Influence of Subflux Turbulence Controller and Ladle Shroud Asymmetric Using on Hydrodynamic Conditions in One Strand Slab Tundish

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.

Archives of Metallurgy and Materials

“…as mentioned earlier treating ladle shroud as a flow control device which has an effect on liquid steel behaviour is one of the subjects on which scientists' attention is focused. Finding the right ladle shroud is a complex task, which consists of, among others, determination of share of individual flows, liquid steel impact on slag layer, impact of pouring stream on tundish refractory lining, nonmetallic inclusions removal, temperature distribution in tundish or calculating of the transition zone and the mass of the slab with mixed chemical composition [14][15][16][17][18][19][20][22][23][24]35].…”

“…Intensive scientific research popularised the use of trumpet (TLS) [14][15], dissipative (DLS) [16][17][18] and swirling ladle shrouds (SLS) [19][20][21] as devices controlling the flow, but the basic feature of these ladle shrouds is that they begin and end with one hole. Several studies have presented an analysis of the impact of modifying the ladle shroud by including a larger number of holes in the shroud, but the obtained results were not sufficiently satisfactory [22][23][24]. The presented article offers a new design of a ladle shroud placed in a one-strand tundish with three holes placed in a special dome separating the steel flow and steeped in a metal bath.…”

Optimization of Industrial Casting Processes

“…The study by Cwudziński [1] undertook an examination of the impact of different subsurface turbulence controllers (STC) and ladle shrouds (LS) on fluid flow in a 30 ton wedge-shaped tundish. The paper outlines the critical role that the tundish plays in continuous casting operations as it acts to both distribute the liquid metal to the mold(s) and serve as a reservoir of molten metal to allow continuous operation during the switching of ladles.…”

Molten Steel Flow, Heat Transfer and Inclusion Distribution in a Single-Strand Continuous Casting Tundish with Induction Heating

“…In the continuous casting process, the tundish is not only a distributor of molten steel pouring from ladle to mold, but also a reaction vessel to ensure the homogenization of temperature and composition for molten steel [1,2]. Additionally, the stability of the pouring temperature of the molten steel in the tundish is an essential factor affecting the productivity of the casting machine and the quality of the slab [3].…”