Metal component 3D printing device and method under microgravity environment

Abstract

The invention discloses a metal component 3D printing device and method in a microgravity environment, a sealed forming cavity structure is adopted, a metal smelting unit is mounted at the top in a sealed forming cavity, a printing nozzle of the metal smelting unit is located in the sealed forming cavity, and a translation table and a graph acquisition device are arranged in the sealed forming cavity; a sealing forming cavity is used for forming a printing sealing cavity, a cooling device is arranged in the sealing forming cavity to form a cooling circulation mechanism, a metal smelting unit 14 is used for melting metal, a translation table is used for moving, spreading forming is conducted on molten metal molten by a printing spray head, and meanwhile the cooling device below the printing spray head is used for cooling. According to the metal forming device, reverse forming is achieved through movement of the translation table, the problem that liquid freely moves due to movement of a printing spray head is solved, metal forming printing under the microgravity environment can be achieved, meanwhile, the influence of the gas heat convection phenomenon on a forming area is avoided, and the printing precision is improved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printing device and method for metal components in a microgravity environment. Background technique [0002] With the development of aerospace technology, human beings are gradually exploring more distant space, so the maintenance of aerospace equipment and the replacement and maintenance of damaged parts are more important. The damaged parts of the spacecraft and the International Space Station need to be manufactured from the earth, and then launched into space by the carrier rocket, and then the astronauts will repair or replace the damaged parts; for complex and precise parts or experimental instruments, the vibration during the launch process It will adversely affect its accuracy, performance, etc. Therefore, scientists from all over the world have proposed the in-orbit manufacturing of parts and even precision instruments. [0003] 3D printing (3DP) is rapid prot...

AI Technical Summary

Problems solved by technology

The biggest challenge of 3D printing in space lies in its microgravity. In the microgravity environment of space, the deposition phenomenon caused by density difference and the convection phenomenon caused by gravity almost disappear; different, the heat convection phenomenon of the gas will also fail

Due to these limiting factors, existing 3D printers cannot be directly applied in the field of space 3D printing, and cannot effectively realize microgravity vacuum molding.

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