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Information × Registration Number 0225U003298, (0124U004371) , R & D reports Title Development of thermoplastics precision finishing technology with products of "green" low-pressure hydrogen combustion popup.stage_title Розробка дослідного стенду для експериментальних досліджень та методики розрахунку параметрів електрохімічного оброблення комбінованими електродами, що виготовлено за допомогою технологій 3D друку. Head Tsehelnyk Yevhen V., Кандидат технічних наук Registration Date 17-06-2025 Organization O.M. Beketov national university of urban economy in Kharkiv popup.description1 Research into the possibility of creating a safe and environmentally friendly technology for the finishing of high-precision parts made of thermoplastics, including those obtained by 3D printing methods, with the products of combustion of low-pressure hydrogen-air mixtures based on "green" hydrogen in the Impulse Thermal Energy Method, as well as automatic determination of processing modes due to development of digital twins of work processes. popup.description2  The project is focused on developing an automated process for finishing thermoplastic parts using the pulsed thermal energy method (ITEM). The developed technology can be applied to perform various finishing operations, including polishing parts produced via 3D printing for subsequent metallization. The research is based on the ITEM method, which involves processing with a time-controlled release of combustion products from the working chamber. The method's advantage lies in precise control of thermal flux and the ability to process parts of arbitrary geometric shapes, including those with internal channels and cavities. Unlike the conventional method, the investigated approach employs hydrogen fuel mixtures at sub-atmospheric pressure with hydrogen supplied from an electrolyzer. At the current stage, a preliminary design of an experimental ITEM stand has been developed, incorporating a working chamber, hydrogen, air, and nitrogen supply lines, as well as vacuum and exhaust systems for combustion products. A methodology for calculating parameters of electrochemical processing using combined electrodes manufactured via 3D printing technologies has been established. Mathematical models in ANSYS CFX describe the hydrodynamics of electrolyte flow in electrode channels and the processing zone, as well as heat transfer between the metallized coating, electrode, and electrolyte, enabling optimization of the electrodes' thermal state. The computational models are stored in the digital repository of KhNUMG named after O.M. Beketov as a set of FAIR data. These developments contribute to the creation of digital twins for process automation, enhanced processing accuracy, and the advancement of high-tech manufacturing in Ukraine, particularly for defense needs and post-war reconstruction. Product Description popup.authors Aksonov Yevhen O. Arsenieva Olha P. Biletskyi Ihor V. Kombarov Volodymyr V. Pylypenko Oleksii I. Plankovskyi Serhii I. Romanova Tetiana Ye. Fesenko Oleksii I. Tsehelnyk Yevhen V. Shypul Olha V. popup.nrat_date 2025-06-17 Close