【摘要】 针对现有发射药制造存在成型结构简单、难以满足日益增长的复杂结构需求，基于挤出式3D打印技术建立挤出沉积模型，确定挤出3D打印过程的重要工艺参数，开展3D打印工艺参数对发射药成型尺寸及拉伸强度影响的实验研究，分析针头内径、打印速度、底板温度等工艺参数对发射药尺寸和拉伸强度的影响。结果表明：针头内径为0.7 mm、打印速度为3 mm/s、底板温度为35℃时，发射药样品的尺寸最佳；针头内径为0.7 mm、打印速度为4 mm/s、底板温度为35℃时，发射药样品的拉伸强度最佳。更多还原

【Abstract】 For the problem that the propellant structure is difficult to meet the increasing demand of complex structure, a model of extrusion deposition 3 D printing is established, and the process parameters in the extrusion deposition 3 D printing are determined.The influences of 3 D printing process parameters, such as needle inner diameter, printing speed and temperature, on propellant size and tensile strength were experimentally studied. The results show that, when the inner diameter of the needle is 0.7 mm, the printing speed is 3 mm/s, and the temperature is 35 ℃, the size of printed propellant sample is the best. When the inner diameter of the needle is 0.7 mm, the printing speed is 4 mm/s, and the floor temperature is 35 ℃, the tensile strength of printed propellant sample is the best.更多还原