Corrosion-resistant aluminum alloy profile and extrusion method thereof

A technology of aluminum alloy profile and extrusion method, which is applied in the field of high toughness and anti-corrosion aluminum alloy profile and its extrusion and high strength, and can solve the problem of single fibrous grain structure of 6005 aluminum alloy profile and the strength of 6005 aluminum alloy profile , Fracture toughness and stress corrosion resistance improvement limit, low strength and other problems, to achieve the effect of inhibiting grain growth, increasing strength and inhibiting recrystallization

Active Publication Date: 2017-12-08
佛山市三水凤铝铝业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 6005 aluminum alloy is a medium-strength aluminum alloy that can be strengthened by heat treatment. It has good extrusion processing performance and welding performance, but when it is used as a stressed structural part, it still generally has the problem of low strength.
[0005] In short, the existing technology is still unable to obtain a single fibrous grain structure along the extrusion direction of the 6005 aluminum alloy profile, so that the improvement of the strength, fracture toughness and stress corrosion resistance of the 6005 aluminum alloy profile is still relatively limited

Method used

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  • Corrosion-resistant aluminum alloy profile and extrusion method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The composition and mass percentage of the aluminum alloy profile are: Mg 0.4%, Si 0.6%, Sn 0.2%, Ta 0.1%, Ge0.1%, Fe≤0.15%, and the balance is Al.

[0059] The extrusion method of the aluminum alloy profile comprises the following steps:

[0060] Step 1: Select aluminum ingots with a purity of ≥99.8%, magnesium ingots with a purity of ≥99.9%, crystalline silicon with a purity of ≥99.95%, and Al-10Sn alloys, Al-10Ta alloys, and Al-10Ge alloys as raw materials;

[0061] Step 2: Heat and melt the aluminum ingot at 760°C, then add 0.4% magnesium ingot, 0.6% crystalline silicon, 2% Al-10Sn alloy, 1% Al-10Ta alloy and 1% Al-10Ge alloy, stirred and melted into aluminum alloy liquid;

[0062] The third step: use hexachloroethane refining agent to spray and refine the aluminum alloy liquid in the furnace for 10 minutes, and let it stand for 50 minutes after removing the slag;

[0063] Step 4: Flow the aluminum alloy liquid sequentially through a degasser set on the launder wi...

Embodiment 2

[0069] The composition and mass percentage of aluminum alloy profiles are: Mg 0.5%, Si 0.7%, Sn 0.2%, Ta 0.1%, Ge0.3%, Fe≤0.15%, and the balance is Al.

[0070] The extrusion method of the aluminum alloy profile comprises the following steps:

[0071] Step 1: Select aluminum ingots with a purity of ≥99.8%, magnesium ingots with a purity of ≥99.9%, crystalline silicon with a purity of ≥99.95%, and Al-10Sn alloys, Al-10Ta alloys, and Al-10Ge alloys as raw materials;

[0072] Step 2: Heat and melt the aluminum ingot at 770°C, then add 0.5% magnesium ingot, 0.7% crystalline silicon, 2% Al-10Sn alloy, 1% Al-10Ta alloy and 3% Al-10Ge alloy, stirred and melted into aluminum alloy liquid;

[0073] The third step: use hexachloroethane refining agent to spray and refine the aluminum alloy liquid in the furnace for 20 minutes, and let it stand for 50 minutes after removing the slag;

[0074] Step 4: Flow the aluminum alloy liquid sequentially through a degasser set on the launder with ...

Embodiment 3

[0080] The composition and mass percentage of the aluminum alloy profile are: Mg 0.6%, Si 0.9%, Sn 0.3%, Ta 0.1%, Ge0.1%, Fe≤0.15%, and the balance is Al.

[0081] The extrusion method of the aluminum alloy profile comprises the following steps:

[0082] Step 1: Select aluminum ingots with a purity of ≥99.8%, magnesium ingots with a purity of ≥99.9%, crystalline silicon with a purity of ≥99.95%, and Al-10Sn alloys, Al-10Ta alloys, and Al-10Ge alloys as raw materials;

[0083] Step 2: Heat and melt the aluminum ingot at 765°C, then add 0.6% magnesium ingot, 0.9% crystalline silicon, 3% Al-10Sn alloy, 1% Al-10Ta alloy and 1% Al-10Ge alloy, stirred and melted into aluminum alloy liquid;

[0084] The third step: use hexachloroethane refining agent to spray and refine the aluminum alloy liquid in the furnace for 15 minutes, and let it stand for 55 minutes after removing slag;

[0085] Step 4: Flow the aluminum alloy liquid sequentially through a degasser set on the launder with a...

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Abstract

The invention discloses a corrosion-resistant aluminum alloy profile and an extrusion method thereof. The corrosion-resistant aluminum alloy profile is composed of, by mass, 0.4%-0.6% of Mg, 0.6%-0.9% of Si, 0.1%-0.3% of SN, 0.1%-0.3% of Ta, 0.1%-0.3% of Ge, not larger than 0.15% of Fe and the balance Al, wherein 0.4%<=(Sn+Ta+Ge)<=0.6%. According to the corrosion-resistant aluminum alloy profile, the specific alloy composition constituting and the extrusion method of the corrosion-resistant aluminum alloy profile are designed, recrystallization and grain growth are restrained, the aluminum alloy profile obtains single fiber grain structures in the extruding direction, the strength, breaking tenacity and stress corrosion resistance property of the aluminum alloy profile are improved, the beneficial effect of high combination property is achieved, the corrosion-resistant aluminum alloy profile can be widely applied to buildings, electric products, mechanized equipment, transportation, aerospace and other fields, and the wide application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy profiles and production thereof, in particular to a high-strength, high-toughness, corrosion-resistant aluminum alloy profile and an extrusion method thereof. Background technique [0002] Aluminum alloy has the advantages of low density, high specific strength, good plasticity, excellent electrical conductivity, thermal conductivity and corrosion resistance, and can be processed into various profiles. It is widely used in construction, electronic appliances, mechanical equipment, transportation, aerospace and other fields . With the development of economy and society, in order to improve the bearing capacity, service safety and service life of aluminum alloy profile structural parts, the comprehensive performance requirements of aluminum alloy profiles are also getting higher and higher, such as high strength, fracture toughness and stress resistance. corrosion performance, etc. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/02C22F1/043C22F1/047C22F1/05
CPCC22C21/02C22C21/08C22F1/043C22F1/047C22F1/05
Inventor 胡权陈慧韩帆王顺成
Owner 佛山市三水凤铝铝业有限公司
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