基于数值仿真的药柱热挤出成型过程分析  

Analysis of Hot Extrusion Molding Process of Propellant Grain Based on Numerical Simulation

作　　者：刘彬 覃鹏 王勇 李鳌 郭进勇 石义官 Liu Bin;Qin Peng;Wang Yong;Li Ao;Guo Jinyong;Shi Yiguan(Department of Intelligent Manufacture,Automation Research Institute Co.,Ltd.of China South Industries Group Corporation,Mianyang 621000,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]中国兵器装备集团自动化研究所有限公司智能制造事业部,四川绵阳621000 [2]北京理工大学机械与车辆学院,北京100081

出　　处：《兵工自动化》2024年第12期38-41,共4页Ordnance Industry Automation

摘　　要：为实现高质量的药剂热挤出成型,对基于数值仿真的药柱热挤出成型过程进行分析。建立以某高聚物氟碳药剂为研究对象的基础模型,利用Polyflow软件模拟实心药柱的挤出过程。分析该实心药柱在定压和定速挤出过程下的压力分布、速度分布,以及膨胀率的变化趋势,探究不同药柱尺寸与工艺参数的变化关系。结果表明:挤出某实心药柱最佳成型工艺为定速挤压工艺,其主要工艺温度范围为60~80℃,入口体积流率范围在5.10×10^(-9)~1.02×10^(-8)m^(3)/s。In order to realize the hot extrusion molding of high quality propellant,the hot extrusion molding process of propellant grain based on numerical simulation was analyzed.The basic model of a polymer fluorocarbon propellant was established,and the extrusion process of solid propellant was simulated by polyflow software.The pressure distribution,velocity distribution,and the change trend of expansion rate of the solid grain in the constant pressure and constant speed extrusion process were analyzed,and the relationship between different grain sizes and process parameters was explored.The results show that the best forming process of solid grain is constant speed extrusion process,the main process temperature range is 60 to 80℃,and the inlet volume flow rate range is 5.10×10-9 to 1.02×10-8 m3/s.

关 键 词：挤塑成型 仿真分析 POLYFLOW 

分 类 号：TJ410.3[兵器科学与技术—火炮、自动武器与弹药工程]