中国空间科学技术

中国空间科学技术 ›› 2023, Vol. 43 ›› Issue (6): 66-73.doi: 10.16708/j.cnki.1000-758X.2023.0085

• 空间科学与试验专栏 • 上一篇    下一篇

模拟月壤3D打印致密化成型研究

刘祎炜，张弦，王超，宋坚，陈雄，姚伟   

  1. 1 中国空间技术研究院 钱学森空间技术实验室，北京100094
    2 南京理工大学 机械工程学院，南京150001
  • 出版日期:2023-12-25 发布日期:2023-12-12

3D printing densification of lunar regolith simulant

LIU Yiwei，ZHANG Xian，WANG Chao，SONG Jian，CHEN Xiong，Yao Wei   

  1. 1 Qian Xuesen Laboratory of Space Technology，China Academy of Space Technology，Beijing 100094，China
    2 School of Mechanical Engineering，Nanjing University Science and Technology，Nanjing 210094，China
  • Published:2023-12-25 Online:2023-12-12

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摘要： 月壤原位3D打印（增材制造）可实现月球基地的原位建造和关键部件的原位制造，大幅降低月球探测任务的成本和风险。搭建了选择性激光熔融模拟月壤实验系统，开展单轨成型实验，探索激光功率，扫描速度、首层粉末厚度对样品致密化的影响，同时测量了每条轨道的宽度和深度。研究结果表明，单轨宽度随着扫描速度的增高而下降，直至几乎不变。同一激光功率下，单轨深度随着首层粉末厚度增加而变深。单轨深度随着扫描速度的升高，先升高后下降。单条熔道密度可以达到2.5g/cm3，此时相对密度为86%。随着扫描速度增加，不同层厚单轨密度均稳定在1.7g/cm3。首层粉末厚度越薄时，单轨密度也是略高于其他层厚。这些数据将为原位建造技术提供重要支撑。

关键词: 原位资源利用（ISRU）, 模拟月壤, 选择性激光熔融（SLM）, 粉末层厚度, 太阳光, 激光功率

Abstract: The insitu 3D printing of lunar regolith（additive manufacturing）can realize the in-situ construction of the lunar base and the insitu manufacturing of key components，and can greatly reduce the cost and risk of the lunar exploration mission.A selective laser melting lunar regolith simulant experiment system was built to carry out single-track molding experiments to explore the effect of the first powder layer thickness on the densification of the sample，while the width and depth of each track were measured.The results show that the width of the single-track decreases with increasing scanning speed until the width is almost constant.At the same laser power，the single-track depth becomes deeper as the first powder layer thickness increases.The singletrack depth increases and then decreases with the increase in scanning speed.The density of a single-track can reach 2.5g/cm3，and the relative density is 86%.As the scanning speed increases，the density of single-track for different layer thicknesses is stabilized at 1.7g/cm3.When the first layer of powder is thinner，the density of single-track is also slightly higher than other layer thicknesses.

Key words: in-situ resource utilization（ISRU）, lunar regolith simulant, selective laser melting（SLM）, powder layer thickness, sunlight, laser power