Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel

  • Zhelin Chen
  • Hamed Olia
  • Bryan Petrus
  • Madeline Rembold
  • Joseph Bentsman
  • Brian G. ThomasEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


Mold level fluctuations caused by unsteady bulging of the solidifying shell affect the quality of the steel and stable operation of the continuous steel casting process. A dynamic bulging model, which captures the behavior of the 2-D longitudinal domain through interpolation of multiple 1-D moving slices, is used to calculate the transient bulging profile, volume changes caused by unsteady bulging, and the accompanying level fluctuations in the mold. The liquid steel flow rate through the SEN into the tundish is calculated with a stopper-position-based model. These two models are combined to investigate mold level fluctuations in a thin-slab caster under real casting conditions. The model is verified by comparing the simulation results with transient measurements in a commercial thin-slab caster.


Continuous casting Unsteady bulging Mold level fluctuation Stopper rod flow model Dynamic bulging model 



This work was supported by NSF Grant #1300907, NSF INTERN DCL #1747876, and the Continuous Casting Center at the Colorado School of Mines. Special thanks are extended to Nucor Steel Decatur for providing caster data and casting conditions.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Zhelin Chen
    • 1
  • Hamed Olia
    • 2
  • Bryan Petrus
    • 3
  • Madeline Rembold
    • 3
  • Joseph Bentsman
    • 1
  • Brian G. Thomas
    • 2
    Email author
  1. 1.University of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Colorado School of MinesGoldenUSA
  3. 3.Nucor Steel DecaturTrinityUSA

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