【摘要】 目前,我国3D打印材料市场规模已达到30亿元,其中钛合金占比最大,达到了20%。3D打印钛合金零件被广泛应用于航空航天、核工业、医疗器械及运动器材等领域。钛合金粉末作为3D打印钛合金零件的重要金属材料,其性能(包括氧含量、纯净度、球形度、粉末粒径、粉体密度等)直接影响到3D打印钛合金零件的成型性能,3D打印钛粉的制备技术及工艺已成为国内外开发和研究的热点。首先详细介绍了制备球形钛粉的主要方法,包括雾化法(气雾化、离心雾化、等离子雾化)、球化法(激光球化、等离子球化)、造粒烧结脱氧法,同时综述了国内外研究现状;接着对球形钛粉制备技术进行了比较,认为造粒烧结法因制粉成本低廉而具有很大的发展前景;最后对球形钛粉制备技术的发展趋势进行了展望。更多还原

【Abstract】 At present,the market scale of 3 D printing materials in China has reached 3 billion RMB,of which titanium alloy accounts for the largest proportion,reaching 20%. 3 D printed titanium alloy parts are widely used in aerospace,nuclear industry,medical devices,sports equipment and other fields. Titanium alloy powder is an important metal material for 3 D printing titanium alloy parts. Its properties( including oxygen content,purity,spheroidization,powder particle size,powder density,etc.) directly affect the molding performance of 3 D printed titanium alloy parts. The preparation technology and process of titanium powder have become a hot spot of development and research at home and abroad. Firstly,the main methods of preparing spherical titanium powder were introduced in detail,including atomization( gas atomization,centrifugal atomization,plasma atomization),spheroidization( laser spheroidization,plasma spheroidization),granulation-sintering-deoxygenation,and the current research status at home and abroad was summarized. Then the preparation technologies were compared,and it is considered that the granulation-sintering-deoxygenation method has a great prospect because of the low cost of powder production. Finally,the preparation technology of spherical titanium powder is prospected.更多还原