Preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing

Abstract

The invention discloses a preparation method of fine-particle spherical titanium powder for three-dimensional (3D) printing and belongs to the technical field of preparation of metal powder. The method comprises the following steps: firstly, by using a high-purity titanium block material as a raw material, performing arc evaporation under an inert gas environment, and meanwhile, charging hydrogen to synthesize titanium hydride nano powder through a gas-phase reaction; secondly, agglomerating and granulating the titanium hydride nano powder to obtain micron-sized titanium hydride powder with higher density; finally, performing heat treatment on the granulated micron-sized titanium hydride powder, and performing degumming, dehydrogenation and compacted consolidation to obtain pure-titanium powder particles of which the particle size, the sphericity and the fluidity meet a 3D printing requirement. According to the method, the sphericity and the particle size distribution of the titanium powder particles are highly controlled; the process is simple, and the cost is low; metal titanium with great activity is stabilized in a new way of generating oxidation-resistant titanium hydride nano powder particles firstly, and the content of oxygen in the titanium powder particles which are finally prepared can be controlled.

Description

technical field

[0001] The invention relates to a method for preparing fine particle spherical titanium powder for 3D printing, belonging to the technical field of metal powder preparation. Background technique

[0002] 3D printing technology is especially suitable for the development of high value-added complex structural products, personalized customization and verification of design and R&D before mass production. Compared with the current international advanced level, my country still has a big gap in the research and development of forming materials required for 3D printing. At present, the material design and preparation process mainly follow the foreign progress. In terms of forming material products for 3D printing, the fine-grained spherical titanium and titanium alloy powder needed in China are almost completely dependent on imports. The lack of high-quality forming materials for 3D printing is one of the bottleneck factors restricting the promotion and applicatio...

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