The Influence of Selected Selective Laser Sintering Technology Process Parameters on Stress Relaxation, Mass of Models, and Their Surface Texture Quality
The Influence of Selected Selective Laser Sintering Technology Process Parameters on Stress Relaxation, Mass of Models, and Their Surface Texture Quality
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DOI：
10.1089/3dp.2019.0036
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发表时间：
2020-06-01
影响因子：
3.1
通讯作者：
Kozior, Tomasz
中科院分区：
文献类型：
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作者：
Kozior, Tomasz
本文介绍了选择性激光烧结技术的基本工艺参数对生产模型的质量（烧结材料-聚酰胺PA 2200的密度），根据ISO 3384标准确定的压缩过程中的应力松弛和几何表面结构参数（SGPs）的影响的研究结果。在测试过程中，考虑了工艺参数的影响，例如模型在虚拟构建平台上的位置（打印方向），供应给粉末烧结层的能量密度，以及制造材料层的层厚度。试验结果证实，工艺参数对模型材料的密度（烧结状态）、机械性能（压缩过程中的应力松弛）和表面纹理质量（SGPs）具有显著影响。确定了模型在构建平台上的最有利的定位变体。根据预期的质量、强度和SGP质量，选择组合层的最有利的厚度变量和供应给烧结粉末层的能量的密度值。此外，它已被证明，它是可能的，以减少质量（>20%），同时保持令人满意的机械和表面纹理的定性性能建立模型。
The article presents the results of research on the impact of basic process parameters of selective laser sintering technology on the mass of the produced models (density of the sintered material-polyamide PA 2200), stress relaxation during compression determined in accordance with the ISO 3384 standard, and geometric surface structure parameters (SGPs). During the tests, the influence of process parameters such as the location of the models on the virtual construction platform (printing direction), the density of the energy supplied to the sintered layer of powder, and the layer thickness of the manufactured material layer was taken into account. The test results confirmed that the process parameters have a significant impact on the density of the model material (in the sintered state), the mechanical properties (stress relaxation during compression), and the quality of the surface texture (SGPs). The most favorable positioning variants of the models on the construction platform were determined. The most favorable thickness variants of the combined layers and the density value of the energy supplied to the sintered powder layer were selected, depending on the expected mass, strength, and SGP quality. In addition, it has been shown that it is possible to build models with reduced mass (>20%), while maintaining satisfactory mechanical and qualitative properties of the surface texture.