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Preparation method of high-toughness heat-treatment-free material suitable for castings with various wall thicknesses

A heat treatment-free, casting technology, applied in the field of aluminum alloy materials, can solve the problem that the mechanical properties are greatly affected by the wall thickness, and achieve the effects of reducing the phenomenon of agglomeration, improving the overall comprehensive mechanical properties, and enhancing the refinement effect.

Active Publication Date: 2022-04-08
天津新立中合金集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical bottleneck of the existing heat-free treatment materials, the mechanical properties of which are greatly affected by the wall thickness, and provide an improved heat-free treatment material suitable for castings with complex wall thicknesses, thereby improving the overall mechanical properties of the castings

Method used

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  • Preparation method of high-toughness heat-treatment-free material suitable for castings with various wall thicknesses
  • Preparation method of high-toughness heat-treatment-free material suitable for castings with various wall thicknesses
  • Preparation method of high-toughness heat-treatment-free material suitable for castings with various wall thicknesses

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Weigh 13110kg of aluminum ingots for remelting, 975kg of industrial silicon, 300kg of aluminum-titanium-boron master alloy (AlTi5B1), 60kg of metal magnesium, 30kg of aluminum-strontium master alloy (AlSr10), 90kg of electrolytic manganese, 30kg of aluminum-niobium master alloy (AlNb50), 30kg of aluminum Chromium master alloy (AlCr10) 150kg, aluminum lanthanum master alloy (AlLa10) 150kg, aluminum cerium (AlCe10) master alloy 105kg, 15 tons in total.

[0028] A method for preparing a high-strength and tough heat-free material suitable for castings with various wall thicknesses, the steps are as follows:

[0029] (1) Put aluminum ingots and industrial silicon for remelting into a flame-type reverberatory furnace, ignite natural gas for melting, and after all the materials are melted, adjust the temperature of the molten aluminum to 720°C, add aluminum-niobium master alloy, and electrolytic manganese.

[0030] (2) Use a stirring rake to stir the aluminum alloy liquid for ...

Embodiment 2

[0037] Weigh 25530kg of aluminum ingots for remelting, 2250kg of industrial silicon, 750kg of aluminum-titanium-boron master alloy (AlTi5B1), 135kg of metal magnesium, 60kg of aluminum-strontium master alloy (AlSr10), 225kg of electrolytic manganese, 90kg of aluminum-niobium master alloy (AlNb50), 90kg of aluminum Chromium master alloy (AlCr10) 450kg, aluminum lanthanum master alloy (AlLa10) 300kg, aluminum cerium (AlCe10) master alloy 210kg, 30 tons in total.

[0038] A method for preparing a high-strength and tough heat-free material suitable for castings with various wall thicknesses, the steps are as follows:

[0039] (1) Put aluminum ingots and industrial silicon for remelting into a flame-type reverberatory furnace, ignite natural gas for melting, and after all the materials are melted, adjust the temperature of the molten aluminum to 730°C, add aluminum-niobium master alloy, and electrolytic manganese.

[0040] (2) Use a stirring rake to stir the aluminum alloy liquid f...

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Abstract

According to the preparation method of the high-toughness heat-treatment-free material suitable for castings with various wall thicknesses, by adding Nb, B, other rare earth elements and other microelements, the nucleation mechanism of aluminum alloy is changed, the castings obtain fine and uniform metallographic structures, and therefore the overall mechanical property of the castings is improved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials, and relates to a method for preparing an aluminum alloy material with high strength and toughness without heat treatment, and is especially suitable for castings with large differences in wall thickness and size. Background technique [0002] With the deepening of the lightweight strategy, the requirements for the mechanical properties of aluminum alloys for automotive structural parts are getting higher and higher. In China, heat treatment (T5, T6 heat treatment) is generally adopted to enhance the comprehensive mechanical properties of castings. Heat treatment not only lengthens the entire process, but also consumes a lot of cost, and it is easy to deform the thin-walled part of the casting, and subsequent orthopedic treatment is required, resulting in a low pass rate. Therefore, heat-free aluminum alloy materials are favored by more and more casting manufacturers. At present, the heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/03C22C1/06B22D43/00C22C21/02C22C32/00
Inventor 霍会娟郑树波薛晓兰赵有韬姜淑珍吴显扬
Owner 天津新立中合金集团有限公司
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