9th ECCC European Continuous Casting Conference – ECCC 2017

In order to decrease the mould level fluctuation the casting parameters such as casting speed, mould powder and oscillation type have to be optimized. The general full factorial design of experiments were successfully carried out two times. In these experiments two different mould powder and sinusoidal/non-sinusoidal oscillation types from high to low casting speeds were investigated in-situ continuous casting. Although the basicity of mould powders is same; the additives of mould powders are different from each other. The standard deviations of mould level fluctuation were investigated by using ANOVA. The mould powder and casting speed are resulted to be statistically important variables; on the other hand, the oscillation type is considered as inefficient. The error of ANOVA showed that there is a significant variable that has an influence on mould level fluctuation. According to literature reviews this significant variable can be bulging in upper secondary cooling zone. The optimum conditions to achieve the lowest mould level fluctuation is mould powder with Na2O, sinusoidal type at casting speed 1,20 meter/minute.