High-speed 3D printing has recently gained much interest due to its potentials in improving efficiency of fabricating complex geometry components and applications in large-scale additive manufacturing (AM). In this study, a parametric study is performed experimentally to investigate factors affecting high-speed 3D printing of continuous carbon fiber reinforced composites (CFRCs), including material deposition rate, print (nozzle traverse) speed, and nozzle tilt angle based on a novel multi-axis AM approach. The method uses thermoplastic pellets and continuous carbon fiber tows as feedstock materials. The obtained sample quality and mechanical properties are investigated with respect to deposition rate, print speed, and nozzle tilt angle. The fiber impregnation quality is examined through microstructure analysis and correlated with the process conditions and mechanical properties. Increasing deposition rate and tilt angle both improve fiber impregnation quality, enabling implementation of higher print speed and yielding improved mechanical properties. This, combined with demonstrations of printed complex geometry components, shows the great potentials of the proposed method for AM of continuous CFRCs at high speeds. The results of this study also provide further guidance on design and manufacturing of large-volume, high-strength CFRCs through 3D printing.

高速3D打印由于其在提高制造复杂几何形状组件的效率以及在大规模增材制造（AM）中的应用方面的潜力而引起了人们的极大兴趣。在这项研究中，通过实验进行了参数研究，以研究影响连续碳纤维增强复合材料（CFRC）的高速3D打印的因素，包括材料沉积速率，打印（喷嘴横移）速度和基于新型复合材料的喷嘴倾斜角。轴AM方法。该方法使用热塑性颗粒和连续碳纤维丝束作为原料。对于沉积速率，打印速度和喷嘴倾斜角度，研究了获得的样品质量和机械性能。通过微观结构分析检查纤维的浸渍质量，并将其与工艺条件和机械性能相关联。沉积速率和倾斜角的增加都可以改善纤维的浸渍质量，从而可以实现更高的打印速度并提高机械性能。这与印刷的复杂几何图形组件的演示相结合，显示了所提出的用于连续CFRC高速AM增材制造方法的巨大潜力。这项研究的结果还为通过3D打印设计和制造大容量，高强度CFRC提供了进一步的指导。结合印刷复杂几何图形的演示，显示了所提出的用于连续CFRC高速AM增材制造方法的巨大潜力。这项研究的结果还为通过3D打印设计和制造大容量，高强度CFRC提供了进一步的指导。结合印刷复杂几何图形的演示，显示了所提出的用于连续CFRC高速AM增材制造方法的巨大潜力。这项研究的结果还为通过3D打印设计和制造大容量，高强度CFRC提供了进一步的指导。