Siberian Federal University (Krasnoyarsk, Russia)

S. A. Khudonogov, Senior Lecturer, Dept. of Applied Mechanics, shudonogov@sfu-kras.ru
T. R. Gilmanshina, Cand. Eng., Associate Prof., Dept. of Engineering Bachelor’s Programme, gtr1977@mail.ru
I. V. Dubova, Cand. Eng., Associate Prof., Dept. of Fundamental Natural Science Education, idubova@sfu-kras.ru
I. M. Fedotova, Cand. Phys.-Math., Associate Prof., Dept. of Applied Mathematics and Data Analysis, ifedotova@sfu-kras.ru

Combating burn-on remains one of the most important challenges in foundry production. Despite extensive experience and modern technologies, mitigating this defect requires continuous improvement of non-stick coatings, mold preparation methods, and strict adherence to casting process conditions. Developing mathematical models of burn-on formation is a complex task due to the multifactorial nature of the process and a number of other factors. The aim of this study is to construct a two-factor model of the combined influence of casting wall thickness and the ratio of natural to activated graphite in the filler of non-stick coatings on the process of burnon formation on the surface of cast iron castings. This study examined the combined influence of casting wall thickness and non-stick coating filler composition, which made it possible to develop a mathematical two-factor model of the combined influence of casting wall thickness and the ratio of natural to activated graphite in the filler of non-stick coatings on the process of burn-on formation on the surface of cast iron castings. The resulting model is quadratic and demonstrates that both wall thickness and filler composition influence the extent of burn-on. Analysis of the model confirmed that a 1:1 ratio of natural and activated graphite in the coating filler is optimal.

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