Research of Mold Powder for Ultra-Low Carbon Steel

摘要

This paper explained the mechanism of carbon pickup by ultra-low-carbon steels during continuous casting and indicated that the major cause of carbon pickup is the contact of the molten steel with the enriched-carbon layer of the powder. Forming of the enriched-car- bon layer is due to the existing of "carbon core". Accordingly, the measures to reduce the car- bon content and amount of the enriched-carbon layer were investigated. A kind of new powder has been developed and successfully used to minimize the carbon pickup by ultra-low carbon steels during countinuous casting.