The Linear-motor Type In-mold Electromagnetic Stirring Technique for the Slab Continuous Caster

Nobuyuki Genma; Toshiyuki Soejima; Tadashi Saito; Masayasu Kimura; Yasuo Kaihara; Hirohiko Fukumoto; Kenzo Ayata

doi:10.2355/isijinternational.29.1056

Nobuyuki Genma, Toshiyuki Soejima, Tadashi Saito, Masayasu Kimura, Yasuo Kaihara, Hirohiko Fukumoto, Kenzo Ayata

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Keywords: linear-motor type in-mold electromagnetic stirring (M-EMS), downward longitudinal stirring, non metallic inclusion, pinhole, curved-type slab continuous caster, three-dimensional magnetic field analysis, flux entrainment three-dimensional fluid flow analysis, penetration depth

JOURNAL FREE ACCESS

1989 Volume 29 Issue 12 Pages 1056-1062

DOI https://doi.org/10.2355/isijinternational.29.1056

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Abstract

Conducting downward longitudinal stirring by the use of linear-motor type In-mold Electromagnetic Stirrer (M-EMS), it was possible to control the molten steel flow within the mold and to reduce inclusions and pinholes at the inside t/8 accumulation zone of the curved-type slab continuous caster.
The reason have proved from the investigation of flow pattern in the mold and three-dimensional flow analysis; that is the M-EMS downward longitudinal stirring reduces the penetration depth of outlet molten steel flow from the nozzle and decelerates the flow-rates at the meniscus.

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