Research on Assist-Gas Dynamics and Nozzle Design for Laser Cutting

9400119定居点 该奖项是为研究，以提高对 用于激光切割的辅助气体的动力学 熔融材料和等离子体，以提高性能。 超音速微射流技术将转移到 在激光切割领域，通过以下方式提高切割速度和效率 保持沿所述切割器的整个切割边缘沿着的超音速流， 切口。 增强了熔体去除，并且材料在熔体中再沉积。 避免了切口。 传统同轴电缆的显著改进 还将通过改进喷嘴设计来寻求辅助气体输送。 这项工作主要是实验性的，涉及开发适当的喷嘴和微射流，以及使用实际商业激光设备进行切割试验。 该研究有望影响与气体动力学相关的基础知识基础以及激光切割关键制造技术的效率。 辅助气体动力学的改进有望直接转化为更快、更清洁的激光切割。 更强大的激光器，现在变得可用，也将受益于改进的辅助气体动力学，预计作为这项研究的结果。

9400119 Settles The award is for research to improve understanding of the dynamics of the assist gas used with laser cutting to blow away molten material and plasma, with a view to improving performance. The technology of supersonic microjets will be transferred to the field of laser cutting to improve cutting speed and efficiency by maintaining supersonic flow along the entire cutting edge of the kerf. Melt removal is enhanced and material redeposition in the kerf is avoided. Significant improvements in conventional coaxial assist-gas delivery will also be sought by improving nozzle design. The work is primarily experimental and involves development of appropriate nozzles and microjets, and cutting trials using actual commercial laser equipment. The research is expected to impact the fundamental knowledge base related to gas dynamics as well as the efficiency of the key manufacturing technology of laser cutting. Improvements in assist gas dynamics are expected to translate directly into faster, cleaner laser cuts. More powerful lasers now becoming available would also benefit from the improved assist gas dynamics expected as a result of this research.