Aluminum powder for 3D (three-dimensional) printing and preparation method of aluminum powder

A 3D printing, aluminum powder technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of coarse particle size, uneven distribution, and high melting temperature of metal powder, and achieve high fluidity, uniform melting, and low melting temperature. Effect

Active Publication Date: 2015-06-03
NANTONG JINYUAN INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of coarse particle size, uneven distribution, high oxygen content and high melti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Put metal aluminum with a purity of more than 99.5% in a vacuum furnace, and after melting at 680°C, add white carbon black into the vacuum furnace according to the mass ratio of white carbon black and aluminum as 1:300, and maintain the vacuum at 50rpm Disperse the white carbon black and the molten aluminum for 5 minutes at a high speed, so that the molten aluminum stays in the porous spaces of the white carbon black;

[0025] 2) After cooling the molten aluminum-silica composite obtained in step 1), grind it under the protection of argon, and use the pore size of 100-150nm silica as the isolation film for aluminum powder granulation, which is not only easy to grind, pulverize and disperse , and the obtained aluminum powder has uniform particle size distribution and low oxygen content;

[0026] 3) Add 100 parts by weight of the aluminum powder obtained in step 2) and 0.5 parts by weight of acrylate to the reaction mixer, raise the temperature to 80°C, stir and dispe...

Embodiment 2

[0030] 1) Put metal aluminum with a purity of more than 99.5% in a vacuum furnace, and after melting at 680°C, add white carbon black into the vacuum furnace according to the mass ratio of white carbon black and aluminum as 1:400, and maintain the vacuum at 100rpm Disperse the white carbon black and the molten aluminum for 5 minutes at a high speed, so that the molten aluminum stays in the porous spaces of the white carbon black;

[0031] 2) After cooling the molten aluminum-silica composite obtained in step 1), grind it under the protection of argon, and use the pore size of 100-150nm silica as the isolation film for aluminum powder granulation, which is not only easy to grind, pulverize and disperse , and the obtained aluminum powder has uniform particle size distribution and low oxygen content;

[0032]3) Add 100 parts by weight of the aluminum powder obtained in step 2) and 0.5 parts by weight of methacrylate into the reaction mixer, raise the temperature to 80°C, stir and...

Embodiment 3

[0036] 1) Put metal aluminum with a purity of more than 99.5% in a vacuum furnace. After melting at 680°C, add white carbon black into the vacuum furnace according to the mass ratio of white carbon black and aluminum at 1:500, and maintain the vacuum at 80rpm Disperse the silica and molten aluminum for 3-5 minutes at a high speed, so that the molten aluminum stays in the porous voids of the silica;

[0037] 2) After cooling the molten aluminum-silica composite obtained in step 1), grind it under the protection of argon, and use the pore size of 100-150nm silica as the isolation film for aluminum powder granulation, which is not only easy to grind, pulverize and disperse , and the obtained aluminum powder has uniform particle size distribution and low oxygen content;

[0038] 3) Add 100 parts by weight of the aluminum powder obtained in step 2) and 0.5 parts by weight of styrene into the reaction mixer, raise the temperature to 100°C, stir and disperse at a high speed of 400 rp...

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Abstract

The invention provides aluminum powder for 3D (three-dimensional) printing. In the aluminum powder, white carbon black serves as a carrier. A preparation method of the aluminum powder comprises the following steps of fusing aluminum at the temperature of 680 DEG C in a vacuum environment; staying the fused aluminum in gaps of the white carbon black; and performing argon protecting grinding on the fused aluminum to form spherical aluminum powder of which the average grain diameter is 50-100 nanometers and the degree of sphericity is above 0.75. Monomers wrap the surface of the aluminum powder in a gathered manner, so that the oxygen content of the spherical aluminum powder is reduced; and influences of aluminum oxide on fusion of the aluminum are avoided, the fusing temperature of the obtained aluminum powder is low, the aluminum powder is fused uniformly, tissues in metal are uniform when the aluminum powder is used for 3D printing, the forming precision of products is improved, and the aluminum powder can be used for preparing precise metal products of complicated components.

Description

technical field [0001] The invention belongs to the field of 3D printing manufacturing, and in particular relates to an aluminum powder used for 3D printing manufacturing, and further relates to a preparation method of the aluminum powder. Background technique [0002] 3D printing technology is a rapid additive manufacturing technology that generates three-dimensional entities by increasing the accumulation of materials layer by layer. It not only overcomes the loss caused by traditional subtractive manufacturing, but also makes product manufacturing more intelligent, more accurate and more efficient. Especially when it comes to high-end manufacturing of complex shapes, 3D printing technology shows great advantages. 3D printing technology is a high-tech manufacturing technology with industrial revolution significance. It represents a new trend in the development of the world's manufacturing industry and plays an important leading role in accelerating the development of advan...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/04B22F1/102
CPCB22F9/04B22F1/102
Inventor 陈庆曾军堂
Owner NANTONG JINYUAN INTELLIGENT TECH CO LTD
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