Study of nitrogen behavior during metal processing

Authors

DOI:

https://doi.org/10.15802/tpm.4.2023.03

Keywords:

metal, gas mixture, nitrogen, metal processing, argon, aluminum, titanium

Abstract

Goal. Studying the behavior of nitrogen during metal treatment with a gas mixture and during metal deoxidation, because one of the most common methods of steel processing in a ladle is the process of metal deoxidation, blowing of metal with inert gases, and vacuuming of steel. Method. Thermodynamic and kinetic calculations, a mathematical model that allows you to calculate quantitative indicators during deoxidation of metal and during the removal of dissolved gases from metal during out-of-furnace processing and to analyze the processes under investigation. The results. When blowing metal with argon on a ladle-furnace installation, the surface of the metal must be open from slag, but at the same time there is a parallel transition of gas from the atmosphere to the metal, since the slag is a protective coating of the metal from the atmosphere, it has also been proven that the foaming of the slag affects only the nitrogen content in the metal and allows reducing its concentration by 0.001%, it is also proven that nitrogen is not the cause of macrodefects in the metal workpiece. The influence of nitrogen, aluminum, and titanium on the formation of nitrides in a metal previously treated with a gas mixture containing nitrogen was determined. Scientific novelty. Consideration of the thermodynamic and kinetic features of the dissolution of nitrogen in metal during deoxidation, gas blowing of metal into the ladle made it possible to find out the heat and mass transfer processes of the behavior of nitrogen in the metal, which will contribute and possibly lead to the development of a new technology of ladle metal processing. Practical significance. Use a mixture of gases containing nitrogen when blowing a wider range of steels, taking into account the behavior of nitrogen during the deoxidation of metal, which may have an increased content of dissolved nitrogen with the help of sufficient amounts of implanted titanium, it is possible to neutralize the effect of nitrogen in steels containing aluminum, and thereby contribute elimination of defects and improvement of the quality of the cast billet also due to conducting the metal processing process under foamed slag.

References

Churan, G. M., Svyazhin, A. G., Vishkarev, A. F., & Yavoyskiy, V. N. (1970). Solubility of nitrogen in liquid iron. Metall, 51-57

Svyazhin, A. G. (1968). Study of some physicochemical properties of liquid iron and iron-carbon alloys using crucibleless melting. Theory and technology of new processes in steel production, 5 -24

Schwerdtfeger, K. (1967). Diffusion of Oxygen and Nitrogen in Liquid Iron. Trans. Met. Soc. AIME, 239(2), 134

Schenck, H., & Steinmetz, E. (1968). Chemische Aktivitaten von Bor und Stickstoff im flussigen Bereich des System Eisen – Bor – Stickstoff. Arch. Eisenhutlenwese, 39, 255

Gomersall, D. W., & Ward, R. G. (1968). The Solubility of Nitrogen in Liquid Iron – Carbon Alloys. Trans. Met. Soc. AIME, 242, 1309

Pilliod, C. F. (1988). Variables Affecting the Nitrogen Content of Carbon and Low Alloy Acid Electric Arc Furnace Steels, 46th Electric Furnace Conference Proceedings. Pittsburgh (USA): The Iron and Steel Society,107-110

Medzhibozhsky, M. Ya. (1986). Fundamentals of Thermodynamics and Kinetics of Steelmaking Processes. Vishcha shkola. Main Publishing House

Lopukhov, G. A. (2002). Foaming of Slag during Melting of Steel in Arc Furnaces. Fundamental Research on the Physicochemistry of Metallic Melts. ITsK Akadeknyha

Morozov, A. N. (1961). Modern open-hearth process. Publishing house of literature on ferrous and non-ferrous metallurgy

Yavoyskiy, V. I. (1963). Theory of steel production processes. State scientific and technical publication of materials on ferrous and non-ferrous metallurgy

Svyazhin, A. G., Kindop, V. E., Romanovich, D. A., et al. (2002). Technology of production of steel with low nitrogen content. Proceedings of the 6th congress of steelmakers (pp. 71-77). Chermetinformatsiya

Kindop, V. E., Svyazhin, A. G. (2002). Mathematical model of nitrogen behavior in the oxygen-converter process. Proceedings of the 6th congress of steelmakers (pp. 66-71). Chermetinformatsiya

Development of the ferrous metallurgy sector in Ukraine. Analytical review. (2004). Millenium

Efimenko, G. G., Neshchadim, V. N., Tsymbal, M. I., Pavlyshin, T. N., et al. (1993). Analysis of development and technical and economic problems of progress in steel production in the world. DMetI

Yakovlev, Yu. N., Golub, I. V. (2006). Features of nitrogen behavior when used as a purge gas. II International Conference “Strategy of Quality in Industry and Education”, Varna. (Bulgaria), vol. 2, 144-147

Velichko, A. G. (1998). Theory and practice of out-of-furnace metal processing. Textbook. GMetAU

Kamkina, L. V., Mishalkin, A. P., Kamkin, V. Yu., Grishchenko, Yu. M., & Isayeva, L. Ye. (2019). Replacement of the wasteful influx of nitrogen on the power of low-carbon steel 08 by the way of selecting a rational amount of nitride-containing elements. Theory and practice of metallurgy, 6, 17-24. https://doi.org/10.34185/tpm.6.2019.03

Pomarin, Yu. M., & Grigorenko, G. M. (1987). Equation for calculating the solubility of nitrogen in binary and multicomponent iron alloys. Abstracts of reports. Republican scientific and technical conference, 31 - 32.

Kutsova,V. Z., Kovzel, M. A., & Nosko, O. A. (2007). Phase transformations in special alloy steels. Initial guide. NMetAU

Carney, D. J. (1952). Gases in Metals. Amtr. Sos. for Met., Cleveland, Ohio. (pp. P 24-27).

Grigoryan, V. A., Belyanchikov, L. Ya., & Stomakhin, A. Ya. (1987). Theoretical foundations of electric steelmaking processes. Metallurgy

Gurevich, Yu. G. (1958). Neutralization of nitrogen influence on steel quality. Metallurgy of steel. Collection of articles. Vol. 2. (pp. 31-35). Publ. Siberian Metallurgical Institute

Kuragin, S. V., & Shkirmotov, A. P. (1990). Efficiency of liquid steel processing abroad. Institute of Chermatinformatsiya

Kamkina, L. V., Proydak, Yu. S., Stovpchenko, A. P., & Holub, I. V. (2007). Improving steel degassing processes during out-of-furnace treatment. XV Miedzynarodowa Science-Technical Conference “Production of metallurgy in hutnictwie”, Zakopane, 27-30.06.2007. Czesc 1, pp. 107-111

Yakovlev, Yu. N., & Holub, I. V. (2005). Research on a mathematical model of gas removal from steel during vacuumization with blowing of metal with gas mixtures. PDTU Bulletin, 15, 37-40

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Published

2023-11-21

How to Cite

Holub , I., Bila , O., Nosko , O., & Kovzik , A. (2023). Study of nitrogen behavior during metal processing. Theory and Practice of Metallurgy, (4), 22–30. https://doi.org/10.15802/tpm.4.2023.03

Issue

No. 4 (2023)

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Articles

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Copyright (c) 2023 Holub I.V., Bila O.V., Nosko O.A., Kovzik A.M.

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