Impact of Oscillation Parameters on Surface Quality of Cast Billets

• Autorzy: Cibulka J. , Krzok R. , Hermann R. , Bocek D. , Cupek J. , Michalek K.

Identyfikatory

DOI

10.1515/amm-2016-0054

• Języki publikacji: EN

Abstrakty

EN

The paper is focused on impact of different oscillation parameters on surface quality of peritectic steel grades cast into billets 150x150 mm. Hydraulic oscillation used for this purpose was temporarily installed on one strand of the billet caster. Hydraulic oscillation enables, in comparison to ordinary used electromechanical oscillation, flexible set-up of basic parameters of the oscillation cycle (negative strip time and its ratio). Proper oscillation mode is capable to assure regular oscillation marks development, good lubrication in the mould and adequate compression of the solidifying shell. Impact of an oscillation mode providing negative strip time 0.085 s and its ratio -50 % on surface quality of cast billets is compared with standard oscillation mode applied on strands equipped with electromechanical oscillation characterized with variable negative strip time between 0.084 and 0.096 s and fixed negative strip ratio to -14 %.

Słowa kluczowe

EN

continuous casting of steel; mould oscillations; peritectic steel grades; billet surface quality

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 1
• Strony: 283--288
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr., wzory

Twórcy

autor

Cibulka J.

• Třinecké železárny a.s , Průmyslová 1000, Třinec - St aré Město, Czech Republic

autor

Krzok R.

• Třinecké železárny a.s , Průmyslová 1000, Třinec - Staré Město, Czech Republic

autor

Hermann R.

• Třinecké železárny a.s , Průmyslová 1000, Třinec - Staré Město, Czech Republic

autor

Bocek D.

• Třinecké železárny a.s , Průmyslová 1000, Třinec - Staré Město, Czech Republic

autor

Cupek J.

• Třinecké železárny a.s , Průmyslová 1000, Třinec - Staré Město, Czech Republic

autor

Michalek K.

• VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, 17. listopadu 15/2172, Ostrava-Poruba, Czech Republic

Bibliografia

• [1] M. M. Wolf, Continuous casting. vol. 9. Initial solidification and strand surface quality of peritectic steels, USA : Iron and steel society, 496 (1997).
• [2] K. Bo, G . Cheng, J. Wu, P. Zhao, J. Wang, Mechanism of oscillation mark formation in continuous casting of steel, Journal of University of Science and Technology Beijing 7 (3), 189-192 (2000).
• [3] B. Kozak, D . Mojudar, Slab surface optimization utilizing fixed minimum negative strip time, AIS Tech (2007).
• [4] J. Cibulka, L. Pindor, J. Cupek, J. Kufa, F. Kawa, První zkušenosti s provozováním hydraulické oscilace na sochorovém zařízení plynulého odlévání v TŽ, a. s., Iron and Steelmaking (2011).
• [5] Y. Ohba, S . K itade, I . Takasu, Austenite grain refining of ascast bloom surface by reduction of oscillation mark depth, ISI J international 48 (3), 350-354 (2008).
• [6] P. E. Raminez-Lopez, K. C. Mills, P. D. Lee, A unified mechanism for oscillation mark formation, METEC (2011).
• [7] G. K rauss, Solidification, segregation, and banding in carbon alloy steel, Metallurgical and materials transactions 34B (6), 781-792 (2003).
• [8] D. H. Herring, Segregation and banding in carbon and alloy steel, www.industrialheating.com (2014).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę