Method for producing bubble aluminum alloy special-shaped member with even pore structure

A foamed aluminum alloy and aluminum alloy technology, which is applied in the field of preparing foamed aluminum alloy special-shaped parts with a uniform pore structure, can solve the problems of large amount of outgassing, concentrated shrinkage cavities, and unstable process, and achieve simplified process, uniform pore structure, and reduced cost effect
CN100563874CInactive Publication Date: 2009-12-02SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2009-12-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a foamed aluminum alloy special-shaped piece with a uniform pore structure, which comprises the following steps: the first step: heating the aluminum alloy to melt, adding titanium hydride, stirring to disperse the titanium hydride, and then adding calcium to aluminum In the molten alloy, stir to increase the viscosity of the melt, cool the stirred melt to obtain a preform; the second step: put the above preform into the mold, heat it up, and keep it warm at this temperature, The primary foamed aluminum alloy prefabricated part is made into secondary foam in the mould, and the foamed aluminum alloy is cooled to obtain a foamed aluminum alloy product. In the second step, before the secondary foaming is heated up, the primary foamed aluminum alloy prefabricated part and the mold are preheated and kept warm. In the present invention, titanium hydride is added before the tackifier calcium is added, and the viscosity of the aluminum alloy melt is low, which is conducive to the uniform dispersion of titanium hydride in the aluminum alloy melt in a relatively short period of time, and is conducive to the preparation of a uniform pore structure. Dimensional foam aluminum alloy profiled parts.
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Description

technical field

[0001] The invention relates to a method for preparing a foamed aluminum alloy product, in particular to a method for preparing a foamed aluminum alloy special-shaped piece with a uniform pore structure. Background technique

[0002] Due to the special pore structure, the closed-cell aluminum alloy foam has become one of the current hot materials because of its light weight and multi-functional structural materials. Due to the needs of civil and high-tech fields such as automobiles, aluminum foam special-shaped parts and sandwich structures are becoming the forefront of the field of foam metal preparation. There are insurmountable difficulties in the direct preparation of special-shaped parts, sandwich structures, foamed aluminum alloy fillers, embedded parts, etc. by the traditional melt foaming method, while there are costs in the preparation of foamed aluminum special-shaped parts, sandwich structures, etc. High, unstable process and other defects. Howev...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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