Aluminum foam sandwich plate with gradient interface and manufacturing method thereof

Abstract

The invention discloses an aluminum foam sandwich plate with a gradient interface and a manufacturing method thereof, which belong to the technical field of porous metallic materials and laminar composite materials. The manufacturing method comprises the steps of firstly, uniformly mixing aluminite powder or aluminum alloy powder and foaming agent titanium hydride powder to obtain mixed powder; then sequentially filling lower panel alloy powder, the mixed powder and upper panel alloy powder into a steel mold, wherein the three powder is distributed in a layered way; then putting the steel mold into a hot press machine so as to be hot-press densified to obtain a foamable sandwich plate prefabricated member; and finally heating and foaming the prefabricated member to obtain the foam sandwich plate with the gradient interface. According to the method, the densification of the aluminum foam prefabricated member and a compounding process of aluminum foam and panels are completed at the same time within one working procedure, so that the process flow is short, and the manufacturing cost is low; commercially available metal sheets have no need to be used, so that a material selection range and a design space are wide; and the aluminum foam sandwich plate with the gradient interface prepared through the invention is hopefully applied widely in the fields of automobiles, rail trains, buildings, electronics and national defense and military industry.

Description

technical field

[0001] The invention belongs to the technical field of porous metal materials and layered composite materials, in particular to an aluminum foam sandwich panel with a gradient interface and a manufacturing method thereof. 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 panels have excellent comprehensive properties such as low specific gravity, high specific stiffness, impact resistance, good vibration damping performance, and electromagnetic shielding, so they have broad application prospects in the fields of automobiles, rail trains, construction, electronics, and national defense industries. There is an urgent need for lightweight and multifunctional materials in various fields. The commonly used preparation methods of foam aluminum sandwich panels are: foam aluminum and panel adhesive composite process, foam aluminum and pa...

Examples

Embodiment 1

[0031] The process of preparing an aluminum foam sandwich panel with a total thickness of 29mm, a panel thickness of 2.5mm, and a foam aluminum core layer thickness of 24mm is as follows:

[0032] (1) Weigh 139.3g of Al-11Si alloy powder with a particle size of 150 mesh (density of 2.65g / cm 3 ), particle size is 325 purpose titanium hydride powder 0.7g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 0.5wt% and 99.5%), all packs in the barrel type mixing tank, mixes 8 on the mixer Hours, made into mixed powder;

[0033] (2) Weigh two portions of 3003Al alloy powder with a particle size of 150 mesh, each 90g (density 2.73g / cm3 ), the total weight of the powder (i.e. the total weight of the sandwich panel sample) 320g;

[0034] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height). 90g of 3003Al alloy powder, 140g of mixed powder and 90g o...

Embodiment 2

[0039] The process of preparing an aluminum foam sandwich panel with a total thickness of 10.6mm, a panel thickness of 0.8mm, and a foam aluminum core layer thickness of 9mm is as follows:

[0040] (1) Weigh 261.1g of Al-10Si-0.5Mg alloy powder with a particle size of 150 mesh (density of 2.65g / cm 3 ), particle size is 325 purpose titanium hydride powder 1.3g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 0.5wt% and 99.5%), all packs in the barrel type mixing tank, mixes 8 on the mixer Hours, made into mixed powder;

[0041] (2) Take two parts of particle size respectively and be 118.8g each of pure aluminum powder of 150 mesh (density is 2.7g / cm 3 ). The total weight of the powder (i.e. the total weight of the sandwich panel sample) is 500g;

[0042] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height), and 118.8g of pure aluminum ...

Embodiment 3

[0047] The process of preparing an aluminum foam sandwich panel with a total thickness of 40mm, a panel thickness of 3mm, and a foam aluminum core layer thickness of 34mm is as follows:

[0048] (1) Weigh 400g of 6061Al alloy powder with a particle size of 150 meshes (density of 2.7g / cm 3 ), particle size is 325 purpose titanium hydride powder 4g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 1.0wt% and 99%), all packs in the barrel type mixing tank, mixes 16 hours on the mixer , made into mixed powder;

[0049] (2) Weigh two parts of Ti-6Al-4V alloy powder with a particle size of 150 meshes, each 292g (density is 4.43g / cm 3 ). The total weight of the powder (i.e. the total weight of the sandwich panel sample) is 988g;

[0050] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height), and 292g of Ti-6Al-4V alloy powder, 404g of mixed po...

technical field

[0001] The invention belongs to the technical field of porous metal materials and layered composite materials, in particular to an aluminum foam sandwich panel with a gradient interface and a manufacturing method thereof. 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 panels have excellent comprehensive properties such as low specific gravity, high specific stiffness, impact resistance, good vibration damping performance, and electromagnetic shielding, so they have broad application prospects in the fields of automobiles, rail trains, construction, electronics, and national defense industries. There is an urgent need for lightweight and multifunctional materials in various fields. The commonly used preparation methods of foam aluminum sandwich panels are: foam aluminum and panel adhesive composite process, foam aluminum and pa...

Examples

Embodiment 1

[0031] The process of preparing an aluminum foam sandwich panel with a total thickness of 29mm, a panel thickness of 2.5mm, and a foam aluminum core layer thickness of 24mm is as follows:

[0032] (1) Weigh 139.3g of Al-11Si alloy powder with a particle size of 150 mesh (density of 2.65g / cm 3 ), particle size is 325 purpose titanium hydride powder 0.7g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 0.5wt% and 99.5%), all packs in the barrel type mixing tank, mixes 8 on the mixer Hours, made into mixed powder;

[0033] (2) Weigh two portions of 3003Al alloy powder with a particle size of 150 mesh, each 90g (density 2.73g / cm3 ), the total weight of the powder (i.e. the total weight of the sandwich panel sample) 320g;

[0034] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height). 90g of 3003Al alloy powder, 140g of mixed powder and 90g o...

Embodiment 2

[0039] The process of preparing an aluminum foam sandwich panel with a total thickness of 10.6mm, a panel thickness of 0.8mm, and a foam aluminum core layer thickness of 9mm is as follows:

[0040] (1) Weigh 261.1g of Al-10Si-0.5Mg alloy powder with a particle size of 150 mesh (density of 2.65g / cm 3 ), particle size is 325 purpose titanium hydride powder 1.3g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 0.5wt% and 99.5%), all packs in the barrel type mixing tank, mixes 8 on the mixer Hours, made into mixed powder;

[0041] (2) Take two parts of particle size respectively and be 118.8g each of pure aluminum powder of 150 mesh (density is 2.7g / cm 3 ). The total weight of the powder (i.e. the total weight of the sandwich panel sample) is 500g;

[0042] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height), and 118.8g of pure aluminum ...

Embodiment 3

[0047] The process of preparing an aluminum foam sandwich panel with a total thickness of 40mm, a panel thickness of 3mm, and a foam aluminum core layer thickness of 34mm is as follows:

[0048] (1) Weigh 400g of 6061Al alloy powder with a particle size of 150 meshes (density of 2.7g / cm 3 ), particle size is 325 purpose titanium hydride powder 4g, makes the massfraction of titanium hydride powder and aluminum alloy powder be respectively 1.0wt% and 99%), all packs in the barrel type mixing tank, mixes 16 hours on the mixer , made into mixed powder;

[0049] (2) Weigh two parts of Ti-6Al-4V alloy powder with a particle size of 150 meshes, each 292g (density is 4.43g / cm 3 ). The total weight of the powder (i.e. the total weight of the sandwich panel sample) is 988g;

[0050] (3) Made of heat-resistant stainless steel figure 1 For the mold shown, the cavity size of the mold is 55mm (width) × 200mm (length) × 150mm (height), and 292g of Ti-6Al-4V alloy powder, 404g of mixed po...

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