Stacking forming method based on nanofluid droplet solidification

Abstract

The invention relates to a stacking forming method based on nanofluid droplet solidification. The stacking forming method based on nanofluid droplet solidification is carried out by adopting a stacking forming device and specifically comprises the following steps of: (1) preparing nanofluid suspension; (2) enabling an injection unit to suck nanofluid, dropping the nanofluid on a bearing bottom plate with the set supercooling degree drop by drop, pushing the solidification face from the bottom face of a liquid drop to the top, and after complete solidification, enabling nanoparticles to move along with compensation flow and densely stacking the nanoparticles to the top face to form a smooth platform; and (3) after the previous liquid drop is solidified, continuously placing the liquid drop at the center of a platform to form a second cylinder or circular platform, and repeating the steps to stack the cylinder. According to the stacking forming method based on nanofluid droplet solidification, a platform structure is generated at the top of the solidified liquid drop by utilizing the characteristic deformation in the solidification process of the nano-fluid liquid drop, and a cylindrical or tower-shaped structure with a large height-diameter ratio is prepared through one-time forming by utilizing a stacking principle. The stacking structure of the nanofluid droplets is stable and controllable, and the accuracy is higher.

Description

technical field [0001] The invention relates to the field of droplet solidification forming, in particular to a stack forming method based on nanofluid droplet solidification. Background technique [0002] Nanofluids usually refer to liquids that suspend nanoscale solid particles. They are small in size, light in weight, and have good thermal conductivity. Widely used in energy, chemical, material fields. When the traditional 3D printing technology processes linear parts, it is often due to material limitations and fragile structures, which cannot be maintained for a long time and cannot be used in industrial processes. Or when stacking columnar structures, the surface is also relatively rough. The use of conventional droplets for solidification and stacking is subject to the following limitations: 1) A single droplet is spherical under the influence of surface tension, and it is also a single spherical shape after solidification without increasing external conditions. 2)...

AI Technical Summary

Problems solved by technology

The use of conventional droplets for solidification and stacking will be subject to the following limitations: 1) A single droplet is spherical under the influence of surface tension, and it is also a single spherical shape after solidification without adding external conditions

2) Continue to drop droplets on the surface of spherical solidified droplets. The degree of supercooling is sufficient. Assuming that it will not roll off, the drop position cannot be accurately determined. Even after solidification, gaps will occur, which affects the mechanical strength and air tightness of the material.

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