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Material Sciences 2020
氧化锆陶瓷的熔融沉积成型研究
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Abstract:
传统的熔融沉积成型一般采用线材供料，不适合特种陶瓷的3D打印，本研究开发了一种采用螺杆挤出供料的熔融沉积成型方法，适用于高固相含量的颗粒状耗材混合料。本研究优化设计了挤出螺杆的关键参数，采用Polyflow软件对螺杆挤出过程进行模拟，结合实验结果确定了关键打印参数，得到了均匀稳定的挤出线材。采用韦布尔模量分析了打印材料的可靠性，得到了结构致密、晶粒均匀的陶瓷材料，并制备了复杂形状陶瓷部件。
Filament is always used in traditional fused deposition molding, which is not suitable for 3D printing of engineering ceramics. A fused deposition modeling method with screw extrusion suit-able for granular feedstock with high solid loading was developed in this study. The key parameters of the extrusion screw were optimized and Polyflow software was used to simulate the screw extrusion process. A uniform and stable extrusion wire was obtained based on the key printing parameters. The reliability of the printed material was analyzed by Weibull modulus. A ceramic material with dense structure and uniform grains was obtained and ceramic components with complex geometry were prepared.
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