A kind of preparation method of metal porous material

A technology of porous metal and metal powder, which is applied in the field of preparation of porous metal materials, can solve problems such as difficult forming and powder removal, and achieve the effect of improving mechanical properties

Active Publication Date: 2017-04-26
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, metal porous materials with a variety of pore structures have been prepared by additive manufacturing methods. However, this method is mostly used to prepare millimeter-scale pores, and there are certain limitations in directly forming micron-scale pores. The remaining powder needs to be blown out with high-pressure gas. If the pore size is small, it will be difficult to remove the powder, and the method itself is difficult to form pores as small as microns.

Method used

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  • A kind of preparation method of metal porous material
  • A kind of preparation method of metal porous material
  • A kind of preparation method of metal porous material

Examples

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Embodiment 1

[0032] The material of the metal porous material to be prepared in this embodiment is NiCr alloy, and the specific specification is 30mm (length) × 30mm (width) × 3mm (height). The porous sintered body inside the entire three-dimensional grid structure of the frame, the grid size of the three-dimensional grid structure is 1mm×1mm×1mm, the average pore diameter of the micropores in the porous sintered body is about 30 μm to 100 μm, the metal Porous materials can be applied to gas-solid separation materials.

[0033] The three-dimensional solid model of the metal porous material to be prepared in this embodiment is as follows figure 1 Shown, its specific preparation method comprises the following steps:

[0034] Step 1, according to the shape and size of the frame in the metal porous material to be prepared, use a three-dimensional modeling software to establish a three-dimensional solid model of the frame in a computer; the three-dimensional modeling software is preferably Aut...

Embodiment 2

[0041] The material of the metal porous material to be prepared in this embodiment is NiCr alloy, and the specific specification is 30mm (length) × 30mm (width) × 3mm (height). The porous sintered body inside part of the three-dimensional grid structure in the frame, wherein the height of the frame with the porous sintered body nested inside the three-dimensional grid structure accounts for 1 / 4 of the total height of the frame, and the grid size of the three-dimensional grid structure is 1mm × 1 mm × 1 mm, the average pore diameter of the micropores in the porous sintered body is about 30 μm to 100 μm, and the metal porous material can be applied to filter materials.

[0042] The three-dimensional solid model of the metal porous material to be prepared in this embodiment is as follows Figure 4 Shown, its specific preparation method comprises the following steps:

[0043] Step 1, according to the shape and size of the frame in the metal porous material to be prepared, use a t...

Embodiment 3

[0050] The material of the metal porous material to be prepared in this embodiment is Ti-6Al-4V alloy, and the specific specification is 100mm (length) × 70mm (width) × 20mm (height). The metal porous material includes a frame with a three-dimensional grid structure and A porous sintered body nested inside a part of the three-dimensional grid structure of the frame, the grid size of the three-dimensional grid structure is 0.5mm×0.5mm×0.5mm and 1mm×1mm×1mm from top to bottom, wherein A porous sintered body is nested inside a three-dimensional grid structure with a grid size of 0.5mm×0.5mm×0.5mm. The average pore diameter of the micropores in the porous sintered body is about 30 μm to 100 μm. This metal porous material can be applied to resistance combustible material.

[0051] The three-dimensional solid model of the metal porous material to be prepared in this embodiment is as follows Figure 5 Shown, its specific preparation method comprises the following steps:

[0052] St...

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Abstract

The invention discloses a preparation method of a metal porous material. The metal porous material comprises a framework with a three-dimensional grid structure and a porous sintering body embedded in the three-dimensional grid structure. The preparation method of the metal porous material comprises the following steps: step one, building a three-dimensional entity model of the framework; step two, slicing to obtain two-dimensional sliced layers; step three, introducing data of the two-dimensional sliced layers into a rapid forming machine, and preparing the framework of the metal porous material by using a material increase manufacturing method; and step four, sintering at high temperature and preparing the porous sintering body to obtain the metal porous material. The metal porous material prepared by combining the material increase manufacturing method with the high-temperature sintering process comprises the framework with the three-dimensional grid structure and the porous sintering body embedded in the three-dimensional grid structure; the method exerts the advantages of two preparation processes and can prepare the high-strength structural metal porous material which meets various special requirements.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a method for preparing a metal porous material. Background technique [0002] The structural characteristics of metal porous materials make them have the characteristics of structural materials and functional materials at the same time. As a structural material, it has the characteristics of light weight, high specific strength, and high specific stiffness. As a functional material, it has multiple functions such as damping, sound absorption, heat dissipation, energy absorption, electromagnetic shielding, and flame retardancy. , Surface combustion, fluidized gas distribution, shock absorption and noise reduction, phase conversion heat and other fields have a wide range of application values, and how to make the metal porous structure better meet the use requirements through the design of the pore structure is an eternal issue in the field of metal p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08
Inventor 汤慧萍杨广宇贾亮刘楠
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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