Abstract
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.
