适用于金属增材制造的球形粉体制备技术  

Fabrication Techniques of Spherical-Shaped Metal Powders Suitable for Additive Manufacturing

作　　者：乐国敏[1] 李强[1] 董鲜峰[1] 徐庆东[1] 胡勇[1] 李平[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《稀有金属材料与工程》2017年第4期1162-1168,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51401189)

摘　　要：金属增材制造技术作为一项革命性的先进制造技术,从20世纪90年代兴起并得到迅速发展,受到各国家的高度关注。原料是影响和制约增材制造零部件性能的关键因素之一。球形粉体由于具有良好的流动性和铺展性、以及较高的松装密度与压实密度等优异性能,是金属增材制造的理想原材料。本文针对球形粉体的雾化制备技术以及粉体的球化技术,详细总结了雾化和球化技术的相关原理、方法和技术特点,并针对金属增材制造对球形粉体制备技术的发展进行了展望。Additive manufacturing （AM） process has been a major concern in most countries since 1990s. Powers are the main raw materials for AM, and qualities of powders affect the parts fabricated by AM significantly. Spherical-shaped metal powders are ideal raw materials for AM due to their excellent fluidity, spreadability, and high bulk density. In the present paper, atomization of spherical-shaped powders and spheroidization of powders were presented. The methods such as conventional water/gas atomization, electrode induction-melting inert gas atomization, and plasma rotating electrode process were specified and compared. According to the requirement of metal AM, the trends of spherical powder fabrication technology were also proposed.

关 键 词：球形粉体 气雾化 离心雾化 粉体球化 

分 类 号：TF123.1[冶金工程—粉末冶金]