ВИЗНАЧЕННЯ ОКРЕМИХ ТЕХНОЛОГІЧНИХ ПАРАМЕТРІВ МОДЕЛЕЙ ІЗ ФОТОПОЛІМЕРНИХ СМОЛ, ВИГОТОВЛЕНИХ ЗА ТЕХНОЛОГІЄЮ LCD-ДРУКУ: Procesi littâ, 2025, Vol 3 (161), 72-81

• Дата: 2025
• Автори: Лук’яненко, І.В., Кивгило, Б.В., Биба, Є.Г., Ямшинський, М.М., Мініцький, А.В.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2025
• Теми: фотополімерна смола; 3D-друк; бронза; лиття за моделями; які витоплюють; спеціальні способи лиття
• Онлайн доступ: https://plit-periodical.org.ua/index.php/plit/article/view/293
• Назва журналу: Casting Processes

The paper deals with a comparative analysis of traditional modeling materials, such as paraffinstearin mixture, and modern photopolymer resins used in the technology of investment casting. Particular attention is paid to the photopolymer material Castable Blend Resin (FunToDo), which is used in additive technologies (SLA, DLP and LCD printing). The main characteristics that affect the suitability of models made of this material for the production of castings were investigated, in particular: the surface roughness of printed models, the ash content of the material, and the minimum allowable wall thickness of the models. It has been established that photopolymer models demonstrate acceptable surface quality (Ra ≈ 2.21 μm), although they are inferior to  traditional ones in terms of roughness. At the same time, photopolymers make it possible to obtain models of complex geometry with high accuracy, which is practically impossible for models made of paraffinstearin compositions using classical technologies. The ash content of the Castable Blend Resin photopolymer is 0.98%, which is significantly higher than that of traditional materials, but can be acceptable if the firing and cleaning of the molds is carefully controlled. It was also found that the minimum wall thickness of the model that ensures print stability is 1.0 mm. Samples with a smaller model wall thickness (0.5 mm) were unstable and destroyed during the printing process. The obtained results confirm the possibility of using photopolymer resins as an alternative to traditional model materials in investment casting, especially in the process of manufacturing complex and finely detailed castings. At the same time, the need for precise selection of printing modes and removal of model material from the mold cavity, as well as relatively high ash content, make further research to optimize the parameters of photopolymers in casting processes relevant.