Удосконалення технології коригування хімічного складу чавуну під час плавки в індукційних тигельних печах

• Дата: 2023
• Автор: Сіренко, К. А.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2023
• Теми: чавун; хімічний склад; коригування; плавка; алгоритм; удосконалення
• Онлайн доступ: https://plit-periodical.org.ua/index.php/plit/article/view/improvement-technology-adjustment-chemical-composition-iron-duri
• Назва журналу: Casting Processes

Physico-technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine (Kyiv, Ukraine) Received 01.02.2022 UDK 621.74 : 669.13.017 The possibility of minimizing the duration of the procedure for correcting the chemical composition of the melt and ensuring its accuracy is shown. It was found that the greatest difficulties in ensuring the chemical composition of cast iron smelted in induction crucible furnaces are associated with significant instability of the chemical composition of scrap metal, ferroalloys and other materials used to correct the chemical composition of cast iron melt. The shortcomings of the known methods of regulating the chemical composition of cast iron. Proposed and substantiated approaches to improve the method of correction of the chemical composition of cast iron during smelting, which take into account the probable instability of materials added to the melt when adjusting the content of specific chemical elements based on rapid analysis of metal samples taken from the melt. The application of the Monte Carlo method in adjusting the content of chemical elements in cast iron to take into account the probabilistic estimates of the initial data on the stability of the properties of materials used to regulate the composition of cast iron. An algorithm for determining the required amount of alloying material for introduction into the melt when adjusting the content of a specific chemical element in the composition of cast iron. The rational sequence of decision-making in the procedure of calculating the amount of alloying material required for addition to the melt is recommended. The block diagram for realization of the specified ideology and algorithm is developed. Approaches to the definition of the «dominant» element and «target points» in the correction of the chemical composition of cast iron are proposed.   References 1 Sirenko, K. A., Mazur, V. L. Ideology of adjustment of the chemical composition of synthetic cast iron in the manufacturing process of casting. Metal and lytvo of Ukraine, 2021. V. 29. No. 4 (327). P. 44–54 [in Ukrainian].2 Тogobitskaya, D. N., Piptyuk, V. P., Petrov, A. F., Grekov, S. V., Snigura, I. R., Likhachev, Yu. M., Golovko, L. A. Databases and models for expert assessment of the efficiency of using ferroalloys in steel production / In «Fundamental and applied problems of ferrous metallurgy»,2017. Vol. 31. P. 150–165 [in Russian].3 Yamshynskyi, M. М. Heat resistant and wear resistant iron based casting alloys for work under extreme conditions. / The thesis for the degree of Doctor of Technical Sciences. Kyiv, 2019. Physico-technological Institute of Metals and Alloys of National Academy of Sciencesof Ukraine, 510 р. [in Ukrainian].4 Sobol, I. M. Monte Carlo method. M.: Nauka, 1978. 64 p. [in Russian].5 Mazur, V. L., Vorobey, S. A., Romanovsky, D. L., Chmelev, A. A., Golubchenko, A. K., Svichinsky, A. G. Reliability of the technological process of production of sheet metal. Kiev. Technika, 1992.170 p. [in Russian].6 Popov, E. S., Shinsky, O. I. Analysis of quality indicators of brake and composite pads for railway rolling stock. Casting and metallurgy. 2021. No 1. P. 27–37 [in Russian].7 Mazur, V. L., Naydek, V. L., Popov, E. S. Comparison of cast iron and compositional with iron insert brake pad inserts for railway rolling stock. Metal and lytvo of Ukraine. Vol. 29.2021. No. 2 (325). P. 80–89 [in Ukrainian].