Адаптація процесу адитивного виготовлення моделей для газифікації їх в піщаній формі при заливанні металу, а також для утилізації відходів пінополістиролу

• Datum: 2023
• Hauptverfasser: Шинський, О. Й., Михнян, О. В., Нейма, О. В., Дорошенко, В. С.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2023
• Schlagworte: лиття за моделями; що газифікуються; 3D-друк; адитивне виробництво; разові моделі; моделі; що випалюються; пінополістирол; утилізація відходів полімерів
• Online Zugang: https://plit-periodical.org.ua/index.php/plit/article/view/adaptation-process-additive-production-patterns-their-gasificati
• Назва журналу: Casting Processes

УДК 669.13: 621.74.045 TThe technological method in the field of foundry production is described, which combines additive manufacturing (AM) of disposable foundry polymer patterns with waste polystyrene (EPS) waste disposal. It was created to switch to the method of Lost Foam casting on gasified patterns (LFC), from the current method of casting on printed patterns of fired. The latter method is used because modern printed patterns have a high density and ash content, which degrades the quality of metal castings when used for LFC. EPS disposal gives an environmental effect, and AM patterns are an example of the spread of digitalization and automation of foundry production. Examples of EPS disposal, examples of castings after firing additively manufactured patterns and the ash residue, consisting of carbon, found in the working cavities of molds after firing such patterns are described. Examples of printing patterns with a cellular core and a ventilation channel are shown, an unsuccessful example of aluminum casting by the LFC method in a vacuumed sand mold, as well as an example of a 3D printer for printing using crushed plastic or plastic granules. The developed method of printing one-time foundry patterns for gasification in sand foundry mold corresponds to the trend of spreading AM in foundry production. If the specific weight of the printed pattern is too high, then new LFC methods are used with the removal of excess gases from the gasification of the pattern through the ventilation duct in the pattern and tubular evaporation outside the mold and their oxidation, in particular by our method. Such neutralization of gaseous waste at LFC rightly complements the utilization of EPS solid waste as a raw material for AM foundry patterns, together these methods give a synergistic effect on environmental protection, improving the working conditions of foundries and reducing the cost of cast products while improving its quality.   References 1. Patent 2024558 RF, C1, C08J 11/12. Method for obtaining a composite material / A. B. Korzhenevskij, V. A. Burmistrov, I. A. Ovechkin. Publ. 15.12.1994. [in russian].2. Patent 82838 Ukrayina, MPK S08J 11/04. Method for maintaining a polymer composite material / O. J. Shinskij, A. O. Stryuchenko, V. S. Doroshenko, I. O. Shinskij et al. Publ. 12.08.2013, Bull. 15. [in Ukrainian].3. Shinskij O. I., Tihonova O. A., Stryuchenko A. A., Doroshenko V. S. (2011) Study of the processes of thermal compaction of polystyrene waste. Tverdye bytovye othody. No 4. P. 48–50. [in russian].4. Uttaravalli A. N., Dinda S. & Gidla B. R. (2020) Scientific and Engineering Aspects of Recycling and Reuse of Expanded Polystyrene Waste for Various Potential Applications: A Review. Process Safety and Environmental Protection, 137, 140–148.5. Trunilina A. V., Baurova N. I. Polymer composites with biodegradation properties. Vse materialy. Enciklopedicheskij spravochnik. 2019. No 1. P. 9–13. [in russian].6. Vinnichenko A. V., Nazarevich S. A. (2021) Development of a technical solution for iterative filamentization of 3D plastic / Materialy II vseross. nauchn. konf. Modelirovanie i situacionnoe upravlenie kachestvom slozhnyh sistem. 19–23.04.2021. Sb. dokl. SPb.: GUAP, 2021. P. 107–111. [in russian].7. Mitrakov G. N., Evdokimov S. N., Lavrik E. G., Sazonov V. S. (2015) The use of additive technologies for casting burned models. Omskij nauchnyj vestnik. No 2. P. 80–84. [in russian].8. Andrianov P. A., Kolmakov A. E., Utkin M. M. (2019) Steel casting according to burnt out additive models. Izvestiya TulGU. Tehnicheskie nauki. Issue. 4. P. 346–344. [in russian].9. Shulyak V. S. (2007) Casting on gasified models. SPb.: NPO «Professional», 408 p. [in russian].10. Digital technologies in foundry production / V. S. Miroshnichenko. Innovacionnye tehnologii v litejnom proizvodstve: Sbornik trudov Mezhdunarodnoj nauchno-tehnicheskoj konferencii, / pod red. K. A. Batysheva, K. G. Semenova. M.: IIU MGOU, 2019. P. 330–333. [in russian].11. Prohorchuk E. A., Trapeznikov A. V., Larionov S. A., Sokolov A. V. (2021) Research and selection of the optimal filament composition for 3D printing of a cast-out model. Litejnoe proizvodstvo. No 4. P. 23–27. [in russian].12. Patent 151359 Ukrayina, MPK B22C 9/02, B22C 15/02. The method of additive variation of a polystyrene liquor model of another trivi- mer object with a folding configuration / O. J. Shinskij, V. S. Doroshenko, P. B. Kalyuzhnij et al. Publ. 13.07.2022, Bull. 28. [in Ukrainian].13. Ile Kauppila. 3D Printing From Plastic Waste: 10 Successful Projects. Sep 20, 2021. URL: https://all3dp.com/1/3d-printing-from-plastic-waste/14. Patent 147217 Ukrayina, MPK B22C 7/02, B22C 9/04. The method of casting metal for models that are gasified, for oxidizing gasification products / O. J. Shinskij, V. S. Doroshenko. Publ. 24.04.2021, Bull. 16. [in Ukrainian].