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Aluminum-magnesium-silicon series aluminum alloy material with middle and high intensity

An aluminum-magnesium-silicon technology, which is applied in the field of aluminum-magnesium-silicon series aluminum alloy materials, can solve the problems of difficult forming, difficult processing, and poor ductility of 7 series alloys, and achieves less investment in casting equipment, less damage, and casting performance. excellent effect

Active Publication Date: 2012-07-04
SHANGHAI UNISON ALUMINUM PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Automobile bumpers put forward higher requirements on the strength, shock absorption, and compression deformation of steam materials. Generally, the main beam material of bumpers currently used is 7-series high-strength aluminum alloy, but 7-series alloys are difficult to form and process. Poor performance, resulting in a large amount of waste during processing

Method used

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  • Aluminum-magnesium-silicon series aluminum alloy material with middle and high intensity

Examples

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Effect test

Embodiment 1

[0020] Example 1, the present invention provides a medium-high-strength aluminum-magnesium-silicon-based aluminum alloy material, the components of which contain the following elements in mass percent: silicon 0.72; iron 0.3; copper 0.35; magnesium 1.05; manganese 0.13; zinc 0.047; titanium 0.034; chromium 0.099; the rest is aluminum.

Embodiment 2

[0021] Example 2, the present invention provides a medium-high-strength aluminum-magnesium-silicon-based aluminum alloy material, the components of which contain the following elements in mass percent: silicon 0.71; iron 0.31; copper 0.32; magnesium 1.02; manganese 0.13; zinc 0.028; titanium 0.035; chromium 0.12; the rest is aluminum.

Embodiment 3

[0022] Example 3, the present invention provides a medium-high-strength aluminum-magnesium-silicon-based aluminum alloy material, the components of which contain the following elements in mass percent: silicon 0.50; iron 0.32; copper 0.33; magnesium 1.35; manganese 0.12; zinc 0.035; titanium 0.040; chromium 0.11; the rest is aluminum.

[0023] The melting and casting process of the medium-high strength aluminum-magnesium-silicon-based aluminum alloy material comprises the following steps:

[0024] ⑴According to the above-mentioned component ratio, the ingredients except magnesium element are smelted in the furnace, and the temperature is 730-760 0 C, the time is 3h ~ 3.5h;

[0025] (2) According to the proportion of components, add magnesium element into the melting furnace, stir, and continue smelting for 0.5h, while removing slag;

[0026] ⑶ refining, the temperature is 720 ~ 750 0 C, the time is 15min, and the slag is removed at the same time;

[0027] ⑷Casting: use tit...

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Abstract

The invention discloses an aluminum-magnesium-silicon series aluminum alloy material with middle and high intensity, comprising the following elements in percentage by weight: 0.50-1.0 percent of silicon, 0.20-0.40 percent of iron, 0.25-0.50 percent of copper, 0.9-1.4 percent of magnesium, 0.05-0.15 percent of manganese, not more than 0.10 percent of zinc, not more than 0.05 percent of titanium, 0.05-0.12 percent of chromium and the balance of aluminum. A process thereof comprises the following steps of burdening, furnace charging, slag skimming, magnesium adding, stirring, sampling, composition adjusting, refining, slag skimming, refining, standing and casting. The invention has the advantages of high intensity, high tenacity, high corrosion resistance and good shock absorption performance.

Description

technical field [0001] The invention relates to an aluminum-magnesium-silicon-based aluminum alloy material, in particular to a medium-high-strength aluminum-magnesium-silicon-based aluminum alloy material used for automobile bumpers. Background technique [0002] With the increasing demand for lightweight automobiles, aluminum alloys, as a lightweight material, are increasingly being used in various automotive parts. As a car bumper, it is closely related to car safety and personal safety. Automobile bumpers put forward higher requirements on the strength, shock absorption, and compression deformation of steam materials. Generally, the main beam material of bumpers currently used is 7-series high-strength aluminum alloy, but 7-series alloys are difficult to form and process. Poor performance, resulting in a large number of waste products in the process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08
Inventor 罗世兵王晓华
Owner SHANGHAI UNISON ALUMINUM PRODS
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