RESEARCH OF THE INFLUENCE OF BOUNDARY CONDITIONS HETEROGENEITY ON THE COOLING RATE OF CYLINDRICAL BILLETS AT CCM
https://doi.org/10.17073/0368-0797-2016-9-650-655
Abstract
The article presents the results of the investigation of infl uence of the boundary conditions heterogeneity on the rate of cooling of the metal during the continuous casting of cylindrical billets of highquality steel grades. It was assumed that the boundary conditions are not uniform along the length of the billet. The authors have made the comparative analysis of temperature gradients and thermal stresses occurring in solidifying billet at diff erent cooling modes implemented in the secondary cooling zone. The conclusions about the impact of the cooling intensity on the quality of the cylindrical cast billets were obtained on the basis of these results. The article also provides recommendations on the organization of rational heating modes of casting of cylindrical cast billets.
About the Authors
N. A. Krayushkin
National University of Science and Technology “MISIS”, Moscow
Russian Federation
Russian Federation
NationalUniversityof Science and Technology “MISIS”,Moscow
I. A. Pribytkov
National University of Science and Technology “MISIS”, Moscow
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Professor of the Chair “Energyefficient and Resource-saving Industrial Technologies”, Deputy Head of the Chair
K. S. Shatokhin
National University of Science and Technology “MISIS”, Moscow
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Energy-efficient and Resource-saving Industrial Technologies”
References
1. Evteev D.P., Kolybalov I.N. Nepreryvnoe lit’e stali [Continuous casting of steel]. Moscow: Metallurgiya, 1984, pp. 131–135. (In Russ.).
2. Kan Yu.E. Process control of cast billets production. In: Nepreryvnaya razlivka stali [Continuous casting]. Moscow: Metallurgiya, 1989, pp. 9–16. (In Russ.).
3. A studу of the continuous casting of steel. International Iron and Steel Institute, Brussels, 1977. (Russ.ed.: Lean J.B. Issledovanie nepreryvnoi razlivki stali. Moscow: Metallurgiya, 1989, pp. 9–16).
4. Samoilovich Yu.A., Timoshpol’skii V.I., Trusova I.A., Filippov V.V. Stal’noi slitok: v 3-kh t. T. 2. Zatverdevanie i okhlazhdenie [Steel ingot: in 3 vols. Vol. 2. Solidifi cation and cooling]. Minsk: Bel. navuka, 2000, 637 p. (In Russ.).
5. Malinochka Ya.N., Moiseeva L.A., Esaulova T.V. Some defects in continuously cast slabs and metal quality improvement. Stal’, 1987, no. 10, pp. 27–30. (In Russ.).
6. Mishchenko I.O. Upravlenie urovnem defektov poverkhnosti i makrostruktury nepreryvno-litykh slyabov MNLZ: avtoref. dis... kand. tekh. nauk. [Management of defects level of surface and macrostructure of cast slabs: Extended Abstract of Cand. Sci. Diss.]. Moscow: MISiS, 2006, 25 p. (In Russ.).
7. Krayushkin N.A., Kuznetsova N.P. Investigation of thermal conditions of round billets of high-quality steel solidifi cation for semicontinuous casting. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 2012, no. 7, pp. 45–48. (In Russ.).
8. Kuznetsova N.P., Nikitin D.A. In: 66-e dni nauki NITU “MISiS” [66th Scientifi c Days].Moscow: MISiS, pp. 287– 294. (In Russ.).
9. Gusovskii V.L., Lifshits A.E. Metodiki rascheta nagrevatel’nykh i termicheskikh pechei: Uchebno-spravochnoe izdanie [Methods for calculating the heating and heat treatment furnaces: Educational and reference book]. Moscow: Teplotekhnik, 2004, 400 p. (In Russ.).
10. Temlyantseva M.V, Oskolkova T.N. Treshchinoobrazovanie v protsessakh nagreva i okhlazhdeniya stalei i splavov [Cracking in the heating and cooling processes of steels and alloys]. Moscow: Flinta: Nauka, 2005, 195 p. (In Russ.).
11. Taits N.Yu. Tekhnologiya nagreva stali [Technology of steel heating]. Moscow: Metallurgizdat, 1962, 567 p. (In Russ.).
12. Krivandin V.A., Arutyunov V.A., Mastryukov B.S. etc. Metallurgicheskaya teplotekhnika. T.1. Teoreticheskie osnovy: Uchebnik dlya vuzov [Metallurgical heat engineering. Vol.1. Theoretical foundations: A Textbook for universities]. Moscow: Metalurgiya, 1986, 424 p. (In Russ.).
13. Emel’yanov V.A. Teplovaya rabota mashin nepreryvnogo lit’ya zagotovok: Uchebnoe posobie [Thermal operation of continuous casting machines: Textbook]. Moscow: Metallurgiya, 1988, 142 p. (In Russ.).
14. Akimenko A.D., Korotkov, K.P., Maiorov, N.P. Osvoenie nepreryvnoi razlivki stali [Development of continuous casting of steel]. Leningrad: Sudpromgiz, 1960, 227 p. (In Russ.).
15. Kuznetsova N.P., Krayushkin N.A. Research of thermal modes of solidifi cation in semi-continuous casting of round steel ingots for the production of seamless tubes. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 2014, no. 3, pp. 34–38. (In Russ.).
16. Krasnokutskii P.G., Krivandin V.A., Bezrukov V.I., Ol’yak V.D. Thermal stresses in a high-speed jet of metal heating. Kuznechnoshtampovochnoe proizvodstvo. 1983, no. 11, pp. 25–27. (In Russ.).
17. Krasnokutskii P.G., Krivandin V.A., Ol’yak V.D., Bezrukov V.I. Determination of permissible metal heat intensity. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 1984, no. 7, pp. 115–119. (In Russ.).
Review
For citations:
Krayushkin N.A., Pribytkov I.A., Shatokhin K.S. RESEARCH OF THE INFLUENCE OF BOUNDARY CONDITIONS HETEROGENEITY ON THE COOLING RATE OF CYLINDRICAL BILLETS AT CCM. Izvestiya. Ferrous Metallurgy. 2016;59(9):650-655. (In Russ.) https://doi.org/10.17073/0368-0797-2016-9-650-655
Views:
504
Email this article 