Bobrowski Artur, Kaczmarska Karolina, Drożyński Dariusz, Woźniak Faustyna, Dereń Michał, Grabowska Beata, Żymankowska-Kumon Sylwia, Szucki Michał
Faculty of Foundry Engineering, AGH University of Krakow, Reymonta 23, 30059 Krakow, Poland.
Foundry Institute, TU Bergakademie Freiberg, 09599 Freiberg, Germany.
Materials (Basel). 2023 Apr 24;16(9):3339. doi: 10.3390/ma16093339.
Casting cores produced in additive manufacturing are more often used in industrial practice, in particular in the case of the production of unit castings and castings with very complex geometry. The growing interest in the technology of 3D printing of cores and molds also brings emerging doubts related to their mechanical and technological properties. This article presents a comparison of the properties of cores made of sand with acid-curing furfuryl resin, made with 3D printing technology; the cores were prepared in a conventional way (mixing and compaction). The main purpose of this research was to determine the possibility of using shell cores as a substitute for solid cores, aimed at reducing the amount of binder in the core. The influence of the type of the binder and the size of the grain matrix fraction on the obtained mechanical and technological properties of the cores, with particular emphasis on abrasion and thermal deformation, as well as on the kinetics of their hardening, was demonstrated.
增材制造生产的铸造型芯在工业实践中使用得越来越频繁，特别是在单件铸件和具有非常复杂几何形状的铸件生产中。对型芯和模具3D打印技术日益增长的兴趣也带来了与它们的机械和工艺性能相关的新疑问。本文对采用3D打印技术、用酸固化糠醇树脂制成的砂型芯的性能与以传统方式（混合和压实）制备的砂型芯的性能进行了比较。本研究的主要目的是确定使用壳型芯替代实体型芯以减少型芯中粘结剂用量的可能性。研究证明了粘结剂类型和颗粒基体分数大小对所获得的型芯机械和工艺性能的影响，特别强调了磨损和热变形以及它们的硬化动力学。
