Premium
Mathematical Analysis of the Touching Inclusions Parameters at the Tundish Free Surface to Predict More Realistic Inclusion Removal Rates
Author(s) -
Gutiérrez Enif,
Garcia-Hernandez Saúl,
Barreto José de Jesús
Publication year - 2019
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201900328
Subject(s) - tundish , steelmaking , inclusion (mineral) , continuous casting , mechanics , flow (mathematics) , materials science , water model , free surface , metallurgy , work (physics) , volumetric flow rate , mathematics , engineering , mechanical engineering , mineralogy , geology , chemistry , physics , computational chemistry , molecular dynamics
Steel cleanliness is an essential assignment during steelmaking practice to improve the steel quality; this means that the inclusions count during the casting operations must be low. Inclusions removal in the tundish is mainly studied by simulation, assuming that “if an inclusion touches the tundish free surface, it is considered removed,” predicting high removal rates for all sizes and showing large discrepancies when compared with the experimental results. Searching for a realistic accordance between inclusions removal rates obtained by mathematical modeling and the experimental results, this work has the main purpose to predict the inclusion removal count at the free surface in a more realistic fashion in a tundish using flow‐control devices. The results show an over‐estimation up to 80% on the reported removal rates for small inclusions, which is attributed to the use of the Random Walk Model (RWM); however, if the RWM is not used, the inclusions behavior and its removal distribution show severe inconsistencies related to the fluid dynamics. Due to this, a new removal criterion used along with the RWM is applied, predicting more realistic removal rates in agreement with the experimental results and theoretical limits.