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A two-dimensional model was applied to simulate the liquid core reduction (LCR) technology of bloom CC using ANSYS software. The deformation characteristics of bloom under different liquid fraction and reducing amount are obtained. The results indicate that the main deformation condition of bloom shell is compressive strain, mainly undertaken by the liquid core, which increases with the enhancement of reducing amount. Solidified shell takes minor deformation. The longitudinalsection of bloom appears sunken and the narrow side bulges, which grow serious when the liquid fraction increases.