Procedure for selecting a rational technological mode for the processing of cast iron melt on the basis of graph-analytical processing of the data of serial smeltings
The object of research: cast iron grade DSTU EN 1561 (EN-GJL-200), used for the manufacture of body parts for mechanical engineering.
Investigated problem: the choice of the technological mode of the process of producing cast iron under conditions of multifactorial influence on the formation of its microstructure.
The main scientific results: A procedure for truncation of the influencing factors on the formation of the microstructure is proposed, which is a consistent reduction of data from serial smeltings to uniform conditions allowed by the actual data set. Common conditions mean the closeness of the chemical composition of the melt, which makes it possible to compare the effectiveness of the applied modifiers in combination with microalloying in terms of cast iron microstructure indicators. The proposed data truncation procedure made it possible, by creating conditions for comparing the efficiency of FeSi75 and FeSi65CaBaSr2 modifiers, to develop a rational technological regime for melt processing.
It has been established that the compared modifiers have the same effect on the size of graphite – its content is (50–51) μm, however, the use of FeSi65CaBaSr2 in combination with an alloying complex (0.27 %Cr+0.083 %Ni+0.048 %Ti+0.155 %Cu+0.018 %V ) makes it possible to obtain an average amount of pearlite of 96 % in the microstructure.
The area of practical use of the results of the study: the results obtained can be used in foundries or metallurgical shops of industrial enterprises as part of a general technology for producing cast iron of various grades, developed for cases of incomplete control of the quality of charge materials. Such a situation occurs, for example, when the charge is formed from dismantled armored vehicles that cannot be restored due to destruction on the battlefield.
Innovative technological product: iron smelting technology that allows the possibility of minimizing the cost of smelting in terms of the use of modifiers and alloying ferroalloys
The scope of the technological innovative product: technological regimes for the production of cast iron.
Borsato, T., Berto, F., Ferro, P., Carollo, C. (2016). Effect of in-mould inoculant composition on microstructure and fatigue behaviour of heavy section ductile iron castings. Procedia Structural Integrity, 2, 3150–3157. doi: https://doi.org/10.1016/j.prostr.2016.06.393
Bai, Y., Luan, Y., Song, N., Kang, X., Li, D., Li, Y. (2012). Chemical Compositions, Microstructure and Mechanical Properties of Roll Core used Ductile Iron in Centrifugal Casting Composite Rolls. Journal of Materials Science & Technology, 28 (9), 853–858. doi: https://doi.org/10.1016/s1005-0302(12)60142-x
Demin, D. A., Pelikh, V. F., Ponomarenko, O. I. (1998). Complex alloying of grey cast iron. Liteynoe Proizvodstvo, 10, 18–19.
Fourlakidis, V., Diószegi, A. (2014). A generic model to predict the ultimate tensile strength in pearlitic lamellar graphite iron. Materials Science and Engineering: A, 618, 161–167. doi: https://doi.org/10.1016/j.msea.2014.08.061
Demin, D. (2018). Investigation of structural cast iron hardness for castings of automobile industry on the basis of construction and analysis of regression equation in the factor space «carbon (C) – carbon equivalent (Ceq)». Technology Audit and Production Reserves, 3 (1 (41)), 29–36. doi: http://doi.org/10.15587/2312-8372.2018.109097
Demin, D. (2017). Strength analysis of lamellar graphite cast iron in the «carbon (C) – carbon equivalent (Ceq)» factor space in the range of C = (3,425-3,563) % and Ceq = (4,214-4,372) %. Technology Audit and Production Reserves, 1(1(33)), 24–32. doi: https://doi.org/10.15587/2312-8372.2017.93178
Demin, D. (2017). Synthesis of nomogram for the calculation of suboptimal chemical composition of the structural cast iron on the basis of the parametric description of the ultimate strength response surface. ScienceRise, 8 (37), 36–45. doi: https://doi.org/10.15587/2313-8416.2017.109175
Radchenko, A. A., Alekseenko, Yu. N., Chumachenko, V. Y., Bohdan, V. V. (2016). Determination of optimum heat treatment conditions for hardness criterion of multicomponent steel based on fuzzy mathematical simulation. ScienceRise, 6 (2 (23)), 6–9. doi: https://doi.org/10.15587/2313-8416.2016.69969
Seliverstov, V., Boichuk, V., Dotsenko, V., Kuzmenko, V. (2018). Stability assessment of 30ХНМЛ steel melting process in electric arc furnaces on the basis of technological audit of serial meltings. Technology Audit and Production Reserves, 6 (1 (44)), 14–18. doi: https://doi.org/10.15587/2312-8372.2018.149263
Dymko, E. P., Belik, N. N., Zolotareva, A. V., Kiiashko, S. Iu., Demina, A. V. (2016). Kompiuterno-integrirovannye tekhnologii v liteinom proizvodstve: voprosy upravleniia kachestvom olivok. Vіsnik NTU “KhPІ», 17 (1189), 41–46
Zraichenko-Polozentcev, A. V., Koval, O. S., Demin, D. A. (2011). Evaluation of potential reserves of production for melting synthetic iron. Technology Audit and Production Reserves, 1 (1 (1)), 7–15. doi: https://doi.org/10.15587/2312-8372.2011.4081
Demin, D. A., Koval, O. S., Kostik, V. O. (2013). Technological audit of modifying cast iron for casting autombile and road machinery. Technology Audit and Production Reserves, 5 (1 (13)), 58–63. doi: https://doi.org/10.15587/2312-8372.2013.18398
Demin, D. A. (2000). Statisticheskoe modelirovanie zavisimostei mezhdu strukturnymi sostavliaiushchimi chuguna, modifitcirovannogo ferrosilitciem. Vestnik Kharkovskogo gosudarstvennogo politekhnicheskogo universiteta, 119, 36–39.
Demin, D. A., Zraichenko-Polozentcev, A. V. (2008). Rezultaty promyshlennykh issledovanii tekhnologii modifitcirovaniia sinteticheskogo chuguna. Vіsnik Natcіonalnogo tekhnіchnogo unіversitetu „KhPІ”, 12, 78–81
Lysenkov, V., Demin, D. (2022). Reserves of resource saving in the manufacture of brake drums of cargo vehicles. ScienceRise, 3, 14–23. doi: https://doi.org/10.21303/2313-8416.2022.002551
Frolova, L., Barsuk, A., Nikolaiev, D. (2022). Revealing the significance of the influence of vanadium on the mechanical properties of cast iron for castings for machine-building purpose. Technology Audit and Production Reserves, 4 (1 (66)), 6–10. doi: https://doi.org/10.15587/2706-5448.2022.263428
👁 17 ⬇ 15
Copyright (c) 2023 Denys Nikolaiev
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our journal abides by the Creative Commons CC BY copyright rights and permissions for open access journals.
Authors, who are published in this journal, agree to the following conditions:
1. The authors reserve the right to authorship of the work and pass the first publication right of this work to the journal under the terms of a Creative Commons CC BY, which allows others to freely distribute the published research with the obligatory reference to the authors of the original work and the first publication of the work in this journal.
2. The authors have the right to conclude separate supplement agreements that relate to non-exclusive work distribution in the form in which it has been published by the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.