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High-strength and high-plasticity hollow aluminum profile and preparation method thereof

A high plasticity, aluminum profile technology, applied in anodizing, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of not fully meeting the performance requirements of plates for alternate transportation, insufficient plasticity, high stress corrosion sensitivity, etc. Avoid coarse precipitates, increase adhesion, and have excellent mechanical properties

Inactive Publication Date: 2019-11-15
ANHUI XIN FA ALUMINUM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a high-strength and high-plasticity hollow aluminum profile and its preparation method, which solves the problems of insufficient plasticity and stress corrosion in the hollow aluminum profiles currently on the market which have relatively high strength. The problem of high sensitivity, the problem that it cannot fully meet the performance requirements of the plates used for alternate transportation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-strength and high-plasticity hollow aluminum profile, including the following raw materials (wt%) in parts by weight: Mg: 2.0, Cu: 2.0, Si: 0.4, Gu: 0.4, As: 0.8, Ti: 0.2, Mn: 0.4 , Fe: 1.0, Cr: 0.4, Zn: 0.4, Li: 0.6, the balance aluminum and unavoidable impurities.

[0032] A high-strength and high-plasticity hollow aluminum profile and a preparation method thereof, including the following steps:

[0033] S1. Weigh each raw material according to the weight ratio;

[0034] S2. Put the aluminum into the melting furnace and heat it to 700℃ in a nitrogen-filled environment to melt the aluminum into aluminum melt. Then use nitrogen gas carrier to add Mg, Cu, Si, Zn into the aluminum melt, and then Pass in a refining agent that accounts for 0.5% of the weight of aluminum for refining and slagging, and keep stirring for 6 minutes at a constant temperature to prepare a mixed melt;

[0035] S3. Send the mixed melt obtained in step S2 into an intermediate frequency furnace, rais...

Embodiment 2

[0045] A high-strength and high-plasticity hollow aluminum profile, including the following parts by weight of raw materials (wt%): Mg: 3.0, Cu: 3.0, Si: 0.6, Gu: 0.8, As: 0.9, Ti: 0.4, Mn: 0.8 , Fe: 2.0, Cr: 0.5, Zn: 0.5, Li: 0.7, the balance aluminum and inevitable impurities.

[0046] A high-strength and high-plasticity hollow aluminum profile and a preparation method thereof, including the following steps:

[0047] S1. Weigh each raw material according to the weight ratio;

[0048] S2. Put aluminum into the melting furnace and heat it to 750℃ in a nitrogen-filled environment to melt the aluminum into aluminum melt. Then use nitrogen gas carrier to add Mg, Cu, Si, Zn to the aluminum melt, and then Refining agent, which accounts for 0.75% of aluminum weight, is passed in for refining and slagging, and stirring is maintained at a constant temperature for 8 minutes to prepare a mixed melt;

[0049] S3. Send the mixed melt obtained in step S2 into an intermediate frequency furnace, ra...

Embodiment 3

[0059] A method for preparing a high-strength and high-plasticity hollow aluminum profile, comprising the following raw materials (wt%) in parts by weight: Mg: 4.0, Cu: 4.0, Si: 0.8, Gu: 1.0, As: 1.0, Ti: 0.6, Mn: 1.0, Fe: 3.0, Cr: 0.6, Zn: 0.6, Li: 0.8, the balance aluminum and inevitable impurities.

[0060] A high-strength and high-plasticity hollow aluminum profile and a preparation method thereof, including the following steps:

[0061] S1. Weigh each raw material according to the weight ratio;

[0062] S2. Put the aluminum into the melting furnace, heat it to 800℃ in a nitrogen-filled environment to melt the aluminum into aluminum melt, then use nitrogen gas carrier to add Mg, Cu, Si, Zn into the aluminum melt, and then Refining agent, which accounts for 1% of aluminum weight, is passed in for refining and slagging, and stirring is maintained at a constant temperature for 10 minutes to obtain a mixed melt;

[0063] S3. Send the mixed melt obtained in step S2 into an intermediat...

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Abstract

The invention discloses a high-strength and high-plasticity hollow aluminum profile and a preparation method thereof, and belongs to the field of aluminum profile preparation. The high-strength and high-plasticity hollow aluminum profile comprises the following raw materials of, in percentage by weight (wt%), 2.0-4.0 of Mg, 2.0-4.0 of Cu, 0.4-0.8 of Si, 0.4-1.0 of Gu, 0.8-1.0 of As, 0.2-0.6 of Ti,0.4-1.0 of Mn, 1.0-3.0 of Fe, 0.4-0.6 of Cr, 0.4-0.6 of Zn, 0.6-0.8 of Li, and the balance aluminum and inevitable impurities. By controlling the content of elements in aluminum alloy components, strengthening phases such as Al2Cu, Al2CuMg, Mg2Si and MgZn2 are formed in an aluminum alloy, the strengthening phases act synergistically, so that the effects of deoxidizing and refining grains are achieved, the obvious strengthening effect on the aluminum profile is achieved, the cracking sensitivity of a material is effectively reduced, the mechanical properties such as plasticity, toughness and fatigue resistance of the aluminum profile and the good machining performance are improved, and the performance requirement of the aluminum profile for alternate transportation can be met.

Description

Technical field [0001] The invention relates to the technical field of aluminum profile preparation, in particular to a high-strength and high-plasticity hollow aluminum profile and a preparation method thereof. Background technique [0002] With the development of lightweight transportation, such as alternate transportation, ships, and airplanes, the application of aluminum alloy profiles in transportation vehicles is expanding. At present, aluminum alloy profiles for transportation vehicles are mainly large-size, hollow, and thin-walled aluminum alloys. Profiles, in order to improve the carrying capacity, safety and service life of transportation vehicles, aluminum profiles are required to have higher comprehensive performance. [0003] At present, the hollow aluminum profiles on the market have high strength, but there are still problems of insufficient plasticity and greater sensitivity to stress corrosion, which cannot yet fully meet the performance requirements of alternate t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22C1/06C22F1/04C25D11/08C25D13/04C25D11/16
CPCC22C1/026C22C1/06C22C21/00C22F1/04C25D11/08C25D11/16C25D13/04
Inventor 赵欣泰唐开健李杰王超傅凡一贡玉楼
Owner ANHUI XIN FA ALUMINUM PROD
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