电弧微爆法制备增材制造用GH4169微细球形金属粉末  

A novel method for producing GH4169 spherical powder for additive manufacturing

作　　者：陈焕杰 杨桩 刘照云 王瀛川 王玉庭 徐辉 CHEN Huanjie;YANG Zhuang;LIU Zhaoyun;WANG Yingchuan;WANG Yuting;XU Hui(Shenzhen Aerospace Science Advanced Material Co.,Ltd.,Shenzhen 518000,Guangdong pro.,China;Shenzhen Aerospace Technology and Innovation Industrial Co.,Ltd.,Shenzhen 518000,Guangdong pro.,China;Z-YANG Shenzhen CNC Machine Tools Co.Ltd.,Shenzhen 518000,Guang China)

机构地区：[1]深圳航科新材料有限公司,广东深圳518000 [2]深圳中扬数控机床有限公司,广东深圳518000 [3]深圳航天科创实业有限公司,广东深圳518000

出　　处：《焊接技术》2022年第12期5-9,I0007,共6页Welding Technology

基　　金：国防科工局国防基础科研计划项目(JCKY2018204C040);深圳市技术攻关面上项目(JSGG20191129093433336)。

摘　　要：随着增材制造技术的飞速发展,GH4169制成的复杂零部件被广泛用于航空航天、汽车和能源等领域。球形粉末原材料是影响增材制造零部件性能的关键因素,气雾化法是目前主流的生产方法,具有细粉率高、粉末粒度分布窄等特点,但也存在球形度相对较差、卫星粉和空心粉多、材料成分偏析严重等问题。文中试验研究了一种微细球形金属粉末制备方法,称为电弧微爆法(Arc Plasma Micro-Blasting,APMB),该方法是一种利用电弧放电生产粉末的新方法,包含了一些雾化法+旋转电极法的特性。所制备的GH4169粉末,具有较高的球形度和良好的流动性,霍尔流速为17 s/50 g,松装密度为4.34 g/cm^(3),振实密度为4.82 g/cm^(3)。该粉末的主要相为γ相,在枝晶间区域内没有明显的Laves相,满足增材制造对粉末的要求。As the development of additive manufacturing technology,complex parts made of GH4169 are widely used in aerospace,automotive and energy fields.Spherical powder raw material is a crucial factor affecting the performance of additive manufacturing parts.Gas atomization is the most popular method of powder production with a high yield of fine powder and the powder size distribution is relatively narrow.However,there were some disadvantages such as relatively poor sphericity,more satellite powder and hollow powder,and serious material segregation.A novel powder manufacturing method named Arc Plasma Micro-Blasting(APMB)had been proposed and developed in this paper.The new process synergistically integrated several powder manufacturing process techniques including atomization,rotating electrode,arc blasting to produce spherical metal powders.The GH4169 powder was manufactured by this process and the results showed that it had high sphericity and good flowability.The Hall flowrate was 17 s/50 g,the apparent density was 4.34 g/cm^(3),and the tap density was 4.82 g/cm^(3).The main phase of the powder wasγphase,and there was no obvious Laves phase in the interdendritic region,which contented the requirements of additive manufacturing for powder.

关 键 词：电弧微爆法 GH4169 球形粉末 增材制造 

分 类 号：TB31[一般工业技术—材料科学与工程]