ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Special Issue on "Recent Progress in Inclusion/ Precipitate Engineering"
Modeling of Wall Shear Stress Induced Inclusion Transport and Removal in Multi-Strand Tundish
Vipul Kumar GuptaPradeep Kumar JhaPramod Kumar Jain
Author information
JOURNAL OPEN ACCESS FULL-TEXT HTML

2021 Volume 61 Issue 9 Pages 2445-2456

Details
Abstract

Erosion of refractory lining due to flow induced wall shear stress is one among severe problems that shop floor personnel face in continuous casting tundish operation. It decreases the lining life and increases overall operational cost. Wall shear stress due to turbulent flow is one of the major factors of erosion of lining in tundish. Inclusion generation due to erosion creates surface defects that may lead to the rejection of the final products. Turbulent inhibitor box (TIB) helps in reducing the wall shear stress by confining the turbulent flow zone and hence changes the flow pattern. In the present work, three-dimensional fluid flow study has been carried out to investigate the flow induced wall shear stress. High shear stress zones (HSSZ) are taken as potential inclusion generation sites. Different sizes of inclusions are injected from those sites and their paths are tracked. It is found that the shape of TIB significantly affects the flow induced wall shear stress and inclusion removal rate. Results indicate that tundish with TIB 3 arrangement exhibited minimum wall shear stress at all walls. TIB 2 coupled tundish gives the highest removal rate in case of bottom wall originated small size inclusions (<= 80 µm) and least removal rate in case of curve wall originated inclusions.

Information related to the author
© 2021 The Iron and Steel Institute of Japan.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
Previous article Next article
feedback
Top