INVESTIGATION OF THE EVAPORATION PROCESSES OF COMPONENTS OF CHROMIUM-CONTAINING MELTS BY LOW TEMPERATURE PLASMA TREATMENT
https://doi.org/10.17073/0368-0797-2016-11-821-825
Abstract
The article describes the studies the evaporation of components in molten iron and Fe – Cr, Fe – Ni, Fe – Cr – Ni systems in plasma spot area during processing of low-temperature argon plasma treatment. A series of experiments was carried out with different weights of the treated metal. changing the arc power of the plasma torch determine the conditions under which stability of treated metal surface is achieved. The results showed that for the experimental conditions under which the plasma flow completely washes the surface of the metal droplets are most suitable: arc power is not less than 2.0 kW and metal sample mass is in the range of 5 to 10 grams. The dependence between evaporation process and chemical composition of melts was studied. Also, evaporation rate constants were determined. It was found that the greatest rate of evaporation in a neutral atmosphere of a laboratory plasma furnace have Fe – Cr – Ni. It was determined the temperature of the melt surface by the indirect method – the evaporation rate. The surface temperature of the melt which was treated by plasma torch varied in the range from 1950 to 2100 K for changing the arc power in the range of 1.6 to 2.4 kW.
About the Authors
B. A. Rumyantsev
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Postgraduate of the Chair “Metallurgy of Steel and Ferroalloys”,
Moscow
O. A. Komolova
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Metallurgy of Steel and Ferroalloys”,
Moscow
K. V. Grigorovich
National University of Science and Technology “MISIS” (MISIS);
Baikov Institute of Metallurgy and Materials Science, RAS
Russian Federation
Russian Federation
Coresponding Member of Russian Academy of Sciences, Dr. Sci. (Eng.), Professor, Head of the of the Chair “Metallurgy of Steel and Ferroalloys”, Head of the Laboratory,
Moscow
A. K. Garber
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Metallurgy of Steel and Ferroalloys”,
Moscow
References
1. Gol’dshtein M.I., Grachev S.V., Veksler Yu.G. Spetsial’nye stali [Special steel]. Moscow: MISiS. 1999, 208 p. (In Russ.).
2. Babakov A.A., Pridantsev M.V. Korrozionno stoikie stali i splavy [Corrosion-resistant steels and alloys]. Moscow: Metallurgiya, 1971, 319 p. (In Russ.).
3. Borodulin G.M., Moshkevich E.I. Nerzhaveyushchaya stal’ [Stainless steel]. Moscow: Metallurgiya, 1973, 319 p. (In Russ.).
4. Inomoto T., Matsuo V., and Yano M. Evaluation of the chemical vaccum eff ect in decarburization treatment by argon-ingected steel under normal atmosphere. ISIJ International. 2014, vol. 55, no. 4, pp. 723–726.
5. Frits E. Technology of production of corrosion-resistant steel: trends, developments and new projects. Chernye metally. 2003, no. 9, pp. 69–76. (In Russ.).
6. Genkin V.Ya. Ways of optimization of open-hearth shops: electric installation, secondary metallurgy units, continuous casters. Elektro metallurgiya. 2000, no. 5, pp. 10–13. (In Russ.).
7. Dub V.S., Iodkovskii S.A., Kulikov A.P., Durynin V.A. Experience in the use of open-hearth furnaces with secondary treatment units for production of high-quality and high-alloy steel. Elektrometallurgiya. 2003, no. 1, pp. 31–35. (In Russ.).
8. Rimkevich V.S., Butskii E.V., Bragin V.I. Mastering the technology of steel smelting unit with ladle vacuum treatment. Elektrometallurgiya. 1998, no. 4, pp. 25–28. (In Russ.).
9. Rimkevich V.S., Sisev A.A., Muruev S.V., Blokhin M.V. Opportunities for improvement of the traditional smelting of stainless steels. Chernaya metallurgiya. Byul. in-ta “Chermetinformatsiya”. 2012, no. 8, pp. 23–28. (In Russ.).
10. Cherednichenko V.S., Kuz’min M.G., An’shakov A.S. Plasma systems for melting and recovery of metals. Elektrometallurgiya. 2009, no. 9, pp. 20–27. (In Russ.).
11. Sato M. Evidence for Chromium Evaporation Infl uencing the Oxidation of 304L: The Eff ect of Temperature and Flow Rate Adv. Mater. And Process. 1988, vol. 1, no. 5. p. 1390.
12. Kashiwaja Y., Onishi S., Ishii K. Spectroscopic study on Metal Vapor and Mechanism of Vaporization in Plasma Refi ning. Proceedings of the Sixth International Iron and Steel Congress, 1990. Nagoya. ISIY, pp. 551–558.
13. Grigoryan V.A., Aleev R.A., Kochetov A.I., Pryanishnikov M.I. Evaporation kinetics of liquid iron. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 1973, no. 3, pp. 16–18. (In Russ.).
14. Drozdov N.N., Burtsev V.T., Filippov S.I., Lyutikova M.R. Study of the mechanism and kinetics of sulfur evaporation by method of weighted drop. Izvestiya VUZov. Chernaya metallurgiya = Izve stiya. Ferrous Metallurgy. 1977, no. 5, pp. 22–24. (In Russ.).
15. Fischer W.A., Janke D., Stahlschmidt K. Die Verdampfung von Eisen und seiner Begleitelemente Kupfer und Mangan beim Schwebeschmelzen unter vermindertem Druck. Archiv f.d. Eisenhüttenwesen. 1974, B. 45, no. 11, S. 757–764.
Review
For citations:
Rumyantsev B.A., Komolova O.A., Grigorovich K.V., Garber A.K. INVESTIGATION OF THE EVAPORATION PROCESSES OF COMPONENTS OF CHROMIUM-CONTAINING MELTS BY LOW TEMPERATURE PLASMA TREATMENT. Izvestiya. Ferrous Metallurgy. 2016;59(11):821-825. (In Russ.) https://doi.org/10.17073/0368-0797-2016-11-821-825
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