Abstract
This paper reports on the re-engineering of standard five-strand tundish designs into a five-strand asymmetric tundish, which resulted in a non-uniform rate and bias for each strand. We sought to improve the casting conditions by optimizing the liquid steel flow-field in the tundish. Both a water modelling experiment and a numerical simulation were performed to analyze the flow-field according to various diversion hole diameters and injection angles. The results showed that the average residence time decreased as the diameter of the diversion holes increased. As the injection angle was increased, the average residence time initially decreased and then increased. The liquid steel from the ladle shroud rapidly extended to the #2 and #3 strands in the original tundish, which reduced the likelihood of inclusion collision and coalescence.
Highlights
Tundishes are widely used to supply and distribute liquid steel into molds during continuous casting [1,2,3]
The residence time represents how long the liquid steel stays in the tundish after it has been from theIn ladle shroud.with
This paper reported on the effects of different diversion hole diameters and injection angles on
Summary
Tundishes are widely used to supply and distribute liquid steel into molds during continuous casting [1,2,3]. Selected a multiphase model (Volume of Fluid) with a User Defined Function (UDF) to research the flow field and inclusion removal in a five-strand asymmetric tundish and proposed the difference between the UDF and the trap boundary condition in the removal of non-metallic inclusions with various diameters. Despite this lack of prior research, the Tangshan Xinbaotai Steel company in China needed to improve the production capacity of its casting. On the basis of the results, a proposed optimum diversion hole arrangement was tested in a five-strand tundish
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