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

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...