High-toughness extrusion casting aluminum alloy and preparation method thereof

A technology of squeeze casting and aluminum alloy, which is applied in the field of high strength and toughness squeeze casting aluminum alloy and its preparation, can solve the problems of waste of precious metal elements, etc., and achieve the effect of increasing use value and reducing production cost

Active Publication Date: 2019-09-10
广东工程职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the waste aluminum in my country is mainly used to regenerate cast aluminum alloys for some low-value-added hardware products. Metal elements such as silicon, magnesium, copper, zinc, manganese, and cobalt contained in waste aluminum have not been effectively utilized, resulting in Huge waste of many precious metal elements

Method used

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  • High-toughness extrusion casting aluminum alloy and preparation method thereof
  • High-toughness extrusion casting aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The composition and mass percentage of the raw materials used in this example of high strength and toughness squeeze casting aluminum alloy are: 75% 4xxx series aluminum alloy scrap, 15.1% 5xxx series aluminum alloy scrap, 4.3% 2xxx series aluminum alloy scrap, 2.6% 7xxx Aluminum alloy scrap, 2.5% 3xxx series aluminum alloy scrap, 0.2% aluminum zirconium boron master alloy, 0.1% aluminum antimony master alloy and 0.2% aluminum vanadium master alloy.

[0062] Among them, the chemical composition and mass percentage of each raw material are as follows:

[0063]The chemical composition and mass percentage of 4xxx series aluminum alloy scrap are: Si 8.51%, Mg 0.26%, Mn 0.37%, Fe≤0.6%, the balance is Al and other unavoidable impurity elements, and the individual content of other impurity elements is ≤0.1 %, total amount ≤0.5%;

[0064] The chemical composition and mass percentage of 5xxx series aluminum alloy scrap are: Mg 4.54%, Mn 0.59%, Co 0.28%, Fe ≤ 0.4%, the balance i...

Embodiment 2

[0079] The composition and mass percentage of the raw materials used for the high-strength extrusion-casting aluminum alloy in this example are: 78% 4xxx series aluminum alloy scrap, 15% 5xxx series aluminum alloy scrap, 3% 2xxx series aluminum alloy scrap, 2% 7xxx Aluminum alloy scrap, 1.3% 3xxx series aluminum alloy scrap, 0.4% aluminum zirconium boron master alloy, 0.2% aluminum antimony master alloy and 0.1% aluminum vanadium master alloy.

[0080] Among them, the chemical composition and mass percentage of each raw material are as follows:

[0081] The chemical composition and mass percentage of 4xxx series aluminum alloy scrap are: Si 8.01%, Mg 0.39%, Mn 0.24%, Fe ≤0.6%, the balance is Al and other unavoidable impurity elements, and the individual content of other impurity elements ≤0.1 %, total amount ≤0.5%;

[0082] The chemical composition and mass percentage of 5xxx series aluminum alloy scrap are: Mg 4.02%, Mn 0.95%, Co 0.30%, Fe ≤0.4%, the balance is Al and other ...

Embodiment 3

[0097] The composition and mass percentage of the raw materials used for the high-strength extrusion-casting aluminum alloy in this example are: 80% 4xxx series aluminum alloy scrap, 12% 5xxx series aluminum alloy scrap, 4% 2xxx series aluminum alloy scrap, 2% 7xxx Aluminum alloy scrap, 1.3% 3xxx series aluminum alloy scrap, 0.4% aluminum zirconium boron master alloy, 0.2% aluminum antimony master alloy and 0.1% aluminum vanadium master alloy.

[0098] Among them, the chemical composition and mass percentage of each raw material are as follows:

[0099] The chemical composition and mass percentage of 4xxx series aluminum alloy scrap are: Si 8.9%, Mg 0.2%, Mn 0.5%, Fe≤0.6%, the balance is Al and other unavoidable impurity elements, and the individual content of other impurity elements is ≤0.1% , the total amount ≤ 0.5%;

[0100] The chemical composition and mass percentage of 5xxx series aluminum alloy scrap are: Mg 4.5%, Mn 0.9%, Co 0.2%, Fe≤0.4%, the balance is Al and other ...

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Abstract

The invention discloses a high-toughness extrusion casting aluminum alloy and a preparation method thereof. The high-toughness extrusion casting aluminum alloy is prepared by the following preparationmethod. The preparation method comprises the following steps of 1) carrying out heating and melting the aluminum alloy waste to obtain an aluminum alloy liquid; 2) carrying out refining and modifyingtreatment on the aluminum alloy liquid; 3) carrying out degassing and impurity removal treatment on the aluminum alloy liquid; 4) carrying out extruding and casting the aluminum alloy liquid into aluminum alloy; 5) carrying out solid solution treatment on the extrusion casting aluminum alloy; and 6) carrying out aging treatment on the extrusion casting aluminum alloy. According to the high-toughness extrusion casting aluminum alloy and the preparation method thereof, the aluminum alloy waste aluminum is used as the main raw material to directly prepare the high-toughness extrusion casting aluminum alloy, so that the use value of the waste aluminum is improved, the production cost of the extrusion casting aluminum alloy is reduced, the prepared extrusion casting aluminum alloy has the advantages of being high in strength and good in plasticity, can be used for extruding and casting various aluminum alloy parts, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a high-strength and tough squeeze-casting aluminum alloy and a preparation method thereof. Background technique [0002] With the development of automobile lightweight, a large number of auto parts need to "substitute aluminum for steel", which has reached the purpose of automobile lightweight. These parts are the stress-bearing structural parts of the safety system in the car. Therefore, the development of automobile lightweight requires high strength and plasticity of these aluminum alloy parts to improve the safety and service life of the car. Squeeze casting is a technique in which molten metal is solidified and formed under the direct action of extrusion force. Squeeze casting is well suited for the production of high-strength aluminum alloy automotive parts. However, the existing aluminum alloys for squeeze casting generally have the problems of low st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/04C22F1/043
CPCC22C1/026C22C1/03C22C21/04C22F1/002C22F1/043
Inventor 陈学文
Owner 广东工程职业技术学院
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