模拟月壤激光熔融成型工艺参数试验初探

月壤3D打印可以实现月球的原位资源利用，有望成为月球基地建设和持久运营维护的关键技术手段。文章综述了模拟月壤激光3D打印方法的研究现状，搭建了以CUG-1A模拟月壤为原料的激光熔融成型原理试验系统，并开展了常规环境工艺参数的初步试验。结果显示:激光功率和扫描速度影响激光熔融深度和直径，是模拟月壤激光熔融成型的关键工艺参数；模拟月壤熔融成型过程易出现孔洞、球化等典型缺陷，需要进一步对月壤激光相变机理和上述成型工艺参数进行解析优化。

Experimental study of the parameters of laser melting molding process with regard to simulated lunar soil

The 3D printing of the lunar soil, to realize the in-situ resource utilization of the lunar resources, is expected to become a key technical approach for the construction and the continuous operation and maintenance of the lunar bases. This paper reviews the research status of the laser 3D printing method for the lunar soil simulation. The experimental system is built based on the laser melting forming principle for the CUG-1A simulated lunar soil, and the preliminary tests are carried out with the conventional environmental process parameters. It is shown that the laser power and the scanning speed are the key technological parameters for the simulation of the lunar soil laser melting folding, which affect the laser melting depth and diameter. The typical defects such as the holes and the balling effect are likely to be seen in the molten forming process of the simulated lunar soil, so it is necessary to further analyze and optimize the mechanism and the forming parameters of the laser phase transformation of the lunar soil simulant.