A 3D printing method and system for refractory metal parts

Abstract

The invention relates to a three-dimensional printing method and a system of a refractory metal component. The method comprises the following steps: S1, building a three-dimensional model of the component, generating a multilayer sliced file and inputting the multilayer sliced file into a computer; S2, starting a chemical gaseous phase reaction device, feeding a precursor containing refractory metal elements into a high-temperature plane base station through a nozzle under the action of a carrier gas, wherein the precursor is decomposed under the action of the high temperature plane base station, and the refractory metal is deposited on the high temperature plane base station; S3, controlling the high temperature plane base station to move by the computer according to the multilayer sliced file, thereby realizing the dispersion-deposition of the refractory metal and forming the refractory metal component. The system comprises the chemical gaseous phase reaction device, the high temperature plane base station, a carrier gas input device, the nozzle and the computer which controls the high temperature plane base station to move according to the multilayer sliced file of the refractory metal; the chemical gaseous phase reaction device is communicated with the carrier gas input device and is connected with the nozzle, and the nozzle faces the high temperature plane base station. The method and the system are low in energy consumption and are suitable for producing the refractory metal components in various complex shapes.

Description

technical field [0001] The invention relates to 3D printing technology, in particular to a 3D printing method and system for refractory metal parts. Background technique [0002] 3D printing is a type of rapid prototyping technology, which is based on digital model files and builds objects by accumulating materials layer by layer. Common materials for 3D printing include polymer materials, metals, and ceramics. Among them, polymer materials are the easiest materials to realize 3D printing due to their low melting point or photocurable properties. For metals, the realization of layer-by-layer accumulation requires that the metal powder can be melted or sintered. Generally, metals with lower melting points are easier to 3D print, such as aluminum alloys. Titanium alloys, stainless steel, etc., metals with a melting point of more than 1500°C require high power density laser beams or electron beams to achieve 3D printing. However, refractory metals with high melting points (&...

AI Technical Summary

Problems solved by technology

However, refractory metals with high melting points (>1800°C), such as zirconium, molybdenum, tungsten, rhenium, etc., are difficult to achieve 3D printing

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