Kemnitzer Jan, Wimmer Marco, Tarasova Anna, Döpper Frank
Fraunhofer Institute for Manufacturing Engineering and Automation IPA, Universitaetsstrasse 9, 95447 Bayreuth, Germany.
Chair Manufacturing and Remanufacturing Technologies, University of Bayreuth, Universitaetsstrasse 30, 95447 Bayreuth, Germany.
Polymers (Basel). 2024 Dec 23;16(24):3605. doi: 10.3390/polym16243605.
High Speed Sintering (HSS) is an additive manufacturing process with great potential to produce complex, high-quality polymer parts on an industrial scale. However, little information is currently available on the characteristics of the powder materials used and the part properties that can be achieved. This is also the case for the standard material polyamide 12 (PA 12) and the first commercially available HSS machine, the VX200 HSS. The aim of this study is, therefore, to provide the first comprehensive overview of the properties of PA 12 parts manufactured with the VX200 HSS and the characteristics of the PA 12 powder. This includes the analysis of the influence of part orientation and part position in the build job. To characterize the powder, particle size distribution, particle shape, thermal properties and powder flowability were analyzed. To characterize the parts, density and various thermal, mechanical and geometrical properties were analyzed. In summary, the powder material and part properties are largely similar to those of other Powder Bed Fusion of Polymer (PBF/P) processes. However, there are also significant differences for some part properties. It was also determined that the anisotropy of parts is very low compared to that of many other additive manufacturing processes.
高速烧结（HSS）是一种增材制造工艺，具有在工业规模上生产复杂、高质量聚合物零件的巨大潜力。然而，目前关于所用粉末材料的特性以及可实现的零件性能的信息很少。标准材料聚酰胺12（PA 12）和第一台商业可用的HSS机器VX200 HSS也是如此。因此，本研究的目的是首次全面概述用VX200 HSS制造的PA 12零件的性能以及PA 12粉末的特性。这包括分析零件取向和零件在构建作业中的位置的影响。为了表征粉末，分析了粒度分布、颗粒形状、热性能和粉末流动性。为了表征零件，分析了密度以及各种热性能、机械性能和几何性能。总之，粉末材料和零件性能在很大程度上与其他聚合物粉末床熔融（PBF/P）工艺相似。然而，某些零件性能也存在显著差异。还确定与许多其他增材制造工艺相比，零件的各向异性非常低。
Zotero 插件