During the subsequent holding period, the liquid layers in the ladle undergo thermal stratification resulting from natural convection.
Thermal stratification is detrimental to quality casting.
Tap temperature, holding time, ladle preheat and ladle life significantly influence the rate of stratification. Argon gas purging through the liquid steel bath helps to generate enough bath turbulence to cause rapid thermal homogenization. Stirring with argon also enhances the mixing rate for chemical additions. Temperature after 20 minutes holding of a 130 ton steel ladle Using Fluent CFD, various processes in secondary steel making can be analyzed and optimum process parameters can be achieved. For example, effect of purging rate Vs.