Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Influence of Electro-magnetic Stirring at Mold on Negative Segregation in Continuously Cast Bloom
Kenzo AYATAKiichi NARITATakasuke MORITochiyasu OHNISHI
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1981 Volume 67 Issue 8 Pages 1278-1286


The fluid flow induced by electro-magnetic stirrer at the mold and the negative segregation caused by the fluid flow were investigated. The surface velocity of molten steel was obtained from the analysis of movie film taken by a high speed camera, and the flow velocity below the meniscus was estimated as compared with the fluid flow of low melting temperature metal. The experiment was carried out for low, middle and high carbon steels (0.13%C0.64%C).
From the experimental result, it has been found that the degree of the negative segregation increases with the increase of flow velocity and with the decrease of carbon content of steel. The maximum depth in the mushy zone washed by bulk liquid and the width of the mushy zone are calculated, and the reason of the increase of the degree of negative segregation with the decrease of carbon content of steel is considered.

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