航空航天用高品质3D打印金属粉末的研究与应用

发布时间：2018-06-23 14:00

本文选题：D打印 + 金属粉末　；参考：《粉末冶金工业》2017年06期

【摘要】：作为金属3D打印的主要耗材,金属粉末对打印产品的质量有着至关重要的影响,航空航天、国防、医疗等领域精密复杂零件的3D打印对粉末性能,如粒度、形貌和纯净度等有着较高的要求。研究并介绍了航空航天领域3D打印用高品质镍基、钴基合金及钛合金等金属粉末的基本要求及主要制粉工艺;对两种常用的高质量金属粉末制备工艺真空感应熔炼氩气雾化法(VIGA)和等离子旋转电极法(PREP)进行了比较,指出VIGA法细粉收得率高,但存在空心粉和卫星粉;PREP粉球形度高、表面光洁、粉末粒度分布窄、流动性好、陶瓷夹杂少,在金属3D打印领域具有独特的优势。为进一步提高PREP粉的质量,应开发更新一代等离子旋转电极雾化制粉技术及装备,提高细粉收得率和生产效率。
[Abstract]:As the main consumption material of metal 3D printing, metal powder has a vital influence on the quality of printing products. 3D printing of precision and complex parts in aerospace, national defense, medical treatment and other fields has great influence on powder performance, such as particle size. The morphology and purity have higher requirements. The basic requirements of high quality nickel base, cobalt base alloy and titanium alloy powder for 3D printing in aerospace field are studied and introduced. Two common high quality metal powder preparation processes, vacuum induction melting argon atomization (VIGA) and plasma rotating electrode (prep), are compared. It is pointed out that the VIGA method has a high yield of fine powder, but there is a high spherical degree of hollow powder and satellite powder. The surface is smooth, the particle size distribution is narrow, the fluidity is good, the ceramic inclusion is less, so it has the unique advantage in the field of metal 3D printing. In order to further improve the quality of prep powder, it is necessary to develop a new generation of plasma rotating electrode atomization technology and equipment to improve the yield and production efficiency of fine powder.
【作者单位】：北京钢研高纳科技股份有限公司;钢铁研究总院高温材料研究所;北京航空航天大学材料科学与工程学院;
【基金】：北京市科技计划资助项目(Z141100002814014)
【分类号】：TF123.2;V260.5

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