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Evaluation of essential powder properties through complementary particle size analysis methods for laser powder bed fusion of polymers

机译:通过互补粒度分析方法评价必需粉末特性,用于聚合物的激光粉床融合

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The resolution of complex parts produced by laser powder bed fusion of polymers (PBF-LB/P) is defined significantly by the shape and size distribution of the feedstock powder. Its analysis is usually performed by optical measurement systems such as laser diffraction or image analysis. In this study, the most relevant particle size parameters will be extracted from a set of different measuring methods, as well as the Hausner ratio and finally discussed regarding safe and successful processability. Extracted data include the sphericity, fine fraction, volume-and number-weighted diameter distributions, and statistical significance analysis, including comparison of PA12 and carbon-black-additivated PA12. The presented results should give researchers a first impression about the suitability of polymer powders for PBF-LB/P, based on powder feedstock characterization.
机译:通过原料粉末的形状和尺寸分布显着地定义由聚合物激光粉床融合(PBF-LB / P)产生的复杂部件的分辨率。 其分析通常由光学测量系统(例如激光衍射或图像分析)进行。 在该研究中,最相关的粒度参数将从一组不同的测量方法中提取,以及Hausner比率,并且最终讨论安全和成功的加工性。 提取的数据包括球形,细分,体积和数量加权直径分布,以及统计显着性分析,包括PA12和炭黑 - 累积PA12的比较。 所提出的结果应给予研究人员对基于粉末原料表征的PBF-1b / p的聚合物粉末的适用性的第一印象。

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