高频感应熔化金属丝气雾化制备球形钛粉  

A Combinatorial Technique Incorporating High Frequency Inductive Heating and Gas Atomization for Preparing Spherical Titanium Powders from Titanium Wires

作　　者：陆亮亮[1,2] 刘雪峰[2] 张少明[1] 徐骏[1] 贺会军 盛艳伟 LU Liangliang;LIU Xuefeng;ZHANG Shaoming;XU Jun;HE Huijun;SHENG Yanwei(Beijing General Research Institute for Nonferrous Metals,Beijing 100088;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083;Beijing COMPO Advanced Technology Co.Ltd,Beijing 101407)

机构地区：[1]北京有色金属研究总院,北京100088 [2]北京科技大学材料科学与工程学院,北京100083 [3]北京康普锡威科技有限公司,北京101407

出　　处：《材料导报》2018年第8期1267-1270,1288,共5页Materials Reports

基　　金：国家高技术研究发展计划(863计划)(2015AA042501)

摘　　要：提出了新型低成本球形钛粉气雾化制备技术——高频感应熔化金属丝气体雾化技术(Wire induction heating-gas atomization,WIGA),研究了雾化气体压力、熔体温度、送料速度对粉末性能的影响。结果表明:所制钛粉末的形貌为球形,球形度较高,粉末表面存在少量"卫星球"颗粒,占比约为1%;提高雾化压力、熔体温度和降低送丝速度均使粉末平均粒径D50减小。实验所得最佳雾化参数为:雾化气体压力4.0 MPa,熔体温度2 000℃,送料速度0.8m/min,在此条件下得到的钛粉末平均粒径为41.8μm。A novel low-cost spherical titanium powder process,wire induction heating-gas atomization(WIGA),was proposed in the present work.The effects of the gas pressure,metal temperature and the feeding speed on the particle size of the tita-nium powder were studied.The results indicated that the powders were spherical with rare satellite particles on the surface,the satellite particles accounted for one percent.The average particle size of powders decreased and the producing efficiency of fine size powders increased with the increase of gas atomization pressure,melt temperature,or with the decrease of feeding speed.The optimum parameters were gas pressure of 4.0 MPa,metal melt temperature of 2 000℃and wire-feed speed of 0.8 m/min.Under the optimized condition,the average particle size of titanium powder was 41.8 micrometers,powder morphology was spherical,and“satellite”powders rarely existed on the surface of particles.

关 键 词：球形钛粉 气雾化 雾化压力 熔体温度 送丝速度 

分 类 号：TG146.2[一般工业技术—材料科学与工程]