摘要
采用双螺旋和球磨两种混料方式，研究不同混料时间对铝热剂性能及颗粒微现形态的影响．结果表明：混料过程中球磨混料颗粒平均粒度比双螺旋混料大，松装密度比双螺旋混料小，在双螺旋混抖４ｈ，球磨混料６ｈ时混合最为均匀，球磨混料物料均匀性好于双螺旋混料．微现形态显示双螺旋混料颗粒主要以Ｆｅ２Ｏ３粉末团聚形成，球磨混料颗粒以Ｆｅ２Ｏ３和Ａｌ接近化学配比团聚在一起长大形成．
Properties and morphology of thermites mixed up by twin-screw and ball milling procedures are investigated with different mixing time. Experiments show that the average particle size formed by ball milling procedure is langer than that by twin-screw mixing procedure. The density is lower as well. The optimal homegeneous mixing condition is present at the mixing time of 4-hours with the twin-screw proce- dure arid 6-hours with the ball milling procedure. The uniformity of thermite mixed by ball milling proce- dure is better than that by twin-screw procedure. The granules of twin-screw mixing procedure are formed mainly by means of the growing up of Fe2O3 balling and that of ball milling procedure are, however, formed and enlarged mainly by means of getting together of Al and Fe2O3 with each other.
出处
《甘肃工业大学学报》
北大核心
2001年第4期11-15,共5页
Journal of Gansu University of Technology
基金
甘肃省计委重点科技攻关项目(19804)
