Increasing Casting Speed in High Carbon and Micro Alloy DIN EN ISO 16120-2: 2011-C66D Steels

Yıl 2021, Cilt: 8 Sayı: 1, 117 - 132, 31.01.2021

Ömer Saltuk Bölükbaşı , Volkan Kızılay

https://doi.org/10.31202/ecjse.779884

Öz

Different parameters can be used together in the continuous casting process known as an important steel production stage in the world. It is important to use metallurgical appropriate parameters to meet the product properties. Many innovations have been made in the continuous casting process from past to present. It is known that studies are carried out on many effective topics such as steel analysis, refractory materials, continuous casting parameters, in order to make the proper solidification that will meet the needs with its continuous casting capabilities. When continuous casting parameters are examined; the casting speed parameter was found to be effective in terms of quality needs in macro samples. Therefore, in this study, the effect of the increase of casting speed parameters on the quality of macro samples was investigated. As a method; in high carbon, micro-alloyed DIN EN ISO 16120-2: 2011-C66D quality steels, in different castings, this parameter was changed and macro samples were taken and evaluated in terms of quality needs. When macro sample quality results are compared; the effect of casting speed was observed. In this study; the effect of the increase in casting speed in continuous billet casting facility on optimum metallographic and physical quality has been investigated and the results have been interpreted

Anahtar Kelimeler

Iron steel, steel production, continuous casting, casting speed

Increasing Casting Speed in High Carbon and Micro Alloy DIN EN ISO 16120-2: 2011-C66D Steels

Öz

Different parameters can be used together in the continuous casting process known as an important steel production stage in the world. It is important to use metallurgical appropriate parameters to meet the product properties. Many innovations have been made in the continuous casting process from past to present. It is known that studies are carried out on many effective topics such as steel analysis, refractory materials, continuous casting parameters, in order to make the proper solidification that will meet the needs with its continuous casting capabilities. When continuous casting parameters are examined; the casting speed parameter was found to be effective in terms of quality needs in macro samples. Therefore, in this study, the effect of the increase of casting speed parameters on the quality of macro samples was investigated. As a method; in high carbon, micro-alloyed DIN EN ISO 16120-2: 2011-C66D quality steels, in different castings, this parameter was changed and macro samples were taken and evaluated in terms of quality needs. When macro sample quality results are compared; the effect of casting speed was observed. In this study; the effect of the increase in casting speed in continuous billet casting facility on optimum metallographic and physical quality has been investigated and the results have been interpreted.

Anahtar Kelimeler

Iron steel, steel production, continuous casting, casting speed

Kaynakça

• References https://tr.steelorbis.com/celik-fiyatlari/celik-istatistikleri, Date of access: 10.05.2020
• Chow, C., “The effects of high speed casting on the mould heat transfer, billet solidification, and mould taper design of continuously cast steel billets”, Doctoral dissertation, University of British Columbia, 2001.
• Li, C., Thomas, B. G., & Ojeda, C., “Ideal Taper Prediction for High Speed Billet Casting”, University of Illinois at Urbana-Champaign, 2002.
• Chatterjee, S., Li, D., Chattopadhyay, K., “Modeling of liquid steel/slag/argon gas multiphase flow during Tundish open eye formation in a two-strand Tundish”. Metallurgical and Materials Transactions B, 2018, 49(2), 756-766. Li C., Thomas B.G., “Maximum Casting Speed for Continuous Cast Steel Billets Based on Sub-Mold Bulging Computation”, 85th Steelmaking Conf. Proc., ISS, Warrendale, PA, (held in Nashville, TN, March 10-13, 2002), pp. 109-130, 2002
• Kittaka, S., Uehara, M., Sato, T., & Higashi, H., “High speed casting mold for billet caster(NS hyper mold)”, Nippon Steel Technical Report(Japan), 2000, 82, 65-70.
• Thomas, B. G., “Continuous Casting of Steel”, Department of Mechanical and Industrial Engineering University of Illinois at Urbana-Champaign 1206 West Green Street Urbana, IL 61801, U.S.A., 2001, Chapter, 15, 499-540.
• Semplici, S., Karan, R., & Mapelli, C., “Diamold® design of corners in billet high speed continuous casting”, la metallurgia italiana, 2005. 58-90.
• Haiqi, Y. U., and Z. H. U. Miaoyong. "Effect of electromagnetic stirring in mold on the macroscopic quality of high carbon steel billet." Acta Metallurgica Sinica (English Letters) 22.6, 2009, 461-467. Wu, Chenhui, Cheng Ji, and Miaoyong Zhu. "Influence of differential roll rotation speed on evolution of internal porosity in continuous casting bloom during heavy reduction." Journal of Materials Processing Technology 271 (2019): 651-659.
• Xiao, C., Zhang, J. M., Luo, Y. Z., Wei, X. D., Wu, L., Wang, S. X., “Control of macrosegregation behavior by applying final electromagnetic stirring for continuously cast high carbon steel billet”. Journal of Iron and Steel Research International, 2013, 20(11), 13-20.
• Sengupta, J., Thomas, B. G., & Wells, M. A., “Understanding the role water-cooling plays during continuous casting of steel and aluminum alloys”. In Conference Proceedings of M&ST, 2004, 179-193).
• Wu, C., Ji, C., & Zhu, M., “Closure of internal porosity in continuous casting bloom during heavy reduction process”. Metallurgical and Materials Transactions B, 2019, 50(6), 2867-2883.
• Thomas, B. G., Review on modeling and simulation of continuous casting. steel research international, 2018, 89(1), 1700312.
• Su, W., Wang, W. L., Luo, S., Jiang, D. B., & Zhu, M. Y., “Heat transfer and central segregation of continuously cast high carbon steel billet”. Journal of Iron and Steel Research International, 2014, 21(6), 565-574.
• Atalay, G., “Solidification and Cooling Investigation in Continuous Casting”, Yıldız Technical University, Master's Thesis, 2008.
• Maurya, A., & Jha, P. K., Influence of electromagnetic stirrer position on fluid flow and solidification in continuous casting mold. Applied Mathematical Modelling, 2017, 48, 736-748.
• Luo, S., Piao, F. Y., Jiang, D. B., Wang, W. L., Zhu, M. Y., “Numerical simulation and experimental study of F-EMS for continuously cast billet of high carbon steel”. Journal of Iron and Steel Research, International, 2014, 21(1), 51-55.
• Akpınar, M., Minimization Of Banded Structure In Sprıng Steels By The Optımızatıon Of Continuous Casting Machine Parameters (Doctoral Dissertation, Middle East Technical University), 2019.
• Yu, S., Long, M., Chen, D., Fan, H., Yu, H., Duan, H, Liu, T, “Effect of the mold corner structure on the friction behavior in slab continuous casting molds”. Journal of Materials Processing Technology, 2019, 270, 157-167.
• Mortan, J., Kapaj, N., Sezer H., “Next Steps in High-Speed Billet Casting at Ege Celik (Aliaga, Turkey)” Metec 2nd Estad, Düsseldorf, 15-19 June 2015.
• Cobelli, P., Grundy, A.N., Feldhaus S., Hsu,Y.C., Lo C.H., Lin, C.H., “Fast Casting of 150 sq billets-boost of productivity” Metec 2nd Estad, Düsseldorf 15-19 June 2015.
• Roy, S., Singh, R. K., Keshari, K. K., Pradhan, N., Kumar, M., Gupta, A, Mishra, B., “Reduction in Surface Defect in Continuous Cast Slab through Intervention in Process Parameters”. In Materials Science Forum, Trans Tech Publications Ltd., 2020, Vol. 978, 91-96.
• Villoria, R., Stafforte, H., Sparapani, O., Madias, J., & Dziuba, M., “High speed continuous casting of low carbon steel billets”. In Seventy Ninth Conference of the Steelmaking Division of the Iron and Steel Society, 1996, 315-319.
• Mazumdar, D., “Review, Analysis, and Modeling of Continuous Casting Tundish Systems”. Steel research international, 2019, 90(4), 1800279.
• Concast-a, Continuous Casting Machine 6-Strand Billet Caster, “Functional Description”, 2003.
• Concast-b, Continuous Casting Machine 6-Strand Billet Caster, “Metallurgical, Operating and Safety Manual”, 2003.
• ASTM E381, Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings, Designation: E381 − 01 (Reapproved 2012).