Solid 3D printing system for space component in-orbit manufacturing and repairing by using cold spraying and method

Abstract

The invention relates to a solid 3D printing system for space component in-orbit manufacturing and repairing by using cold spraying and a method. The data information of a temperature sensor, a pressure sensor, a distance sensor and a flowmeter are all transmitted to a computer terminal, the computer terminal gives a control instruction according to the three-dimensional data, a three-dimensionalmobile platform is controlled by a three-dimensional mobile platform control chip, a matrix or a substrate moves according to the design path, and meanwhile, a valve and a heater are controlled according to the data of the temperature sensor, the pressure sensor and the flowmeter, so as to adjust the process parameters. The system and the method have the advantages that in the space environment, the problem that a melting state 3D printing technology is difficult to effectively combine under the weight loss condition is solved. In the system and method, powder has extremely high speed and accurate direction, and the kinetic energy generated by means of acceleration of gas through a Laval nozzle makes metallics completely overcome the weight loss environment in the space.

Description

technical field [0001] The invention belongs to the field of space 3D printing technology, and relates to a solid-state 3D printing system and method for on-orbit manufacturing and repair of space components by cold spraying. After using computer modeling and slicing layer by layer, the preheated spray powder shrinks and expands Accelerated in the Laval nozzle to obtain kinetic energy, it is deposited on the substrate according to the specified path to realize the manufacture or repair of metal components. The powder particles are always in the solid state during the deposition process, which is completely different from the high-energy beam state 3D printing technology based on melting-solidification, so it is called solid-state 3D printing technology. Background technique [0002] With the development of human beings in space, the time in orbit and the altitude in orbit are gradually increasing. At present, the equipment required for space exploration and the parts requir...

AI Technical Summary

Problems solved by technology

However, there is a huge difference between the space environment and the ground environment. Ground 3D printing technology cannot adapt to the special environment of space. The realization of space 3D printing faces huge challenges in equipment, technology, materials and other aspects. For example, high temperature melting will cause alloy elements Burning loss, coarse tissue, thermal stress, cracks, and the microgravity environment in space make the molten pool behavior difficult to control, etc., and there are still great difficulties in obtaining high-performance components or repairing

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