|
|
|
| Coaxial 3D-Printing for Low Melting-Point Alloy and Polymer Composites |
| LI Zhen1 , LIU Junfeng2 , FENG Xiangchao1 , LIU Bingjie3 , YU Yuan2 , JIAO Zhiwei2 , WANG Pengfei1 |
1. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China;
2. Beijing University of Chemical Technology, Beijing 100029, China;
3. Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China |
|
|
|
|
Abstract In order to develop the process of metal/polymer 3D printing, a coaxial 3D printing device for molding low melting-point alloys and polymer composites was designed. Driven by a piston extruder and heated with heating systems, alloys and polymer composites are extruded through the nested coaxial nozzle, thus continuously integrated and molded into 3D printed composite components with better mechanical properties. In addition, the process parameters such as extrusion pressure, temperature and speed are simulated by fifinite element method and the inflfluence of printing speed, temperature, viscosity and other parameters is explored under experiments to optimize the printing process. Finally, the feasibility of such device and process is verifified in practice, which exhibits a possible method for the 3D printing of low melting-point alloy and polymer composites.
|
|
|
|
|
|
|
|
|
2022, 
