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Proceedings of the Seminar on Steelmaking, Casting and Non-Ferrous Metallurgy

ISSN 2594-5300

52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos — vol. 52, num.52 (2023)

Title

IMPROVEMENT OF MULTI-STRAND BILLET CASTER TUNDISH PERFORMANCE WITH ELECTROMAGNETIC STIRRING

IMPROVEMENT OF MULTI-STRAND BILLET CASTER TUNDISH PERFORMANCE WITH ELECTROMAGNETIC STIRRING

Authorship

Mouls, Philippe

Mouls, Philippe
Mouls, Philippe

I am this author

DOI

10.5151/2594-5300-39595

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Abstract

A NOVEL ELECTROMAGNETIC STIRRING TECHNOLOGY (EMS) IS INTRODUCED INTO A FOUR-STRAND BILLET CASTER TUNDISH. THE PURPOSE IS TO INCREASE MIXING ZONE VOLUME AND AVERAGE FLOW SPEED, AND ELIMINATE DEAD ZONES, WHILE THE MELT SURFACE SPEED IS KEPT LOW TO AVOID SLAG ENTRAPMENT. FROM A METALLURGICAL PERSPECTIVE, STRAND TEMPERATURE IS HOMOGENIZED, INCLUSION AGGREGATION AND REMOVAL ARE IMPROVED, AND THE NUMBER OF SEQUENCE CASTING HEATS INCREASED. WATER MODELING WAS CARRIED OUT TO INVESTIGATE THE FLOW CHARACTERISTICS, AS WELL AS NUMERICAL SIMULATION ON BOTH FLUID FLOW AND INCLUSION BEHAVIOR. PILOT TESTING WAS CARRIED OUT AT ZENITH STEEL CO. LTD, CHINA. THE RESULTS SHOW THAT THIS TECHNOLOGY IS PARTICULARLY USEFUL FOR IMPROVING TEMPERATURE STABILIZATION AND STEEL CLEANLINESS IN MULTI-STRAND BILLET CASTER TUNDISH.

 

A novel electromagnetic stirring technology (EMS) is introduced into a four-strand billet caster tundish. The purpose is to increase mixing zone volume and average flow speed, and eliminate dead zones, while the melt surface speed is kept low to avoid slag entrapment. From a metallurgical perspective, strand temperature is homogenized, inclusion aggregation and removal are improved, and the number of sequence casting heats increased. Water modeling was carried out to investigate the flow characteristics, as well as numerical simulation on both fluid flow and inclusion behavior. Pilot testing was carried out at Zenith Steel Co. Ltd, China. The results show that this technology is particularly useful for improving temperature stabilization and steel cleanliness in multi-strand billet caster tundish.

Keywords

Steel cleanliness, Tundish, Inclusion, Electromagnetic stirring

Steel cleanliness, Tundish, Inclusion, Electromagnetic stirring

How to refer

Mouls, Philippe. IMPROVEMENT OF MULTI-STRAND BILLET CASTER TUNDISH PERFORMANCE WITH ELECTROMAGNETIC STIRRING , p. 856-867. In: 52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos, São Paulo, 2023.
ISSN: 2594-5300 , DOI 10.5151/2594-5300-39595