Mitaľ Gerhard, Gajdoš Ivan, Spišák Emil
Department of Technology, Materials and Computer Supported Production, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 04001 Košice, Slovakia.
Materials (Basel). 2023 Jun 22;16(13):4527. doi: 10.3390/ma16134527.
The aim of this study was to investigate the effect of Fused Filament Fabrication (FFF) layer generation strategies on abrasive wear resistance and compare the material loss of PEI (polyetherimide) plastic specimens based on different specimen building strategies. The study also compares a newly proposed path generation strategy (parallel paths in layers with 0.25 mm displacement of alternate layers) with samples from a previous study where samples were printed without displacement of alternate layers, i.e., layers stacked perpendicularly to each other. The primary focus was on the weight loss due to abrasive wear before and after the test. The tests were conducted on a tribometer constructed according to ASTM G65/16 standards using dry sand. Two printing directions were examined: X (longitudinal) and Z (portrait) orientations. For X construction, three orientations of deposition path generation were utilized, resulting in three samples for each orientation (nine samples in total for X construction). The same approach was applied to Z construction, resulting in another nine samples. In total, 18 samples were produced and tested. The deposited infill path width was 0.5 mm, and the layer thickness used in printing was 0.254 mm. Garnet abrasive FeAl(SiO) was employed in this test. Analysis of the experimental data revealed a relationship between the construction method (X and Z orientations) and the variation in different orientations (1X-3X and 1Z-3Z). The research results can be categorized as overall and partial. The overall results indicate poorer wear resistance for 1X-3X and 1Z-3Z specimens, while the partial results illustrate the findings within each individual specimen.
本研究的目的是调查熔融沉积成型（FFF）层生成策略对耐磨性能的影响，并比较基于不同试样构建策略的聚醚酰亚胺（PEI）塑料试样的材料损失。该研究还将新提出的路径生成策略（层内平行路径，交替层有0.25毫米位移）与先前研究中的样本进行比较，先前研究中的样本打印时交替层无位移，即层相互垂直堆叠。主要关注点是测试前后由于磨料磨损导致的重量损失。测试在根据ASTM G65/16标准构建的摩擦磨损试验机上使用干砂进行。研究了两个打印方向：X（纵向）和Z（纵向）方向。对于X方向构建，采用了三种沉积路径生成方向，每个方向生成三个样本（X方向构建总共九个样本）。Z方向构建采用相同方法，又生成九个样本。总共制作并测试了18个样本。沉积的填充路径宽度为0.5毫米，打印时使用的层厚为0.254毫米。本测试采用石榴石磨料FeAl(SiO)。对实验数据的分析揭示了构建方法（X和Z方向）与不同方向（1X - 3X和1Z - 3Z）变化之间的关系。研究结果可分为总体结果和部分结果。总体结果表明1X - 3X和1Z - 3Z试样的耐磨性较差，而部分结果说明了每个单独试样的具体情况。
