Zapico Pablo, Rodríguez-González Pablo, Robles-Valero Pablo, Fernández-Abia Ana Isabel, Barreiro Joaquín
Department of Construction and Manufacturing Engineering, University of Oviedo, Campus of Gijón, 33204 Gijón, Spain.
Department of Mechanical, Informatics and Aerospace Engineering, University of León-Universidad de León, Campus de Vegazana, 24071 León, Spain.
Polymers (Basel). 2023 Apr 27;15(9):2089. doi: 10.3390/polym15092089.
The great geometric complexity that additive manufacturing allows in parts, together with the possibility of combining several materials in the same part, establishes a new design and manufacturing paradigm. Despite the interest of many leading sectors, the lack of standardization still makes it necessary to carry out characterization work to enjoy these advantages in functional parts. In many of these techniques, the process does not end with the end of the machine cycle, but different post-processing must be carried out to consider the part finished. It has been found that the type of post process applied can have a similar effect on part quality as other further studied process parameters. In this work, the material projection technique was used to manufacture multi-material parts combining resins with different mechanical properties. The influence of different post-processing on the tensile behavior of these parts was analyzed. The results show the detrimental effect of ultrasonic treatment with isopropyl alcohol in the case of the more flexible resin mixtures, being advisable to use ultrasonic with mineral oil or furnace treatment. For more rigid mixtures, the furnace is the best option, although the other post-processing techniques do not significantly deteriorate their performance.
增材制造所允许的零件巨大几何复杂性，以及在同一零件中结合多种材料的可能性，确立了一种新的设计和制造范式。尽管许多领先行业对此很感兴趣，但缺乏标准化仍然使得有必要开展表征工作，以便在功能零件中享有这些优势。在许多此类技术中，加工过程并非在机器循环结束时就结束，而是必须进行不同的后处理才能认为零件完成。已经发现，所应用的后处理类型对零件质量的影响可能与其他进一步研究的工艺参数类似。在这项工作中，使用材料投影技术制造了结合具有不同机械性能树脂的多材料零件。分析了不同后处理对这些零件拉伸行为的影响。结果表明，对于较柔性的树脂混合物，用异丙醇进行超声处理有不利影响，建议使用矿物油超声处理或炉处理。对于较刚性的混合物，炉处理是最佳选择，不过其他后处理技术不会显著降低其性能。
