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Method for preparing foamed aluminum sandwich panels by powder forming

A foamed aluminum and sandwich panel technology, which is applied in the field of layered composite material preparation, can solve problems affecting the performance of foamed aluminum sandwich panels, foam structure damage, and low density of foamed aluminum sandwich panels. High product yield, extensive promotion, and the effect of improving mechanical properties

Active Publication Date: 2018-10-23
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is relatively simple, the panel density of the aluminum foam sandwich panel prepared by it is not high, and applying pressure to the foam aluminum sheet at high temperature will also cause a certain degree of damage to the existing foam structure, which will affect the prepared foam. Performance of aluminum foam sandwich panels

Method used

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  • Method for preparing foamed aluminum sandwich panels by powder forming
  • Method for preparing foamed aluminum sandwich panels by powder forming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing foamed aluminum sandwich panels by powder forming, carried out in the following steps:

[0048] Step 1. Prepare materials

[0049] According to the raw material ratio of the aluminum foam sandwich panel, weigh the core layer raw material and panel raw material;

[0050] Among them, the core material is aluminum powder with a particle size of 38 μm, SiC powder with a particle size of 80 μm, magnesium powder with a particle size of 20 μm, and TiH powder with a particle size of 38 μm. 2 powder, the amount of SiC powder added is 3% of the mass of aluminum powder, the amount of magnesium powder added is 1.0% of the mass of aluminum powder, TiH 2 The amount of powder added is 1.5% of the mass of aluminum powder;

[0051] The raw material of the panel is aluminum powder;

[0052] Pre-oxidize the weighed SiC powder, the treatment method is to pass air into it, and oxidize at 900°C for 5 hours;

[0053] TiH to be weighed 2 The powder is oxidized in ad...

Embodiment 2

[0063] A method for preparing foamed aluminum sandwich panels by powder forming, carried out in the following steps:

[0064] Step 1. Prepare materials

[0065] According to the raw material ratio of the aluminum foam sandwich panel, weigh the core layer raw material and panel raw material;

[0066] Among them, the raw materials of the core layer are aluminum-silicon-copper alloy powder (Al-8wt.% Si-3wt.% Cu) with a particle size of 43 μm, SiC powder with a particle size of 40 μm, magnesium powder with a particle size of 40 μm and TiH with a particle size of 43 μm. 2 Powder is the raw material, the addition of SiC powder is 6% of the mass of Al-Si-Cu alloy powder, the addition of Magnesium powder is 0.8% of the mass of Al-Si-Cu alloy powder, TiH 2 The amount of powder added is 1.0% of the mass of aluminum-silicon-copper alloy powder;

[0067] The raw material of the panel is aluminum powder with a particle size of 43 μm;

[0068] Pre-oxidize the weighed SiC powder, the trea...

Embodiment 3

[0078] A method for preparing foamed aluminum sandwich panels by powder forming, carried out in the following steps:

[0079] Step 1. Prepare materials

[0080] According to the raw material ratio of the aluminum foam sandwich panel, weigh the core layer raw material and panel raw material;

[0081] Among them, the raw materials of the core layer are aluminum-silicon alloy powder (Al-12wt.% Si) with a particle size of 74 μm, SiC powder with a particle size of 10 μm, magnesium powder with a particle size of 60 μm, and TiH with a particle size of 74 μm. 2 Powder is the raw material, the amount of SiC powder added is 9% of the mass of Al-Si alloy powder, the amount of magnesium powder added is 0.6% of the mass of Al-Si alloy powder, and the amount of TiH 2 The amount of powder added is 0.5% of the mass of aluminum-silicon alloy powder;

[0082] The raw material of the panel is aluminum powder with a particle size of 74 μm;

[0083] Pre-oxidize the weighed SiC powder, the treat...

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Abstract

The invention discloses a method for producing a foamed-aluminum sandwich panel by powder forming and belongs to the field of laminated composites. The method specially includes: according to raw material ratio of the foamed-aluminum sandwich panel, weighing materials; mixing the weighed central layer materials; according to the panel-central layer-panel sandwich structure of the foamed-aluminum sandwich panel, evenly paving the panel material-central layer mixed powder-panel material on a pressing mould for pressing with the pressure of 300-500MPa, and keeping the pressure for 5-15 minutes to obtain a performing billet; adding a foaming mould into a heating furnace for heating, placing the performing billet in the cavity of the foaming mould, closing the foaming mould, and cooling after insulation and foaming to obtain the foamed-aluminum sandwich panel. The performing billet can be formed in one step by the aid of the powder pressing technology, the produced foamed-aluminum sandwich panel is controllable in thickness and uniform in structure, the foam central layer and the panel are completely infused, problems about interfacial strength and high brittleness are solved, mechanical property of the foamed-aluminum sandwich panel is improved, and wide application range is achieved.

Description

technical field [0001] The invention relates to the technical field of a method for preparing a layered composite material, in particular to a method for preparing a foamed aluminum sandwich panel by powder forming. Background technique [0002] A sandwich composite structure made of aluminum foam as the core material and dense metal plates (such as steel plates, aluminum plates, titanium plates, nickel plates, etc.) as panels, referred to as aluminum foam sandwich panels. The foamed aluminum sandwich panel not only inherits the advantages of light weight, high strength, shock absorption and energy absorption, and electromagnetic shielding of the foamed aluminum material, but also effectively increases the moment of inertia of the sandwich structure due to the separation of the core layer from the shell, thereby forming a A lightweight structure with high specific strength and specific stiffness has broad application prospects in the fields of transportation, aerospace and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/02B22F3/11
CPCB22F3/1125B22F7/006
Inventor 罗洪杰于路吴伟成卢晓通林皓徐建荣张志刚吴林丽
Owner NORTHEASTERN UNIV LIAONING