Advertisement

Study of Steel Slab Shrinkage Features During Steel Continuous Casting

  • D. I. GabelayaEmail author
  • Z. K. Kabakov
  • S. V. Rasskazov
Article
  • 6 Downloads

A method is developed for calculating absolute and relative values of steel slab linear shrinkage in a CBCM. Using existing mathematical models for slab solidification and cooling, supplemented by a method developed for calculating shrinkage, the effect of various CBCM process and design parameters in PAO Severstal’ on slab cross section reduction is studied. As a result of studies, a general pattern is found that describes the effect of carbon content and the distance from the metal surface in the mold with a casting rate of 1.0 m/min on the magnitude of steel slab relative linear shrinkage. It is found that alloys with a high carbon content have lower tendency towards shrinkage. The most significant influence of carbon content in an alloy on the amount of shrinkage is observed in the concentration range 0–0.16% due to δ → γ transformation. If the carbon content is higher than 0.16%, shrinkage slows down with an increase in carbon content due to the influence of volumetric change inhibited by a small quantity of liquid circulating between the dendrites, due to which the solidus temperature decreases, and steel only shrinks due to thermal contraction. The pattern obtained can be used in CBCM design with installation of a dynamic soft reduction system.

Keywords

mathematical modeling continuous casting slab linear shrinkage shrinkage calculation method pattern of shrinkage roller aperture 

References

  1. 1.
    Z. K. Kabakov and D. I. Gabelaya, “Study of ingot shrinkage in a cryst5allizer during steel continuous casting,” Proc. II All-Union Sci.-Tech. Conf. “Advanced process and metallurgical production equipment,” ChGU, Cherepovets (2001).Google Scholar
  2. 2.
    D. I. Gabelaya, Z. K. Kabakov, and Yu. V. Gribkova, Mathematical Model and Improvement of Technology for Steel Continuous Casting [in Russian], ChGU, Cherepovets (2016).Google Scholar
  3. 3.
    Z. K. Kabakov and D. I. Gabelaya, “Mathematical model of solidification and cooling of a continuously-cast ingot of rectangular cross section,” Proc. II Internat. Sci.-Tech. Conf. “Improvement of the efficiency of heat exchange processes and systems,” VoGTU, Vologda (2000).Google Scholar
  4. 4.
    Yu. A. Samoilovich, V. A. Goryainov, S. A. Krulevetskii, and Z. K. Kabakov, Thermal Processes During Steel Continuous Casting [in Russian], Metallurgiya, Moscow (1982).Google Scholar
  5. 5.
    Z. K. Kabakov, A. I. Pavzderin, G. S. Kozlov, and D. I. Gabelaya, “Determination of effective heat capacity coefficient for carbon steels,” Izv. Vyssh. Uchebn. Zaved., Chern. Met., No. 57(2), 15–19 (2014).Google Scholar
  6. 6.
    Suk-Chun Moon, “The peritectic phase transition and continuous casting practice,” Ph.D. Thesis, University of Wollongong, Australia, 2015 [Electronic source]. URL: http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5357&context=theses (access date: 02.12.2018).

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • D. I. Gabelaya
    • 1
    Email author
  • Z. K. Kabakov
    • 1
  • S. V. Rasskazov
    • 2
  1. 1.FGBOU VPO Cherepovets State UniversityCherepovetsRussia
  2. 2.OOO PO MolniyaCherepovetsRussia

Personalised recommendations