Materials Reports 2020, Vol. 34 Issue (Z2): 386-389 |
METALS AND METAL MATRIX COMPOSITES |
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Performance of Spherical Powder Manufactured by Arc Plasma Micro-Blasting |
WU Zhining1, YAO Qing1,2, LIU Guosheng1, TU Guangjun1,2, ZHOU Zhenyu3, DING Mingwei4, XU Hui2
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1 Shenzhen Aerospace Technology & Innovation, Shenzhen 518000, China 2 Shenzhen Aerospace Technology New Material, Shenzhen 518000, China 3 Zhongkexin Engineering Consulting, Beijing 100039, China 4 Shenzhen Aerospace Industry Technology Research Institute, Shenzhen 518000, China |
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Abstract Anovel powder manufacturing method named Plasma Micro-Blasting Process (PMBP) is proposed and implemented in this paper. This technology makes use of the arc plasma generated by DC current power supply between a hollow tube electrode and electrically conductive material to melt the surface of the material and cause blasting to remove the spherical powder from the melt pool. Compared with conventional powder manufacturing methods, the PMBP process possesses many advantages such as high efficiency, low cost, free choice of the shape of the raw material. The powder manufactured by the PMBP typically has the shape of sphere with less content of satellite powder. In this study, copper bulk and copper tube are selected to be the anode and cathode separately. The powder with size distribution between several microns and hundreds of microns can be generated by adjusting the manufacturing parameters. The efficiency can reach 1 680 g/h when the feed speed is up to 12 mm/s. The morphology of the powder has been observed and analyzed, followed by the flowability, apparent density and content of oxygen measurements. The feasibility of the PMBP in powder metallurgy even in additive manufacturing applications has been proven.
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Published: 08 January 2021
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Fund:This work was financially supported by the Shenzhen Science and Technology Innovation Commission (JSGG20191129093433336). |
About author:: Zhining Wu, doctor, mainly engaged in the research of additive manufacturing and metal foam. Hui Xu, obtained his D.S. degrees in 2015 from Shanghai Jiao Tong University. He was a postdoctoral researcher at Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences. In 2017, he joined Shenzhen Aerospace Technology & Innovation industrial Co., Ltd. He is mainly engaged in the industrial internet and intelligent manufacturing. In recent 5 years, he was presided over and participated in 9 key technology projects of the Aerospace and defense industry, nation, and provinces. Besides, he has published more than 20 academic papers (10 indexed by SCI). He applied and authorized more than 30 invention patents (7 PCT patents). |
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