Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel

Zhelin Chen; Hamed Olia; Bryan Petrus; Madeline Rembold; Joseph Bentsman; Brian Thomas

doi:10.1007/978-3-030-05728-2_3

Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel

Zhelin Chen, Hamed Olia, Bryan Petrus, Madeline Rembold, Joseph Bentsman, Brian Thomas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English (US)
Title of host publication	Materials Processing Fundamentals, 2019
Editors	Antoine Allanore, Guillaume Lambotte, Samuel Wagstaff, Jonghyun Lee
Publisher	Springer International Publishing
Pages	23-35
Number of pages	13
ISBN (Print)	9783030057275
DOIs	https://doi.org/10.1007/978-3-030-05728-2_3
State	Published - 2019
Event	Materials Processing Fundamentals Symposium held at the TMS Annual Meeting and Exhibition, 2019 - San Antonio, United States Duration: Mar 10 2019 → Mar 14 2019

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	Materials Processing Fundamentals Symposium held at the TMS Annual Meeting and Exhibition, 2019
Country	United States
City	San Antonio
Period	3/10/19 → 3/14/19

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-030-05728-2_3

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Cite this

Chen, Z., Olia, H., Petrus, B., Rembold, M., Bentsman, J., & Thomas, B. (2019). Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel. In A. Allanore, G. Lambotte, S. Wagstaff, & J. Lee (Eds.), Materials Processing Fundamentals, 2019 (pp. 23-35). (Minerals, Metals and Materials Series). Springer International Publishing. https://doi.org/10.1007/978-3-030-05728-2_3

Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel. / Chen, Zhelin; Olia, Hamed; Petrus, Bryan; Rembold, Madeline; Bentsman, Joseph; Thomas, Brian.

Materials Processing Fundamentals, 2019. ed. / Antoine Allanore; Guillaume Lambotte; Samuel Wagstaff; Jonghyun Lee. Springer International Publishing, 2019. p. 23-35 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chen, Z, Olia, H, Petrus, B, Rembold, M, Bentsman, J & Thomas, B 2019, Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel. in A Allanore, G Lambotte, S Wagstaff & J Lee (eds), Materials Processing Fundamentals, 2019. Minerals, Metals and Materials Series, Springer International Publishing, pp. 23-35, Materials Processing Fundamentals Symposium held at the TMS Annual Meeting and Exhibition, 2019, San Antonio, United States, 3/10/19. https://doi.org/10.1007/978-3-030-05728-2_3

Chen, Zhelin ; Olia, Hamed ; Petrus, Bryan ; Rembold, Madeline ; Bentsman, Joseph ; Thomas, Brian. / Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel. Materials Processing Fundamentals, 2019. editor / Antoine Allanore ; Guillaume Lambotte ; Samuel Wagstaff ; Jonghyun Lee. Springer International Publishing, 2019. pp. 23-35 (Minerals, Metals and Materials Series).

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title = "Dynamic Modeling of Unsteady Bulging in Continuous Casting of Steel",

abstract = "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.",

keywords = "Continuous casting, Dynamic bulging model, Mold level fluctuation, Stopper rod flow model, Unsteady bulging",

author = "Zhelin Chen and Hamed Olia and Bryan Petrus and Madeline Rembold and Joseph Bentsman and Brian Thomas",

note = "Funding Information: Acknowledgements 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.; Materials Processing Fundamentals Symposium held at the TMS Annual Meeting and Exhibition, 2019 ; Conference date: 10-03-2019 Through 14-03-2019",

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N1 - Funding Information: Acknowledgements 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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N2 - 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.

AB - 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.

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