Mould flux performance in continuous casting of steel

Mould fluxes play a critical role in continuous casting of steel, which was once perceived as a mysterious area with limited scientific understanding. This study aims to elucidate the functions and performance of mould fluxes, particularly focusing on their roles in providing thermal insulation and lubrication for the steel shell during the casting process. The methodology involves analyzing the physical properties of mould fluxes, including viscosity at elevated temperatures, percentage of crystalline phase in the slag film, and the thickness of liquid and solid slag layers. Experimental results indicate that these properties significantly influence the performance of the mould flux. Findings suggest that optimal mould flux performance is achieved through a careful balance of these parameters, enhancing the efficiency and quality of the continuous casting process. The study contributes to a deeper understanding of the operational principles behind mould fluxes, which is essential for advancing methods in steel production. This research highlights the vital functions of mould fluxes in protecting molten steel from oxidation while facilitating efficient heat transfer and lubrication during the casting process.