"Simulation software from Ansys helped us to optimize the transition tonnage produced during the grade change to maintain our very high product quality standards."
— Mrityunjay Kumar Singh, Head-Process Modeling and Visualization / Tata Steel Ltd.
During the continuous casting of steel, casting of different grades in the same casting sequence produces transition billets. This product mix of transition billets does not conform to any of the grades and needs to be downgraded or diverted. The casting operators need to identify the extent and location of this intermixed zone in order to minimize the production and quality issues. So, a CFD simulation was carried out to predict the transition tonnage during the grade change. This model has been well-validated with experimental trials and has now been successfully used in the plant.
Billet casting to convert liquid steel to solid billets is an uncertain process with many variables; for example, the casting speed may change or certain strands may become non-functional. These factors alter the flow in the tundish and change the transition tonnage. Predicting and optimizing the transition tonnage during the grade change under different plant scenarios is a big challenge, so a CFD model was developed to better understand this process.
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