Effect of Temperature Change on the Steel Flow in the Five-Strand Asymmetric Tundish Using Numerical Modelling

Abstract

Numerical modelling is becoming an essential part of research in the field of steel metallurgy at present. In numerical modelling, the operating equipment is replaced by a mathematical model, which consists of a system of partial differential equations. Numerical modelling is used to display processes and results that cannot be monitored under operating conditions. From numerical modelling we can obtain the results of the flow field, we can monitor the change in temperature and monitor the wear of the refractory lining, etc. This paper deals with numerical modelling of steel flow in the tundish. The tundish is a very important part of continuous casting. It supplies liquid steel during the ladle change and distributes steel between casting strands. The tundishes are made of a welded steel shell and lined with a refractory material. During casting steel, the tundish is the last reactor where it is possible to influence the quality and purity of the cast steel. It is necessary to know the processes in the tundish. This presented paper compares the results obtained by flowing steel in the tundish at non-isothermal conditions. A five-strand asymmetric tundish for bloom casting was used for numerical simulations. The paper also provides an overview of the issues of numerical simulations and their applicability in practice. Fluent software, which is part of the ANSYS package, was used for numerical simulations.

Optimization of the Circular Channel Size and the A.C. Magnetic Field Parameters for Application in a Channel-Type Induction-Heating Tundish

“…The tundish, working as a buffer and distributor of molten steel between the ladle and continuous casting mold, plays a key role in ensuring continuous metal casting [3][4][5]. To obtain ideal fluid flow characteristics in the tundish, flow control devices, such as weirs, dams, baffles with inclined holes, and turbulence inhibitors, have been widely used in the continuous casting tundish [6][7][8][9]. All of them are designed to increase the residence times and plug flow volume of molten steel in the tundish for enhancing inclusion removal from the molten steel.…”