Production of foamed aluminium alloy deformed piece by secondary foam

A foamed aluminum alloy and foaming technology, which is applied in the field of preparation of foamed aluminum alloy, can solve the problems of high cost, unstable process, and difficulties, and achieve the effect of low cost, reliable process and uniform viscosity

Inactive Publication Date: 2005-07-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to directly prepare special-shaped parts by the traditional melt foaming method, but there are defects such as high cost and unstable process in the preparation of special-shaped aluminum foam parts by powder metallurgy.

Method used

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  • Production of foamed aluminium alloy deformed piece by secondary foam
  • Production of foamed aluminium alloy deformed piece by secondary foam
  • Production of foamed aluminium alloy deformed piece by secondary foam

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A method for preparing foamed aluminum alloy profiled parts through secondary foaming, comprising the following steps:

[0045] The first step: heating the aluminum alloy to melt, adding calcium equivalent to 0.5%-5% of the aluminum alloy addition (weight percentage) to the aluminum alloy melt, stirring evenly (stirring speed can be 300-600rpm); Add titanium hydride equivalent to 0.5%-5% of the weight of the aluminum alloy, stir at a speed of 800-5000rpm for 20-100 seconds, so that the titanium hydride is evenly mixed in the melt, and then raise the stirring paddle to obtain a foamed aluminum alloy melt , and then quickly cool the foamed aluminum alloy melt to obtain a foamed aluminum alloy; wherein, the aluminum alloy can be a cast aluminum-silicon alloy, such as ZL101, ZL102, ZL111 series alloys, or a cast aluminum-copper alloy, For example, ZL201, ZL202, ZL205 series alloys can also be deformed aluminum alloys mainly containing copper or silicon. After adding titaniu...

Embodiment 2

[0051] A method for preparing foamed aluminum alloy profiled parts through secondary foaming, comprising the following steps:

[0052] The first step: heating the aluminum alloy to melt, adding calcium equivalent to 0.5%-5% of the aluminum alloy addition (weight percentage) to the aluminum alloy melt, stirring evenly (stirring speed can be 300-600rpm); Add titanium hydride equivalent to 0.5%-5% of the weight of the aluminum alloy, stir at a speed of 800-5000rpm for 20-100 seconds, so that the titanium hydride is evenly mixed in the melt, and then raise the stirring paddle to obtain a foamed aluminum alloy melt , and then quickly cool the foamed aluminum alloy melt to obtain a foamed aluminum alloy; wherein, the aluminum alloy can be a cast aluminum-silicon alloy, such as ZL101, ZL102, ZL111 series alloys, or a cast aluminum-copper alloy, For example, ZL201, ZL202, ZL205 series alloys can also be deformed aluminum alloys mainly containing copper or silicon. After adding titaniu...

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Abstract

The invention carried out a process to produce foamed aluminium alloy with the secondary foaming. The process is: first to melt the aluminium alloy and add the Ca into the molten, then adding into the titanium hydride to get the first foamed aluminium alloy, next to heat the first alloy and make it preformed unit, last to foam the preformed unit and cool to get the secondary foamed aluminium alloy.

Description

technical field [0001] The invention relates to a method for preparing foamed aluminum alloys, in particular to a method for preparing foamed aluminum alloys through secondary foaming. Background technique [0002] The ultra-light metal structure with closed-cell aluminum foam as the focus realizes lightweight and multi-functional structural materials due to its special pore structure, thus becoming a hot spot in aerospace and high technology. [0003] Due to the needs of civil and high-tech fields such as automobiles, aluminum foam special-shaped parts are becoming the forefront in the field of foam metal preparation. It is difficult to directly prepare special-shaped parts by the traditional melt foaming method, but there are defects such as high cost and unstable process in the preparation of special-shaped aluminum foam parts by powder metallurgy. Contents of the invention [0004] The invention provides a low-cost m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 何德坪尚金堂张勇明
Owner SOUTHEAST UNIV
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