摘要
利用真空感应熔炼气雾化法制备PH13-8Mo钢粉末,研究出炉温度、雾化压力及漏嘴孔径对粉末特性的影响。结果表明:在出炉温度较高、漏嘴孔径较小、且雾化压力较低的工艺条件下,金属粉末的细粉收得率较大,松装密度较高,流动性较好。本研究的最佳雾化参数为出炉温度1740℃,漏嘴孔径6 mm,雾化压力6.5 MPa,该工艺条件下的PH13-8Mo钢粉末呈球形或近球形,并伴有少量卫星颗粒。
PH13-8Mo steel powders were prepared with vacuum induction-melting gas atomization.Effects of tapping temperature,nozzle diameter and atomization pressure on characteristics of PH13-8Mo steel powders were studied.The results indicate that,under the conditions of higher tapping temperature,smaller nozzle diameter and lower atomization pressure,the metal powders have higher yield of fine powder,higher apparent density and better fluidity.The optimum atomization parameters in this research are as follows,the tapping temperature is 1740℃,the nozzle diameter is6 mm,and the atomization pressure is 6.5 MPa.The PH13-8Mo steel powders are spherical or nearspherical in shape,with a small number of satellite particles.
作者
张梦醒
王长军
陈清明
胡家齐
梁剑雄
Zhang Mengxing;Wang Changjun;Chen Qingming;Hu Jiaqi;Liang Jianxiong(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China;Institute of Special Steel,Central Iron and Steel Research Institute,Beijing 100081,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第12期112-115,共4页
Heat Treatment of Metals
基金
国家重点研发计划(2016YFB1100102)
中国钢研集团有限公司创新基金(事16T60230Z)
