has an aluminum content of less than 99%, and different manufacturers have different requirements, and there are large differences in the ratio, and the lowest aluminum content is even less than 98.5%.
This makes it difficult to adjust the alloying elements in the process of recycling and remelting, and because there are too many alloying elements, it can only be used in the production of 6-series alloy aluminum rods, and it may cause additional impurities when mixed into other series of aluminum alloys.
In addition, it is difficult to accurately distinguish the recycled aluminum after use due to the limited equipment in the market. As a result, the difference in the composition of recycled aluminum can only increase the cost of selection, or simply downgrade it for use, which will lead to a passive increase in carbon emissions in the industrial chain.

Method used

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  • A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy and its preparation process
  • A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy is prepared through the following steps:

[0038] 1) Adjust the alloy composition and prepare aluminum alloy raw materials according to the following weight percentages: Mg 0.25%, Si 0.27%, Mg / Si=0.93, Fe: ≤0.10%, Cu ≤0.001%, Mn ≤0.001%, Cr ≤0.001%, Zn ≤0.01%, Ti 0.01%, B0.004%, V≤0.005%, single impurity ≤0.005%, total impurity ≤0.01%, Al 99.36%.

[0039] 2) For casting aluminum alloy ingots, add the prepared aluminum alloy raw materials into the melting furnace to melt into molten aluminum, and stir them evenly with electromagnetic stirring equipment, and use refining agents for refining and degassing to ensure that they stand still for more than 30 minutes to ensure The coarse compound formed is fully precipitated, and then the impurities in the molten aluminum are filtered through a ceramic filter plate, and then the molten aluminum is cast into an aluminum alloy ingot.

[0040] 3) Homogenization treatme...

Embodiment 2

[0044] A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy is prepared through the following steps:

[0045] 1) Adjust the alloy composition and prepare the aluminum alloy raw materials according to the following weight percentages: Mg 0.25%, Si 0.29%, Mg / Si=0.86, Fe: ≤0.10%, Cu ≤0.001%, Mn ≤0.001%, Cr ≤0.001%, Zn ≤0.01%, Ti 0.015%, B0.005%, V≤0.005%, single impurity ≤0.005%, total impurity ≤0.01%, Al 99.34%.

[0046] 2) For casting aluminum alloy ingots, add the prepared aluminum alloy raw materials into the melting furnace to melt into molten aluminum, and stir them evenly with electromagnetic stirring equipment, and use refining agents for refining and degassing to ensure that they stand still for more than 30 minutes to ensure The coarse compound formed is fully precipitated, and then the impurities in the molten aluminum are filtered through a ceramic filter plate, and then the molten aluminum is cast into an aluminum alloy ingot.

[0047] 3) Homogenization tr...

Embodiment 3

[0051] A low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy is prepared through the following steps:

[0052] 1) Adjust the alloy composition and prepare the aluminum alloy raw materials according to the following weight percentages: Mg 0.26%, Si 0.27%, Mg / Si=0.96, Fe: ≤0.10%, Cu ≤0.001%, Mn ≤0.001%, Cr ≤0.001%, Zn ≤0.01%, Ti 0.013%, B0.003%, V≤0.005%, single impurity ≤0.005%, total impurity ≤0.01%, Al 99.38%.

[0053] 2) For casting aluminum alloy ingots, add the prepared aluminum alloy raw materials into the melting furnace to melt into molten aluminum, and stir them evenly with electromagnetic stirring equipment, and use refining agents for refining and degassing to ensure that they stand still for more than 30 minutes to ensure The coarse compound formed is fully precipitated, and then the impurities in the molten aluminum are filtered through a ceramic filter plate, and then the molten aluminum is cast into an aluminum alloy ingot.

[0054] 3) Homogenization tr...

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Abstract

The invention provides a low-alloyed, easy-to-extrude, easy-to-recycle aluminum alloy and its preparation process. By optimizing the composition and heat treatment process of the 6-series aluminum alloy, a low-alloyed aluminum alloy with a lower alloying degree is developed. A certain strength aluminum alloy. This alloy can not only meet the requirements of general 6-series aluminum alloys, but also is more convenient for recycling and remelting after consumption, reducing the selection of waste materials, reducing the risk of downgrading recycled aluminum rods, and effectively limiting the carbon emissions of the industrial chain. Contribute to carbon neutrality. According to actual production verification, compared with the 1-series aluminum alloy with the same aluminum content, the tensile strength of the low-alloyed, easy-to-extrude and easy-to-recycle 6-series aluminum alloy provided by the present invention is increased by more than 1.5 times, and the yield strength is increased by more than 3 times .

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing and manufacturing, in particular to a 6-series aluminum alloy that is low-alloyed, easy to extrude and easy to recycle, including alloy composition, heat treatment production process, and extrusion process. Background technique [0002] Compared with other types of alloys, aluminum alloys have the following advantages: 1) Light weight (1 / 3 of steel), no rust and no corrosion, and excellent recyclability. 2) Aluminum can be strengthened through work hardening or heat treatment to achieve a high strength-to-weight ratio. 3) Aluminum alloy has good processing performance and is suitable for different production processes such as casting, extrusion, stamping, forging and machining. 4) Aluminum alloy can also be strengthened to different degrees by adding different alloying elements and through heat treatment process. 5) The surface of the aluminum alloy is easy to form a dense oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C21/02C22C21/08C22F1/043C22F1/05
CPCC22C1/026C22C21/02C22C21/08C22F1/043C22F1/05
Inventor 周晶哲刘才兴李洪刚向耀
Owner FOSHAN AOMEI ALUMINUM IND
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