Abstract
Mold flux plays key roles during the continuous casting process of molten steel, which accounts for the quality of final slabs. With the development of Advanced High Strength Steels (AHSS), certain amounts of Al have been added into steels that would introduce severe slag/metal interaction problems during process of continuous casting. In this article, through the studies of SHTT, IET and SEM, the melting range of mold flux was increased and the heat transfer rate was inhibited under the coordination effect of the combination of BaO and B2O3. It was found the case with BaO substituting for CaO to replace B2O3 shows the highest general heat transfer rate and lowest melting temperature. The results of slag/steel reaction experiments show that the degree of slag/steel reaction increases with the addition of C/A ratio. The latest developments for this new mold flux system were summarized with the aim to offer technical guidance for the design of new generation mold flux system for the casting of AHSS.
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