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Aluminum alloy for automobile anti-collision beam and preparation method thereof

An anti-collision beam and aluminum alloy technology, which is applied in the field of aluminum alloys, can solve the problems of difficulty in effectively meeting the use requirements of anti-collision beams, large fluctuations in elongation, etc., and achieves the effects of good product toughness and stable internal organization.

Inactive Publication Date: 2022-02-11
GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing 6082 materials have large elongation fluctuations, some even less than 8%, which is difficult to effectively meet the needs of anti-collision beams

Method used

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  • Aluminum alloy for automobile anti-collision beam and preparation method thereof
  • Aluminum alloy for automobile anti-collision beam and preparation method thereof

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preparation example Construction

[0033] Correspondingly, in order to effectively improve the various performances of the aluminum alloy used in the automobile anti-collision beam in the present invention, it is also necessary to combine the preparation method. Specifically, the preparation method of the aluminum alloy used in the automobile anti-collision beam in the present invention includes the following steps :

[0034] S1: Prepare various raw materials according to the proportion for later use;

[0035] Specifically, the raw materials in the present invention include but are not limited to: returned materials, pure aluminum ingots, Al-20%Mn master alloys, Al-20%Cr master alloys, Al-50%Cu master alloys, high-purity magnesium, high-purity silicon, Aluminum titanium boron wire (it is enough to control the content of Fe in each raw material, generally there is no need to specifically add Fe element, unless it is necessary to add Fe appropriately).

[0036] S2: Mix and cast the raw materials to obtain alumin...

Embodiment 1

[0057] The present embodiment provides a kind of aluminum alloy that is used for automobile anti-collision beam, and its formula is:

[0058] Si 0.73%, Mg 0.95%, Cu 0.01%, Mn 0.55%, Fe 0.33%, Zn 0.05%, Cr 0.09%, Ti 0.06%, unavoidable impurities 0.15%, and the balance is Al.

[0059] Its preparation method is:

[0060] (1) Prepare various raw materials according to the ratio for subsequent use;

[0061] (2) mixing and casting the raw materials to obtain cast rods;

[0062] Among them, the melting temperature is 740°C, and the casting speed is 80m / min;

[0063] (3) Homogenize the cast rod; wherein, the homogenization temperature is 550°C, and the time is 8h; after homogenization, it is cooled by strong wind + water mist, and the cooling rate is 280°C / h;

[0064] (4) Extrude the homogenized cast rod to obtain a rough billet; wherein, the temperature of the cast rod before extrusion is 480°C, the temperature of the rough billet at the extrusion outlet is 540°C, and the extrusio...

Embodiment 2

[0068] The present embodiment provides a kind of aluminum alloy that is used for automobile anti-collision beam, and its formula is:

[0069] Si 0.88%, Mg 0.73%, Cu 0.1%, Mn 0.53%, Fe 0.25%, Zn 0.03%, Cr 0.05%, Ti 0.05%, unavoidable impurities 0.15%, and the balance is Al.

[0070] Its preparation method is:

[0071] (1) Prepare various raw materials according to the ratio for subsequent use;

[0072] (2) mixing and casting the raw materials to obtain cast rods;

[0073] Among them, the melting temperature is 740°C, and the casting speed is 75m / min;

[0074] (3) Homogenize the cast rod; wherein, the homogenization temperature is 540°C, and the time is 10h; after homogenization, it is cooled by strong wind + water mist, and the cooling rate is 260°C / h;

[0075] (4) Extrude the homogenized cast rod to obtain a rough billet; wherein, the temperature of the cast rod before extrusion is 490°C, the temperature of the rough billet at the extrusion outlet is 550°C, and the extrusio...

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Abstract

The invention discloses an aluminum alloy for an automobile anti-collision beam, which mainly comprises the following components in percentage by mass: 0.7-0.9% of Si, 0.7-0.9% of Mg, less than or equal to 0.1% of Cu, 0.5-0.7% of Mn, less than or equal to 0.35% of Fe, less than or equal to 0.1% of Zn, less than or equal to 0.1% of Cr, less than or equal to 0.1% of Ti and the balance of Al and inevitable impurities. The content of the inevitable impurities is less than or equal to 0.15%. Correspondingly, the invention further discloses a preparation method of the aluminum alloy for the automobile anti-collision beam. By implementing the method, the aluminum alloy with high strength, strong toughness and stable internal structure can be obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy used for automobile anti-collision beams and a preparation method thereof. Background technique [0002] As automobile manufacturing enters the development track of lightweight, the proportion of aluminum alloys used in automobile products is increasing due to its excellent characteristics such as light weight, high specific strength, easy forming and easy processing. Among them, the automobile anti-collision beam is a device used to reduce the absorption of collision energy when the vehicle is collided, and is composed of a beam, an energy-absorbing box, and a mounting plate connected to the automobile. When a low-speed collision occurs, the anti-collision beam can effectively absorb the collision energy, minimize the damage to the vehicle body caused by the impact force, and reduce the injury to personnel. [0003] Aluminum anti-collision beams are ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/02C22F1/043C22F1/047
CPCC22C21/08C22C21/02C22C1/026C22F1/047C22F1/043
Inventor 邹尚锋严兰芳李永超陈俭陈力
Owner GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP