Abstract
Non-metallic inclusion distribution in the surface layer of IF steel slabs during unsteady casting was investigated using the original position statistic distribution analysis (OPA) method. It was found that most non-metallic inclusions larger than 10 pm existed in the subsurface layers of 0. 5–3. 5 mm from the slab surfaces and very few large non-metallic inclusions were found in the inner regions (≥4. 5 mm from slab surfaces). In addition, it was found that at high casting speed level (1.4 m/min), even a slight change of casting speed could result in a remarkable increase of the non-metallic inclusions. Thus, at high casting speed, changing the casting speed should be avoided or considerably lower speed changing rate must be used.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Emling W H, Waugaman T A, Feldbauer S L, et al. Subsurface Mold Slag Entrapment in Ultra Low Carbon Steel [A]. ISS, eds. 77th Steelmaking Conference Proceedings [C]. Warrendale, PA: ISS, 1994. 371.
Iguchi M, Yoshida J, Shimizu T. Model Study on the Entrapment of Mold Powder Into Molten Steel [J]. ISIJ International, 2000, 40(7): 685.
Tanizawa K. Influence of the Steelmaking Conditions on Non-metallic Inclusions and Product Defects [J]. Metallurgia Italiana, 1992, 84(1): 17.
WAN Xiao-guang, HAN Chuan-ji, CAI Kai-ke. Experimental Research of Submerged Entry Nozzle of Slab Continuous Casting [J]. Iron and Steel, 2000, 35(9): 20 (in Chinese).
Suzuki M, Suzuki M, Nakada M. Perspectives of Research on High-Speed Conventional Slab Continuous Casting of Carbon Steels [J]. ISIJ International, 2001, 41(7): 670.
CAI Kai-ke. Continuous Casting [M]. Beijing: Science Press, 1991 (in Chinese).
Gupta D, Lahiri A K. Cold Model Study of the Surface Profile in a Continuous Slab Casting Model: Effect of Second Phase [J]. Metallurgical and Material Transactions, 1996, 27B(8): 695.
Jonsson L, Jonsson P. Modeling of Fluid Flow Conditions Around the Slag/Metal Interface in a Gas-Stirred Ladle [J]. ISIJ International, 1996, 36(9): 1127.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, Qy., Wang, Lt., Wang, Xh. et al. Non-Metallic Inclusion Distribution in Surface Layer of IF Steel Slabs. J. Iron Steel Res. Int. 15, 70–74 (2008). https://doi.org/10.1016/S1006-706X(08)60015-1
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1016/S1006-706X(08)60015-1