Lattice-gradient foamed aluminum composite material and preparation method thereof

A technology of composite materials and aluminum foam, which is applied in the field of lattice-gradient foam aluminum composite materials and its preparation, can solve the problems of low structural rigidity and strength, poor energy dissipation performance, low transverse shear strength and bearing capacity, etc. Achieve low cost, reduce structural weight, and reduce the effect of initial stress peak

Inactive Publication Date: 2012-04-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the usual porous metal sandwich panels are mostly single structures such as foamed aluminum or corrugated, which only have a single function, or a single function is strong while other functions are weakened. For example, the main advantage of closed-cell rigid aluminum foam as the core material is that it has It has the characteristics of high impact energy absorption rate, vibration isolation and sound insulation, but at the same time, it has the disadvantages of lower structural stiffness and strength than lattice structure core materials, lower transverse shear strength and bearing capacity, which seriously limits the foam core sandwich structure. Application on main structure
Lattice metal sandwich panels have high transverse shear strength and bearing capacity, but poor energy dissipation performance

Method used

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  • Lattice-gradient foamed aluminum composite material and preparation method thereof
  • Lattice-gradient foamed aluminum composite material and preparation method thereof
  • Lattice-gradient foamed aluminum composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: 1) At first, the carbon steel perforated rhombic mesh is formed into a pyramid structure core 1 by molding and folding techniques, then the formed pyramid structure core 1 and panel 2 are cleaned to remove oil stains and rust, and brazed Pyramid structure core 1 and panel 2 are welded to form pyramid structure lattice metal sandwich panel;

[0021] 2) Then, according to the spatial dimension of the hole 4 in the pyramid structure core body 1, the block foam pure aluminum is cut into a triangular prism or a trapezoidal prism 5 adapted to the space dimension of the pyramid structure core body 1 middle hole 4 by a cutting machine;

[0022] 3) Finally, evenly coat a layer of castor glue on the contact surface of the triangular prism or trapezoidal prism 5 and the pyramid structure core 1, then insert the triangular prism or trapezoidal prism 5 into the hole 4 of the pyramid structure lattice metal sandwich plate, see figure 2 , The insertion method is filled ...

Embodiment 2

[0024] 1) Firstly, the flattened steel mesh is molded and folded to form a pyramid structure core 1, and then the formed pyramid structure core 1 and panel 2 are cleaned to remove oil and rust, and the pyramid structure core 1 is welded by laser welding. Welded with the panel 2 to form a pyramid structure lattice metal sandwich panel;

[0025] 2) Then, according to the spatial size of the hole 4 in the pyramid structure core body 1, a cutting machine is used to cut the block aluminum alloy into a triangular prism or a trapezoidal prism 5 suitable for the space size of the hole 4 in the pyramid structure core body 1;

[0026] 3) Finally, evenly coat a layer of Loctite glue on the contact surface of the triangular prism or trapezoidal prism 5 and the pyramid structure core 1, then insert the triangular prism or trapezoidal prism 5 into the hole 4 of the pyramid structure lattice metal sandwich plate, see figure 2 , The insertion method is filled at intervals, and it is left to...

Embodiment 3

[0027] Embodiment 3: 1) First, the flattened steel plate is molded and folded to form a corrugated structure core 3, and then the formed corrugated structure core 3 and panel 2 are cleaned to remove oil and rust, and brazed or laser welded The corrugated core 3 is welded with the panel 2 to form a corrugated lattice metal sandwich panel;

[0028] 2) Then, according to the space size of the hole 4 in the corrugated structure core body 3, a cutting machine is used to cut the block-shaped pure aluminum foam into a triangular prism or a trapezoidal prism 5 adapted to the space size of the hole 4 in the corrugated structure core body 3;

[0029] 3) Finally, evenly coat a layer of castor glue on the contact surface of the triangular prism or trapezoidal prism 5 and the corrugated structure core 3, and then insert the triangular prism or trapezoidal prism 5 into the hole 4 of the corrugated structure lattice metal sandwich plate, see figure 1 , The insertion method is filled at inter...

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Abstract

A preparation method of a lattice-gradient foamed aluminium composite material comprises the adhesive bonding and combination of a lattice metal material (including a ripple structure and a pyramid structure) and a cut foamed aluminium to obtain a multifunctional gradient composite porous material. The invention realizes the combination of a lattice metal material and foamed aluminium, and obtains a lattice-gradient foamed aluminium composite structural material sandwich plate with a geometric gradient. The lattice metal-gradient foamed aluminium composite material sandwich plate has wide application prospects in fields of safety protection, traffic transportation, mechanical manufacturing, and military affairs, has very effective performance with respect to structure weight reduction, impact deformation improvement, magnetic shielding and the like, can bring into play its high strength, high rigidity and excellent damping performance especially in mechanical manufacturing industry, and also has low manufacturing cost.

Description

technical field [0001] The invention relates to a metal-foam composite material and a preparation method thereof, in particular to a lattice-gradient foam aluminum composite material and a preparation method thereof. Background technique [0002] Ultralight porous metal materials are a class of novel multifunctional materials that have emerged with the rapid development of material preparation and machining technology in recent years, and have the characteristics of structural and functional integration. Its core has high porosity, and its microstructure can be divided into disordered and ordered according to the degree of regularity. The former includes closed-cell aluminum foam materials, while the latter includes two-dimensional lattice materials (such as corrugated structures) and three-dimensional trusses. Structure (such as pyramid structure, tetrahedron structure). [0003] At present, the usual porous metal sandwich panels are mostly single structures such as foamed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/10B32B1/06B32B15/01B32B7/12
Inventor 卢天健张钱城闫雷雷金峰
Owner XI AN JIAOTONG UNIV
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