Numerical modeling of clog fragmentation during SEN clogging in steel continuous casting

Hadi Barati; Menghuai Wu; Sergiu Ilie; Abdellah Kharicha; Andreas Ludwig

doi:10.1016/j.powtec.2023.119307

Numerical modeling of clog fragmentation during SEN clogging in steel continuous casting

Hadi Barati, Menghuai Wu, Sergiu Ilie, Abdellah Kharicha, Andreas Ludwig

Chair of Simulation and Modelling of Metallurgical Processes (310)

Research output: Contribution to journal › Article › Research › peer-review

Abstract

In the study of clogging during steel continuous casting, less attention was paid to the clog fragmentation, although it always accompanies the clogging process. This paper introduces a sub-model for the clog fragmentation integrated into a comprehensive transient clogging model. In this sub-model, the intricate network of the clog is simplified as a bunch of fictitious cylinders. Each cylinder, called ‘clog finger’, contains a column of spherical non-metallic inclusions (NMIs), which are mechanically bound by sintering at contact points. The mechanical stress acting at the sintering neck between NMIs due to hydraulic forces of the melt flow is evaluated. Simulation of clogging/fragmentation in a real-scale SEN was conducted using the integrated clogging model. Comparing the simulation results with the as-clogged SEN observed in steel plants revealed a qualitative agreement. The effects of different parameters were discussed. The importance of the fragmentation and necessity to have such a sub-model were affirmed.

Original language	English
Article number	119307
Number of pages	14
Journal	Powder Technology
Volume	434.2024
Issue number	1 February
Early online date	19 Dec 2023
DOIs	https://doi.org/10.1016/j.powtec.2023.119307
Publication status	Published - 1 Feb 2024

Bibliographical note

The authors gratefully acknowledge the funding support of K1-MET
GmbH, metallurgical competence center. The research program of the
K1-MET competence center is supported by COMET (Competence Cen-
ter for Excellent Technologies), the Austrian program for competence
centers. COMET is funded by the Federal Ministry for Climate Action,
Environment, Energy, Mobility, Innovation, and Technology; the Fed-
eral Ministry for Digital and Economic Affairs; the Federal States of
Upper Austria, Tyrol, and Styria; and the Styrian Business Promotion
Agency (SFG). In addition to the public funding from COMET, this
research project was partially financed by scientific partners (Mon-
tanuniversit¨at Leoben and Johannes Kepler University Linz) and in-
dustrial partners (voestalpine Stahl Linz GmbH, voestalpine Stahl
Donawitz GmbH, and RHI Magnesita GmbH). The authors also thank
voestalpine Stahl Linz GmbH for providing topography of the as-clogged
SEN.

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Clogging
Continuous casting
Non-metallic inclusions
Fragmentation
Detachment

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Cite this

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title = "Numerical modeling of clog fragmentation during SEN clogging in steel continuous casting",

abstract = "In the study of clogging during steel continuous casting, less attention was paid to the clog fragmentation, although it always accompanies the clogging process. This paper introduces a sub-model for the clog fragmentation integrated into a comprehensive transient clogging model. In this sub-model, the intricate network of the clog is simplified as a bunch of fictitious cylinders. Each cylinder, called {\textquoteleft}clog finger{\textquoteright}, contains a column of spherical non-metallic inclusions (NMIs), which are mechanically bound by sintering at contact points. The mechanical stress acting at the sintering neck between NMIs due to hydraulic forces of the melt flow is evaluated. Simulation of clogging/fragmentation in a real-scale SEN was conducted using the integrated clogging model. Comparing the simulation results with the as-clogged SEN observed in steel plants revealed a qualitative agreement. The effects of different parameters were discussed. The importance of the fragmentation and necessity to have such a sub-model were affirmed.",

keywords = "Clogging, Continuous casting, Non-metallic inclusions, Fragmentation, Detachment",

author = "Hadi Barati and Menghuai Wu and Sergiu Ilie and Abdellah Kharicha and Andreas Ludwig",

note = "The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Cen- ter for Excellent Technologies), the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation, and Technology; the Fed- eral Ministry for Digital and Economic Affairs; the Federal States of Upper Austria, Tyrol, and Styria; and the Styrian Business Promotion Agency (SFG). In addition to the public funding from COMET, this research project was partially financed by scientific partners (Mon- tanuniversit¨at Leoben and Johannes Kepler University Linz) and in- dustrial partners (voestalpine Stahl Linz GmbH, voestalpine Stahl Donawitz GmbH, and RHI Magnesita GmbH). The authors also thank voestalpine Stahl Linz GmbH for providing topography of the as-clogged SEN. Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

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AU - Kharicha, Abdellah

AU - Ludwig, Andreas

N1 - The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Cen- ter for Excellent Technologies), the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation, and Technology; the Fed- eral Ministry for Digital and Economic Affairs; the Federal States of Upper Austria, Tyrol, and Styria; and the Styrian Business Promotion Agency (SFG). In addition to the public funding from COMET, this research project was partially financed by scientific partners (Mon- tanuniversit¨at Leoben and Johannes Kepler University Linz) and in- dustrial partners (voestalpine Stahl Linz GmbH, voestalpine Stahl Donawitz GmbH, and RHI Magnesita GmbH). The authors also thank voestalpine Stahl Linz GmbH for providing topography of the as-clogged SEN. Publisher Copyright: © 2023 Elsevier B.V.

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N2 - In the study of clogging during steel continuous casting, less attention was paid to the clog fragmentation, although it always accompanies the clogging process. This paper introduces a sub-model for the clog fragmentation integrated into a comprehensive transient clogging model. In this sub-model, the intricate network of the clog is simplified as a bunch of fictitious cylinders. Each cylinder, called ‘clog finger’, contains a column of spherical non-metallic inclusions (NMIs), which are mechanically bound by sintering at contact points. The mechanical stress acting at the sintering neck between NMIs due to hydraulic forces of the melt flow is evaluated. Simulation of clogging/fragmentation in a real-scale SEN was conducted using the integrated clogging model. Comparing the simulation results with the as-clogged SEN observed in steel plants revealed a qualitative agreement. The effects of different parameters were discussed. The importance of the fragmentation and necessity to have such a sub-model were affirmed.

AB - In the study of clogging during steel continuous casting, less attention was paid to the clog fragmentation, although it always accompanies the clogging process. This paper introduces a sub-model for the clog fragmentation integrated into a comprehensive transient clogging model. In this sub-model, the intricate network of the clog is simplified as a bunch of fictitious cylinders. Each cylinder, called ‘clog finger’, contains a column of spherical non-metallic inclusions (NMIs), which are mechanically bound by sintering at contact points. The mechanical stress acting at the sintering neck between NMIs due to hydraulic forces of the melt flow is evaluated. Simulation of clogging/fragmentation in a real-scale SEN was conducted using the integrated clogging model. Comparing the simulation results with the as-clogged SEN observed in steel plants revealed a qualitative agreement. The effects of different parameters were discussed. The importance of the fragmentation and necessity to have such a sub-model were affirmed.

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Numerical modeling of clog fragmentation during SEN clogging in steel continuous casting

Abstract

Bibliographical note

Keywords

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