The control of initial solidification by the imposition of a pulsative AC electromagnetic field

Tani, Masahiro; Tanaka, Jim; Yamasaki, Norimasa; Fujisaki, K.; Anzai, Einao; Isobe, K.; Miyazawa, Ken-ichi

doi:10.1051/metal:2001100

Cited by 2 publications

(1 citation statement)

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“…Over the last 10 years the attention of the scientific and industrial research has been focused, with increasing interest, on the Applied MHD Technologies (Albano et al , 2000; Garnier, 2000; Li et al , 1996; Tani et al , 2000). Several applications, such as Electromagnetic Stirring, Braking and Shaping, have been studied in order to improve the steel quality (Davidson, 1994; Idogawa et al , 1996; Negrini et al , 2000; Takeuchi et al , 1991).…”

Section: Introductionmentioning

confidence: 99%

Influence of the electro‐magnetic stirring on the boundary layer of a molten steel pool

Fabbri

Galante

Negrini

et al. 2003

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Electro‐magnetic stirrers, applied to the mold of a continuous caster, induces electromagnetic forces that influence the steel flow pattern modifying the casting parameters. The steel quality has been highly improved by the application of this magneto‐hydro‐dynamic (MHD) technique. Anyway, the complexity of the MHD interaction made difficult the complete comprehension of the factors that contribute to eliminate the defects due to the inclusions in the cast products. The optimization of the MHD techniques is still the object of a large research effort, which utilizes both experimental activity and numerical simulation. In this paper, the numerical simulation of the 2D flow pattern of the molten steel in a mold for billets has been done. The attention is focused on the gradient of the velocity of the molten steel near the wall and on the effects that the gradient change determines on the inclusions, which are present in the metallic pool. Actually the increase of the velocity gradient corresponds to the increase of the forces that can clean the solidifying shell from the inclusions.

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