Preparation method of plasma spheroidizing deoxidation 3D printing metal powder

Abstract

The invention discloses a preparation method of plasma and deoxidizing 3D printing metal powder. The method comprises the following steps that, metal powder particles which are basically consistent in particle size and irregular in appearance are heated and melted through high-frequency induction plasma to form metal micro-droplets, carbon monoxide gas is sprayed to the metal micro-droplets in the falling process of the metal micro-droplets, and oxygen atoms in the metal micro-droplets and carbon monoxide molecules are subjected to a chemical reaction to generate carbon dioxide, and therefore, the content of oxygen in the metal micro-droplets is reduced, and 3D printing metal powder with basically consistent particle size is obtained through rapid condensation. The 3D printing metal powder prepared by the method is good in fluidity, low in oxygen content, uniform in particle size and free of hollowness, and the device is suitable for large-scale preparation of high-quality 3D printing metal powder.

Description

technical field [0001] The invention belongs to the technical field of 3D printing metal powder preparation, in particular to a preparation method of plasma spheroidization deoxidation 3D printing metal powder. Background technique [0002] In recent years, with the rapid development of additive manufacturing technology at home and abroad, processing methods, equipment, and technologies are constantly being innovated and optimized. The improvement of raw material quality and performance has become an important step to promote the progress of additive manufacturing. The requirements of related processes for metal powder materials It is also becoming more and more demanding, not only requiring metal powder to have excellent sphericity and particle size distribution to ensure good fluidity during processing, but also requiring powder to have high purity and low oxygen content. Common metal materials for additive manufacturing include iron-based alloys, titanium-based alloys, ni...

AI Technical Summary

Problems solved by technology

[0010]Aiming at the serious problems of high oxygen content, poor fluidity and high hollow rate in the traditional 3D printing metal powder preparation method, the inventor invented the plasma spheroidization deoxidation 3D Printing metal powder preparation method, the present invention adopts the following technical solutions:

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