Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of spherical through hole foamed aluminium

A technology of through-cell aluminum foam and spherical shape is applied in the field of preparation of spherical-pore through-cell aluminum foam, which can solve the problems of performance repeatability and reproducibility to be improved, complex internal structure, low stability, etc., and achieve repeatability. and good reproducibility, reliability and low cost

Inactive Publication Date: 2013-10-09
JILIN UNIV
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most common hole shape in through-hole aluminum foam is irregular polygon. The process is to use polygonal particles (usually sodium chloride particles) as the prefabricated material, and finally obtain irregular polygonal holes. The characteristic through-hole foamed aluminum has a very complex internal structure, and the repeatability and reproducibility of performance need to be improved, resulting in low stability of the material in actual service

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of spherical through hole foamed aluminium
  • Preparation method of spherical through hole foamed aluminium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Step 1, selecting spherical calcium chloride as the prefabricated body material, screening the spherical calcium chloride through screens with different apertures, and selecting spherical calcium chloride with a particle size of 0.3mm for use;

[0018] Step 2: Put spherical calcium chloride particles with a particle size of 0.3mm into the mold, first preheat at 260°C-350°C for 20-60 minutes, then adjust the temperature to 580°C-650°C, at this temperature heating while exerting pressure on the particles;

[0019] Step 2: Heat the metal aluminum and aluminum alloy materials to 680-740°C, melt them into a liquid state, pour the molten aluminum into a mold filled with calcium chloride particles, and then apply a pressure of 10MPa to hydraulically inject the aluminum into the calcium chloride particle prefabricated body , forming aluminum-calcium chloride complexes;

[0020] Step 4, after the complex is solidified, the spherical calcium chloride particles are dissolved with...

Embodiment 2

[0022] Step 1, selecting spherical calcium chloride as the prefabricated material, screening the spherical calcium chloride through screens with different apertures, and selecting spherical calcium chloride with a particle size of 1 mm for use.

[0023] Step 2: Put spherical calcium chloride particles with a particle size of 1 mm into the mold, first preheat at 260°C-350°C for 20 minutes-60 minutes, then adjust the temperature to 580°C-650°C, and heat at this temperature, Simultaneously exert pressure on the particles.

[0024] Step 3: Heat up the metal aluminum and aluminum alloy materials to 680-740°C, melt them into a liquid state, pour the aluminum liquid into a mold containing calcium chloride particles, and then apply 8MPa pressure to hydraulically inject the aluminum into the calcium chloride particle prefabricated body , forming aluminum-calcium chloride complexes;

[0025] Step 4, after the complex is solidified, the spherical calcium chloride particles are dissolved...

Embodiment 3

[0027] Step 1, selecting spherical calcium chloride as the prefabricated body material, screening the spherical calcium chloride through screens with different apertures, and selecting spherical calcium chloride with a particle size of 5 mm for use;

[0028] Step 2: Put spherical calcium chloride particles with a particle size of 5mm into the mold, first preheat at 260°C-350°C for 20-60 minutes, then adjust the temperature to 580°C-650°C, and heat at this temperature , while exerting pressure on the particle.

[0029] Step 3: Heat the metal aluminum and aluminum alloy materials to 680-740°C, melt them into a liquid state, pour the molten aluminum into a mold filled with calcium chloride particles, and then apply a pressure of 4MPa to hydraulically inject the aluminum into the calcium chloride particle prefabricated body , forming aluminum-calcium chloride complexes;

[0030] Step 4, after the complex is solidified, the spherical calcium chloride particles are dissolved with w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of spherical through hole foamed aluminium. The preparation method of spherical through hole foamed aluminium comprises the following steps of: firstly, selecting spherical calcium chloride particles as a preform material, and screening by virtue of a screen to obtain spherical calcium chloride particles with uniform size and different particle sizes; secondly, filling the screened spherical calcium chloride particles into a mould, firstly preheating for 20-60 minutes at the temperature of 260-350 DEG C, then increasing the temperature to 580-650 DEG C and heating, and pressurizing the particles, wherein heating time and pressurization are set according to the porosity requirement of a product; and thirdly, heating metallic aluminium to 680-740 DEG C, melting the metallic aluminium into molten aluminium and then pouring the molten aluminium into a mould, and then applying a pressure to press the molten aluminium into a calcium chloride particle preform to form an aluminium-calcium chloride complex. The prepared foamed aluminium has the advantages of controllable hole shape (spherical) and adjustable aperture size, porosity can be designed according to the using requirement, performance is stable, a process is simple, and industrialization can be facilitated.

Description

Technical field: [0001] The invention relates to a method for preparing spherical through-hole foamed aluminum. Background technique: [0002] Porous aluminum foam is a material with integrated structure and function. It has high specific strength, specific stiffness, good energy absorption characteristics, damping performance, and sound absorption performance. Therefore, it is widely used in transportation, aerospace, machinery, packaging and other industries. Has a wide range of uses. [0003] Porous aluminum foam can be divided into two categories: through-cell aluminum foam (also known as open-cell aluminum foam) and closed-cell aluminum foam. According to the shape of the hole, the porous aluminum foam can be divided into: spherical, regular polyhedral and polygonal holes. At present, the most common hole shape in through-hole aluminum foam is irregular polygon. The process is to use polygonal particles (usually sodium chloride particles) as the prefabricated material...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08
Inventor 刘家安高飞刘耀辉朱先勇
Owner JILIN UNIV