A kind of foamed aluminum sandwich panel with high specific stiffness and its manufacturing method

A manufacturing method and aluminum foam technology, which is applied in the field of porous metal materials and metal matrix composite materials, can solve the problems of reducing the specific stiffness of aluminum foam, and achieve the effects of low thermal expansion, clean interface, and high specific strength

Active Publication Date: 2022-03-11
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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  • A kind of foamed aluminum sandwich panel with high specific stiffness and its manufacturing method
  • A kind of foamed aluminum sandwich panel with high specific stiffness and its manufacturing method
  • A kind of foamed aluminum sandwich panel with high specific stiffness and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0056] (1) It is called the granularity of 150 destimilation Al-10Si-0.5mg alloy powder 79.5 g (density 2.65 g / cm) 3 0.4 g of titanium hydride powder having a particle size of 325, such that the mass fraction of the aluminum alloy powder and the hydroside powder is 99.5% and 0.5% by weight, respectively, and all loaded into the mixing tank, mixed 8 hours on the mixer, made Mixed powder;

[0057] (2) Select 25% Volsic p The / Al composite is used as a panel material to cut it into a square plate of two 100 mm (long) × 100 mm (width) × 0.5 mm (thick), and the NaOH aqueous solution is cleaned to remove the oxide film, and a copper brush is used to protect the surface. The zinc strip having a thickness of 0.05 mm is selected, and surface treatment is performed using the same method;

[0058] (3) Preparation of steel molds with a ...

Embodiment 2

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

[0063] (1) It is called the particle size of 150 destimilation Al-10Si-0.5mg alloy powder 199g (density of 2.65 g / cm) 3 1g of the titanium hydride powder of 325 mesh, such that the mass fraction of the aluminum alloy powder and the hydroside powder is 99.5% and 0.5% by weight, respectively, and all loaded into the mixing tank, mixed on the mixer for 8 hours, made into mixing powder;

[0064] (2) Select 10% Volsic p The / Al composite is used as a panel material, and it is cut into two 100 mm (length) × 100 mm (width) × 1.25 mm (thick) square plate, and the NaOH aqueous solution is cleaned to remove the oxide film, and the surface of the copper brush is used. The zinc strip having a thickness of 0.05 mm is selected, and surface treatment is performed using the same method;

[0065] (3) Preparation of steel...

Embodiment 3

[0069] The process of the total thickness of 40 mm, the panel thickness is 2mm, and the thickness of the foam aluminum core layer is 36 mm is as follows:

[0070] (1) Weigh 318g (density of 2.65 g / cm) of Al-11Si alloy powder with a particle size of 150 destination 3 ) powder;

[0071] (2) Select 15% Volsic p The / Al composite material is used as a panel material, and it is cut into two 100 mm (length) × 100 mm (width) × 2 mm (thick) square plate, and the NaOH aqueous solution is cleaned to remove the oxide film, and a copper brush is used to protect the surface. The zinc belt having a thickness of 0.1 mm is selected, and surface treatment is performed using the same method;

[0072](3) Preparation of steel molds with a lumen size of 100 mm (length) × 100 mm (width) × 50mm (high), sequentially load a piece of panel and a zinc strip in the steel mold; then load the mixed powder, the powder is high 12mm, the relative density of powder powder is 60% ± 2%; finally load another zinc ...

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Abstract

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. The aluminum foam sandwich panel is composed of upper and lower panels and an aluminum foam core layer in the middle. The base material of the aluminum foam is aluminum alloy, and the panel is a particle-reinforced aluminum-based composite material. First, the aluminum powder and the foaming agent titanium hydride powder are evenly mixed to form a mixed powder, and a layer of particle-reinforced aluminum-based composite material is added on the upper and lower sides of the mixed powder as a panel, and all are put into a mold for hot-pressing and densification to make a foamable A prefabricated part; a layer of zinc strip is inserted between the panel and the mixed powder, and transitional liquid phase diffusion occurs during hot pressing to realize the metallurgical connection between the panel and the core layer; finally, the prefabricated part is heated and foamed to obtain a foamed aluminum sandwich panel. The aluminum foam sandwich panel of the present invention not only has high specific rigidity, but also has comprehensive advantages such as high specific strength, high thermal conductivity, low thermal expansion, fatigue resistance, and good damping performance, and the performance can be designed.

Description

Technical field [0001] The present invention relates to a method for producing aluminum foam sandwich, and high specific rigidity, are porous metal material and metal matrix composite materials technology. Background technique [0002] Aluminum foam sandwich panels is a layer-like metal material made of a porous foamed metal layer and a dense aluminum composite panel. Aluminum foam sandwich panels not only have low specific gravity, high specific rigidity, impact resistance, vibration damping characteristics of good performance, but also has good electromagnetic shielding, fire insulation function, having automobile, railway train, construction, electronics, and defense industry Broad application prospects. Current research and development of aluminum foam sandwich usually consists of aluminum foam core layer and two layers of panels, panel materials including aluminum, steel, titanium and other metal. In an example sheet metal, bending stiffness of the metal sheet corresponding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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