固体推进剂3D打印单层堆叠过程工艺参数研究  

Process Parameters of Single⁃Layer Stacking Process Through 3D Printing of Solid Propellants

作　　者：王嘉炜 史宏斌 刘宣杰 宋仕雄 史佳伟 王琪虎 WANG Jia-wei;SHI Hong-bin;LIU Xuan-jie;SONG Shi-xiong;SHI Jia-wei;WANG Qi-hu(The Institute of Xi'an Aerospace Solid Propulsion Technology,Xi'an 710025,China;School of Energy and Power Engineering,Beihang University,Beijing 100191,China;Academy of Aerospace Solid Propulsion Technology,Xi'an 710025,China)

机构地区：[1]西安航天动力技术研究所,陕西西安710025 [2]北京航空航天大学,能源与动力工程学院,北京100191 [3]航天动力技术研究院,陕西西安710025

出　　处：《含能材料》2025年第4期392-403,共12页Chinese Journal of Energetic Materials

摘　　要：为了更加合理地调配固体推进剂的3D打印工艺参数、提升打印质量,基于单层堆叠过程,采用数值模拟方法对挤出速度、打印高度以及打印温度3个影响因素进行了正交设计研究。通过方差和极差分析计算了各因素影响程度,并用灰色关联度方法进行了比较,综合考虑特殊点打印精度后筛选出最优工艺参数搭配,设计了一种通过单线截面数据计算打印线间距的方法,并进行单层打印的仿真模拟与实验验证。结果表明,挤出速度是影响打印质量的主要因素,当挤出速度为12 mm·s^(-1)、喷嘴高度为1.2 mm、打印温度为55℃时,打印成型件质量最优,参数修正后试件拉伸强度由0.21 MPa上升到0.43 MPa,密度由1.43×10^(3)kg·m^(-3)上升至1.65×10^(3)kg·m^(-3),单层打印仿真及实验表明,参数修正后成型质量明显提升。The process parameters have a direct impact on the 3D printing quality of solid propellant grains.To more reasonably adjust the 3D printing process parameters and improve printing quality,based on the single⁃layer stacking process,a numerical simulation method was employed to conduct an orthogonal experimental study on three influencing factors:extrusion speed,printing height,and printing temperature.The degree of influence of each factor was calculated through variance and range analysis.The grey relational analysis method was adopted for comparison,and the optimal combination of process parameters was selected after comprehensively considering the printing accuracy of special points.A method for calculating the printing line spacing based on single⁃line cross⁃sectional data was proposed for the first time,and simulation and experimental verification were conducted.The results indicated that the extrusion speed had the greatest impact on printing quality.When the extrusion speed was set to 12 mm·s^(-1),the nozzle height was 1.2 mm,and the printing temperature was 55℃,the printed part exhibited optimal quality.After parameter adjustment,the tensile strength of the specimen increased from 0.21 MPa to 0.43 MPa,and the density rose from 1.43×10^(3)kg·m^(-3)to 1.65×10^(3)kg·m^(-3).Single⁃layer printing simulations and experiments demonstrated a significant improvement in molding quality after parameter adjustment.

关 键 词：3D打印 单层堆叠 参数筛优 参数修正 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V435[航空宇航科学与技术—航空宇航推进理论与工程]