High-performance through hole foamed aluminum material and preparation process thereof

A preparation process, foamed aluminum technology, applied in the field of new metal materials and structural metal materials, to achieve good electromagnetic shielding performance, overcome the complexity of the process, and improve the effect of damping

Active Publication Date: 2019-03-15
王楷煌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-performance through-hole foamed aluminum material with energy saving and environmental protection, short process flow, low production cost, high return on investment, better damping and mechanical properties, so as to solve the defects and deficiencies of the existing preparation process

Method used

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  • High-performance through hole foamed aluminum material and preparation process thereof
  • High-performance through hole foamed aluminum material and preparation process thereof
  • High-performance through hole foamed aluminum material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method for a transitional filled spherical material, mainly comprising: weighing 65%-80% gypsum, 15%-20% bauxite, 5%-10% calcium carbonate, 5%-10% Nano-based bentonite, fully mixed in a mixer, granulated by a disc granulator, and 15%-25% water-based glue is added in a uniform spraying manner to make a foamed aluminum transition with a diameter of 2-12mm Permanent filled spheres, drying the filled spheres at 80-120°C for 2-3 hours until the moisture is completely removed, and sieving through a multi-stage rotary sieve to obtain transitional filled sphere materials with required particle sizes.

Embodiment 2

[0031] A preparation process of a high-performance through-hole foamed aluminum material mainly includes the following steps:

[0032]a, by weight, 65%-80% gypsum, 15%-20% bauxite, 5%-10% calcium carbonate, 5%-10% nano-bentonite powder are fully mixed in the mixer Mix evenly, configure 15%-25% water-based glue, and use a disc granulator for granulation; control the diameter of the transitional filling sphere according to the performance requirements of the through-hole foam aluminum material: by controlling the addition of mixed powder and spray glue The speed of the liquid is made into a foamed aluminum transitional filled sphere with a diameter of 2-12mm;

[0033] b. Dry the transitional filled spheres made in the above a. in an oven at 80-120°C for 2-3 hours until the water is completely removed, and sieve through a multi-stage rotary sieve to obtain the required transition particle size. sexually filled sphere;

[0034] c. According to the different performance requireme...

Embodiment 3

[0050] The transitional filling sphere material in Example 2 was replaced by the components of serial numbers 1-8 to prepare aluminum foam materials, and the experimental results are shown in Table 2.

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Abstract

The invention relates to a preparation process of a high-performance through hole foamed aluminum material. The preparation process mainly comprises the steps that prepared transition filling balls are placed into a casting mold, after vibration operation and preheating treatment, the prepared transition filling balls are moved into a negative pressure device, a negative pressure valve is startedto form negative pressure in a mold cavity, molten aluminum alloy molten liquid is cast, and the clearances between the balls are evenly full of the aluminum alloy molten liquid in a penetration manner under the action of negative pressure and heat balance; and after cooling, the mold is demounted, cutting and slicing or modeling processing is carried out, the transition filling balls are clearedaway and removed through production lines of ultrasonic cleaning, high-pressure water cleaning, high-pressure gas cleaning and drying cleaning, three-dimensional through ball-shaped pore cavities aredistributed in an obtained aluminum alloy matrix, and the regular ball-shaped pore cavities are independently and evenly distributed in the matrix, and the ball-shaped pore cavities are connected through through holes. The specific surface area of the matrix is large, and the physical, mechanics and mechanical properties are better on the aspects of damping, energy absorption, sound insulation andnoise reduction, heat insulation, electromagnetic shielding, impacting force resistance, permeability and the like.

Description

technical field [0001] The invention belongs to new metal materials and structural metal materials, in particular to a high-performance through-hole foamed aluminum material and a preparation process thereof. Background technique [0002] Aluminum foam material is a new lightweight metal material, which was invented in the 1980s. So far, developed countries in Europe and the United States and a small number of scientific research institutions and enterprises in my country have developed a variety of production and manufacturing processes, but the products that have formed a certain scale of production are in the use of basic performance, such as sound barriers for sound absorption and noise reduction. [0003] At present, aluminum foam materials are basically divided into two types. One is closed-cell aluminum foam with cavities independently existing in the aluminum or aluminum alloy matrix. At present, all aluminum foam materials in my country are of this type; the other i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/04B22D18/06C22C21/06C22C1/08C04B28/14
CPCB22D18/06B22D23/04C04B28/14C22C1/08C22C21/06C04B14/303C04B14/28C04B14/104
Inventor 王楷煌
Owner 王楷煌
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