Chen Jing, Lv Zeping, Zhang Xuanjia, Xu Tao, Cheng Yuntao
Lightweight Optics and Advanced Materials Technology Center, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Micromachines (Basel). 2024 Dec 28;16(1):29. doi: 10.3390/mi16010029.
Direct energy deposition is an additive technology that can quickly manufacture irregularly shaped quartz-glass devices. Based on this technology and coaxial laser/wire feeding, open-loop tests were conducted under different process parameters. A closed-loop temperature control system was designed and built for the molten pool temperature in quartz-glass additive manufacturing. It was based on a PID (proportional-integral-derivative) control algorithm for adjusting laser power. Changes in the macroscopic morphology, microstructure, and other qualities of the final additive result before and after the temperature control of the quartz glass were examined. Relative to constant laser powers of 120 W and 140 W, the temperature control of the multi-pass single-layer lateral additives produced dense surface microstructures of the additively produced quartz glass, and the molding quality was better.
直接能量沉积是一种增材制造技术，能够快速制造形状不规则的石英玻璃器件。基于该技术和同轴激光/送丝，在不同工艺参数下进行了开环测试。针对石英玻璃增材制造中的熔池温度，设计并构建了一个闭环温度控制系统。该系统基于PID（比例-积分-微分）控制算法来调节激光功率。考察了石英玻璃温度控制前后最终增材结果的宏观形貌、微观结构及其他质量的变化。相对于120W和140W的恒定激光功率，多道单层横向增材的温度控制使增材制造的石英玻璃表面微观结构致密，成型质量更好。
