Abstract
The tundish plays a key role in the process of continuous steel casting (CSC), as it ensures a stable flow of steel to the mould. Therefore, particular attention is paid to the behavior of liquid steel in the tundish. A wedge-shape tundish with a nominal capacity of 30 tons was tested. The present study has examined different variants of subflux turbulence controller (STC) and ladle shroud (LS) positions relative to one another. For the designed continuous casting variants with the modified tundish pouring zones, numerical simulations of liquid steel behavior were performed. From the computer simulations results, motion, velocity magnitude, and temperature of liquid steel were obtained. Moreover the shares of stagnant volume flow, dispersed plug flow, well-mixed volume flow and transient zone were calculated. It is possible to effectively modify the hydrodynamic conditions by appropriate selection the position of the STC and LS.
Highlights
The tundish plays a key role in the process of continuous steel casting (CSC), as it ensures a stable inflow of steel to the mould
Particular attention is paid to the behavior of the tundish powder and the ceramic tundish working layer, which may cause the formation of additional non-metallic inclusions
The tundish, as a flow reactor, is distinguished by the fact that any interference in its working space will result in a modification of the hydrodynamic conditions
Summary
The tundish plays a key role in the process of continuous steel casting (CSC), as it ensures a stable inflow of steel to the mould Slabs formed in this process should exhibit the required quality, which is determined by tundish operation, among other factors. An STC is installed in the axis of the feeding stream flowing out of the steelmaking ladle. In industrial conditions, it may happen that the steel stream does not flow perfectly into the STC’s centre due an incorrect installation of the STC in the tundish or the ladle shroud. Metals 2019, 9, 68 conditions, it may happen that the steel stream does not flow perfectly into the STC’s centre due an incorrect installation of the STC in the tundish or the ladle shroud (LS) in the steelmaking ladle.
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