Hollow aluminum alloy microsphere preparation device and preparation method

A preparation device and aluminum alloy technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of incompleteness, complex process, complex physical and chemical reactions, etc., and achieve the effect of short production process, simple process and low cost

Active Publication Date: 2019-03-26
BEIJING COMPO ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to add a reaction template to the raw material. There are complex physical and chemical reactions in the preparation process, and the process is complicated, and the removal of the template is difficult or incomplete. A multi-layer core-shell structure is often formed. Physical properties are difficult to be fully utilized
[0005] In summary, in order to obtain better performance, the preparation of foamed aluminum alloys requires small pores and uniform distribution. When the cell size of foamed aluminum alloys is reduced and evenly distributed, the secondary processability of foamed aluminum alloys will be effectively improved. At the same time, its The mechanical properties will also be greatly improved. However, the current preparation methods of foamed aluminum alloys cannot effectively control the size and distribution of pores.

Method used

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  • Hollow aluminum alloy microsphere preparation device and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Heat and melt the A356 aluminum alloy to 680℃, and add Al with a particle size of 5μm that has been preheated at 400℃ for 2h 2 O 3 Particles, Al 2 O 3 The amount of particles added is 10vol%, and mechanical stirring is carried out to the added Al 2 O 3 The particles are uniformly dispersed in the melt, and the obtained aluminum alloy melt is used in the subsequent preparation process.

[0053] The sealed shell 1 is evacuated and filled with argon as a protective gas. When the temperature of the aluminum alloy melt is 680°C, it is fed into the hollow cavity 21 through the liquid inlet pipe 3, so that the hollow cavity 21 is filled with the aluminum alloy melt. Adjust the vibrator 6 to adjust the vibration frequency of the blowing head 4 to 100 Hz. At the same time, argon is blown into the blowing head 4 through the air inlet pipe 5 at a flow rate of 15 mL / min, and the argon is blown to the aluminum through the blowing head 4. On the surface of the alloy melt, hollow aluminum...

Embodiment 2

[0057] Heat and melt pure aluminum to 750°C, and add TiO with a particle size of 5μm that has been preheated at 400°C for 2 hours 2 Particles, TiO 2 The added amount of particles is 8vol%, and mechanically stir until the added TiO 2 The particles are uniformly dispersed in the melt, and the obtained aluminum alloy melt is used in the subsequent preparation process.

[0058] The sealed shell 1 is evacuated and filled with argon as a protective gas. When the temperature of the aluminum alloy melt is 680°C, it is fed into the hollow cavity 21 through the liquid inlet pipe 3, so that the hollow cavity 21 is filled with the aluminum alloy melt. Adjust the vibrator 6 to adjust the vibration frequency of the blowing head 4 to 150 Hz. At the same time, argon is introduced into the blowing head 4 through the air inlet pipe 5 at a flow rate of 10 mL / min, and the argon is blown to the aluminum through the blowing head 4. On the surface of the alloy melt, hollow aluminum alloy microspheres ar...

Embodiment 3

[0062] Heat and melt the A356 aluminum alloy to 700°C, add CuO particles with a particle size of 10μm that have been preheated at 400°C for 2 hours. The addition amount of CuO particles is 5vol%, and mechanically stir until the added CuO particles are evenly dispersed in the melt. The obtained aluminum alloy melt is used in the subsequent preparation process.

[0063] The sealed shell 1 is evacuated and filled with helium gas as a protective gas. When the temperature of the aluminum alloy melt is 680°C, it is fed into the hollow cavity 21 through the liquid inlet pipe 3, so that the hollow cavity 21 is filled with the aluminum alloy melt. Adjust the vibrator 6 to adjust the vibration frequency of the blowing head 4 to 90 Hz. At the same time, nitrogen is blown into the blowing head 4 through the air inlet pipe 5 at a flow rate of 20 mL / min, and the nitrogen is blown to the aluminum alloy through the blowing head 4. On the surface of the body, hollow aluminum alloy microspheres ar...

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Abstract

The invention relates to a hollow aluminum alloy microsphere preparation device and a preparation method. The hollow aluminum alloy microsphere preparation device comprises a sealed shell, a crucible,an air blowing device and a vibrator, wherein the air blowing device comprises air blowing heads; the crucible is of a grooved structure with a hollow accommodating cavity in the side wall, and the hollow accommodating cavity is used for accommodating aluminum alloy melts; and hollow aluminum alloy microspheres are prepared through air blowing of the air blowing heads. By adjusting the gas flow rate and vibration frequency, the particle sizes of the microspheres can be effectively adjusted and controlled, so that the particle sizes of the prepared hollow aluminum alloy microspheres are smalland uniform; and furthermore, by controlling the particle sizes of the hollow aluminum alloy microspheres, the air hole size and distribution in foamed aluminum alloy can be controlled, so that the foamed aluminum alloy with small hole bubbles and uniform distribution are obtained. By adopting the preparation method of the device, the process is simple, no reaction template is required, the production process is short, and the cost is low.

Description

Technical field [0001] The invention belongs to the field of metal material processing, and specifically relates to a preparation device and a preparation method of hollow aluminum alloy microspheres. Background technique [0002] Foamed aluminum alloy is made by adding additives to pure aluminum or aluminum alloy through a foaming process. It is a new type of structural functional material. As a structural material, it has the characteristics of light weight and high specific strength; as a functional material, it has a variety of physical properties such as sound insulation and noise reduction, heat insulation, flame retardancy, shock absorption, impact energy absorption, and electromagnetic shielding. These excellent properties of foamed aluminum alloy make it have broad application prospects in today's material fields, especially in metallurgy, machinery, transportation, aerospace, chemical industry, electronic communication, construction, armaments and automobiles. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/06B22F3/11B22F1/00B22F3/02B22F3/10C22C21/00C22C21/02C22C1/08
CPCC22C21/003C22C21/02B22F3/02B22F3/1007B22F3/1112B22F9/06B22F2009/065B22F1/0655
Inventor 贺会军徐蕾王志刚胡强张富文赵新明朱学新刘英杰刘建
Owner BEIJING COMPO ADVANCED TECH
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