Physical system and simulation method for 3D printing of metal droplets in simulated microgravity environment

Abstract

The invention relates to a physical system simulating molten metal droplet 3D printing in a microgravity environment and a printing method. A static electric field generation positive electrode applies a static electric field generation voltage, and a static electric field is generated between two electrodes; and a molten metal spray nozzle is located on one side of the static electric field generation positive electrode. A 3D deposition platform is located at the tail end of the area of the static electric field. When molten melt droplets pass by a charging electrode and then initially enterthe area of the static electric field, the movement direction of the molten melt droplets are in the horizontal state. In the ground environment, through spray of a small bond number of molten melt droplets, accelerated flight (matching of Froude number) and deposition and loading of an antigravity static electric field, physical simulation of the processes of microdroplet spraying, flight and deposition deformation under different microgravity conditions is achieved, and therefore the physical system simulating molten metal droplet 3D printing in the microgravity environment provides an effective means for earlier-stage technology development and later-period formation technology ground verification of the molten metal droplet 3D printing in the microgravity environment.

Description

technical field [0001] The invention belongs to the field of on-orbit additive manufacturing in space, and relates to a physical system and a printing method for 3D printing of metal droplets in a simulated microgravity environment. Background technique [0002] The development of space metal material additive manufacturing (3D printing) technology, to realize the on-site rapid manufacturing and material recycling of tools and parts in space stations and manned space vehicles, and to minimize the dependence on ground supplies in space exploration is the future. A key to long-term manned space exploration missions. Metal parts used in space stations and manned spacecraft, such as connecting rods, brackets, tools and other structural parts, miniature aluminum alloy impellers for space station circulation pumps, and aluminum alloy electronic packages for heat dissipation and shielding functions, etc. Damage will inevitably occur during operation, and it is the main object of d...

AI Technical Summary

Problems solved by technology

Experiments in artificial microgravity environments (such as space stations, manned spacecraft, etc.) (and even simulated microgravity experiments such as drop towers, deep-space rockets, and parabolic flights) are expensive and take a short time to realize, so they are not suitable for long-term preliminary research on microdroplet 3D printing technology ; Existing ground levitation technologies, such as ultrasonic levitation, electrostatic levitation, air levitation, electromagnetic levitation, etc., apply a surface force and volume force to the object to balance its gravity so as to realize the levitation of the object at a certain position

Images