雾化气体压强对2A14铝合金粉末形貌和粒度分布的影响

Effects of Atomizing Gas Pressure on Morphology and Size Distribution of 2A14 Aluminum Alloy Powders

针对3D打印技术对球形、微米金属粉末的需求,利用超音速气雾化方法制备了2A14铝合金粉末,并系统研究了雾化气体压强对粉末球形度、粒径和粒度分布的影响.结果表明:最佳雾化气体压强为6.0 MPa,该压强下制备的2A14铝合金粉末球形度高,粒度分布窄,平均粒径为32μm,能够满足3D打印的要求.

The 2A14 aluminum alloy powders for 3Dprinting technology were prepared by using ultrasonic gas atomization method.Effects of atomizing gas pressure on the morphology,particle size and size distribution of the metallic powders was studied in detail.It was found that the powders prepared under a pressure of 6MPa had high degree of sphericity,narrow size distribution,and an average particle size of 32μm,which are suitable for applications in 3Dprinting technology.