Large-format polymeric pellet-based additive manufacturing for the naval industry
Large-format polymeric pellet-based additive manufacturing for the naval industry
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DOI：
10.1016/j.addma.2018.07.012
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发表时间：
2018-10-01
影响因子：
11
通讯作者：
Ignacio Molina, Sergio
中科院分区：
文献类型：
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作者：
Moreno Nieto, Daniel;Casal Lopez, Victor;Ignacio Molina, Sergio
由于增材技术随着开发过程的巩固和扩展而不断发展，基于聚合物颗粒的增材制造 (PPBAM) 系统在 3D 打印领域中不断增加。增材制造 (AM) 技术工业集成的新机遇已被确定，包括大型聚合物零件的增材制造。 PPBAM 工艺包括将颗粒进料挤出机构适应位移系统（笛卡尔机构或机械臂系统），以多层方法构建零件。面对大幅面打印时所需的挤出丝尺寸和材料成本证明了这种使用的合理性。在本文中，介绍了基于颗粒挤出的打印机原型以及案例研究。该案例研究包括为海军工业开发一个两立方米容量的塑料部件，采用拓扑优化设计方法以及用于大体积颗粒挤出系统的材料选择和验证方法。使用解释方法中选定的材料（PLA 和阻燃 ABS）开发了两种功能原型，并进行后处理以完全满足实际产品的规格。
Polymeric Pellet-Based Additive Manufacturing (PPBAM) systems are increasing in the field of 3D printing as a result of the evolution of additive technologies as their development process consolidates and expands. New opportunities for industrial integration of additive manufacturing (AM) technologies are identified, including AM of large polymeric parts. The PPBAM process consists of adapting a pellet-fed extrusion mechanism to a displacement system, either a Cartesian mechanism or a robotic arm system, building parts in a multi-layered approach. This use is justified by the extruded filament sizes required and the material costs when facing large format prints. In this article, a pellet extrusion based printer prototype is presented together with a case study. The case study consists of the development of a two cubic meter capacity plastic part for the naval industry with a topology optimization design approach and material selection and validation methodology for a large-volume pellet based extrusion system. Two functional prototypes were developed with the selected materials from the explained methodology a PLA and a flame retardant ABS, and post processed to full fill the actual product's specifications.