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High specific rigidity foamed aluminum sandwich board and manufacturing method thereof

A manufacturing method and foamed aluminum technology are applied in the field of porous metal materials and metal matrix composite materials, which can solve the problems of reducing the specific stiffness of foamed aluminum and the like, and achieve the effect of increasing the density

Active Publication Date: 2020-06-02
有研金属复材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a foamed aluminum sandwich panel with high specific stiffness and its manufacturing method. A reinforcement with high hardness and high modulus is added to the metal panel to make a metal matrix composite panel with higher specific stiffness, which can not only Solve the problem that the introduction of metal panels will reduce the specific stiffness of foamed aluminum, and combine the advantages of foamed aluminum with other functional properties of metal matrix composites to improve the comprehensive performance of foamed aluminum sandwich panels and improve the designability of materials , to expand the scope of application of the material

Method used

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  • High specific rigidity foamed aluminum sandwich board and manufacturing method thereof
  • High specific rigidity foamed aluminum sandwich board and manufacturing method thereof
  • High specific rigidity foamed aluminum sandwich board and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The process of preparing an aluminum foam sandwich panel with a total thickness of 10mm, a panel thickness of 0.5mm, and a foam aluminum core layer thickness of 9mm is as follows:

[0056] (1) Weigh 79.5g of Al-10Si-0.5Mg alloy powder with a particle size of 150 mesh (density of 2.65g / cm 3 ), the particle size is 0.4g of titanium hydride powder of 325 meshes, so that the mass fraction of aluminum alloy powder and titanium hydride powder are respectively 99.5% and 0.5wt%, all are packed in the mixing tank, mixed on the mixer for 8 hours, made mixed powder;

[0057] (2) Use 25% volSiC p / Al composite material is used as the panel material, and it is cut into two square plates of 100mm (length) × 100mm (width) × 0.5mm (thickness). The oxide film is removed by cleaning with NaOH aqueous solution, and the surface is mechanically polished with a copper brush. Choose a zinc strip with a thickness of 0.05mm, and use the same method for surface treatment;

[0058] (3) Prepare...

Embodiment 2

[0062] The process of preparing an aluminum foam sandwich panel with a total thickness of 25mm, a panel thickness of 1.25mm, and a foam aluminum core layer thickness of 22.5mm is as follows:

[0063] (1) Weigh 199g of Al-10Si-0.5Mg alloy powder with a particle size of 150 meshes (density of 2.65g / cm 3 ), particle size is 325 mesh titanium hydride powder 1g, makes the massfraction of aluminum alloy powder and titanium hydride powder be 99.5% and 0.5wt% respectively, all packs in the mixing tank, mixes on the mixer for 8 hours, makes the mixed powder;

[0064] (2) Use 10% volSiC p / Al composite material is used as the panel material, which is cut into two 100mm (length) × 100mm (width) × 1.25mm (thick) square plates, cleaned with NaOH aqueous solution to remove the oxide film, and mechanically polished with a copper brush. Choose a zinc strip with a thickness of 0.05mm, and use the same method for surface treatment;

[0065] (3) Prepare a steel mold with an inner cavity size ...

Embodiment 3

[0069] The process of preparing an aluminum foam sandwich panel with a total thickness of 40mm, a panel thickness of 2mm, and a foam aluminum core layer thickness of 36mm is as follows:

[0070] (1) Weigh 318g of Al-11Si alloy powder with a particle size of 150 meshes (density of 2.65g / cm 3 ), particle size is 325 mesh titanium hydride powder 3.2g, makes the massfraction of aluminum alloy powder and titanium hydride powder be 99% and 1wt% respectively, all packs in the mixing tank, mixes on the mixer for 8 hours, makes the mixed powder;

[0071] (2) Use 15% volSiC p / Al composite material is used as the panel material, and it is cut into two square plates of 100mm (length) × 100mm (width) × 2mm (thickness). The oxide film is cleaned with NaOH aqueous solution, and the surface is mechanically polished with a copper brush. Choose a zinc strip with a thickness of 0.1mm, and use the same method for surface treatment;

[0072](3) Prepare a steel mold with an inner cavity size of...

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Abstract

The invention relates to a high specific rigidity foamed aluminum sandwich board and a manufacturing method thereof and belongs to the technical field of porous metal materials and metal-based composite materials. The foamed aluminum sandwich board is composed of upper and lower panels and a middle foamed aluminum core layer. The substrate of foamed aluminum is an aluminum alloy, and the panels are particle enhanced aluminum-based composite materials. The manufacturing method comprises the following steps of first, uniformly mixing aluminum powder with a foaming agent titanium hydride powder to prepare mixed powder; adding the particle enhanced aluminum-based composite materials to the upper and lower sides of the mixed powder as the panels, and fully filling a die with the mixed powder for hot pressing densification to prepare a foamable prefabricated member; inserting a zinc belt between the panels and the mixed powder, and carrying out transitional liquid phase diffusion in hot pressing to achieve metallurgical connection of the panels and the core layer; and finally, heating and foaming the prefabricated member to obtain the foamed aluminum sandwich board. The foamed aluminum sandwich board not only has relatively high specific rigidity, but also has comprehensive advantages of high specific strength, high thermal conductivity, low thermal expansion, fatigue resistance, good damping capacity and the like, and the performance can be designed.

Description

technical field [0001] The invention relates to a foamed aluminum sandwich panel with high specific stiffness and a manufacturing method thereof, belonging to the technical field of porous metal materials and metal matrix composite materials. Background technique [0002] Aluminum foam sandwich panel is a kind of layered porous metal material made of aluminum foam core layer and dense metal panel. Aluminum foam sandwich panel not only has the characteristics of low specific gravity, high specific stiffness, good impact resistance and vibration damping performance, but also has good electromagnetic shielding, heat insulation and fire prevention functions. Broad application prospects. The foamed aluminum sandwich panels currently researched and developed are usually composed of a foamed aluminum core layer and upper and lower panels. The panel materials include aluminum, steel, titanium and other metals. Taking the sheet as an example, the bending stiffness of these three me...

Claims

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Application Information

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IPC IPC(8): B22F3/11B22F7/04
CPCB22F3/1125B22F7/006
Inventor 刘彦强樊建中马自力
Owner 有研金属复材技术有限公司
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