Micro grain moulding device based on 3D printing and method thereof

Abstract

The invention discloses a micro grain moulding device based on 3D printing and a method thereof. Based on the characteristic that ignition points of some energetic materials are higher than a melting point of 15 DEG C, powdered energetic material is placed in a printer sprayer heating chamber to be heated to be molten, shielding gas is slowly introduced into the heating chamber, and when air pressure in the heating chamber is 0.1-0.2MPa higher than the air pressure in a sealed cabin outside a nozzle, the molten energetic material in the heating chamber flows out by virtue of the nozzle at a certain speed. As the diameter of the nozzle is very small and temperature in the sealed cabin is lower than the melting point of the energetic material, liquid energetic material is quickly solidified at a specified position of a printer sprayer, and a micro grain in a designed shape is printed on a substrate by controlling a three-dimensional motion control platform connected with a control rod. The micro grain moulding device and the method thereof control the outflow of the liquid energetic material by virtue of pressure difference and have the characteristics of simple structure, convenience in realization and low cost; and less time is consumed from designing until printing is completed, so that a processing technological process is simple.

Description

technical field [0001] The present invention relates to the technical field of aerospace micro-propellants, in particular to a 3D printing-based micro-powder forming device and a method thereof. Background technique [0002] With the increasing number of space missions, various countries have an increasing demand for the development of satellites for space missions; among many satellites, the development of microsatellites has incomparable advantages, such as small size, light weight, short development cycle, launch The cost is low, and multiple tiny satellites can fly in formation to complete tasks that are difficult for large satellites. Compared with large satellites, micro-satellites need a micro-propulsion system that can provide them with more accurate attitude, orbit adjustment and position maintenance. In the micro-propulsion system, due to the advantages of low cost, small size, light weight and high integration, based on The micro-propulsion system of MEMS technol...

AI Technical Summary

Problems solved by technology

However, since the photoinitiator or photosensitive resin needs to occupy a certain proportion in the formulation of the energetic ink, the proportion of the energetic material in the formed micropowder column is reduced, and the addition of the powdery energetic material also has a great impact on the molding accuracy.

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