感应等离子体球化法制备球形金属粉体材料的研究进展

Research progress on preparation of spherical metal powders by induction plasma spheroidization

摘要:

原料粉体的质量已经成为制约金属3D打印发展的瓶颈因素。感应等离子体球化法制备所得的金属粉体材料具有球化率高、球形度高、杂质含量低和粒径可控等优点,是当前最有希望实现3D打印用高性能球形金属粉体大规模工业化生产的技术。本文阐述了感应等离子球化技术的工作原理、发展历程和技术特点,着重介绍了利用该技术制备钨、钼、钛等金属球形粉体的研究现状,在此基础上探讨了感应等离子球化技术函待解决的难点问题以及未来的发展趋势。

Abstract:

The quality of raw powder materials have become key factors that restrict the development of metal 3D printing. The metal powders prepared by induction plasma spheroidization have many advantages, such as high spheroidization ratio、high sphericity、low impurity content and controllable particle size, which makes induction plasma spheroidization the most promising technology for large-scale industrial production of high properties spherical metal powders for 3D printing. In this paper, the development history, working principle and technical characteristics of plasma spheroidization were described. The research status of fabrication of spherical tungsten、molybdenum and titanium powders by this technology was emphatically introduced. The difficult problems to be solved and the development trend of induction plasma spheroidization were discussed as well.