Influence of the Submerged Entry Nozzle’s Bottom Well on the Characteristics of Its Exit Jets

In vertical continuous casting machines the liquid steel from the tundish is poured into the mold through the Submerged Entry Nozzle (SEN). The shape and direction of the SEN exit jets affect the liquid steel dynamics inside the mold. This work quantifies the effect of the SEN pool on the principal...

Full description

Saved in:
Bibliographic Details
Published in:Metals (Basel ) 2021-03, Vol.11 (3), p.398
Main Authors: Gonzalez-Trejo, Jesus, Real-Ramirez, Cesar A., Miranda-Tello, Jose Raul, Gabbasov, Ruslan, Carvajal-Mariscal, Ignacio, Sanchez-Silva, Florencio, Cervantes-de-la-Torre, Francisco
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Continuous casting
Continuous casting machines
Design
Experiments
Flow distribution
Fluid flow
Fluid mechanics
Hydrodynamics
Iron and steel making
Jets
Mathematical models
Molds
Nozzles
Simulation
Solidification
steel continuous casting
submerged entry nozzle
turbulence
Turbulence models
Vortices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In vertical continuous casting machines the liquid steel from the tundish is poured into the mold through the Submerged Entry Nozzle (SEN). The shape and direction of the SEN exit jets affect the liquid steel dynamics inside the mold. This work quantifies the effect of the SEN pool on the principal characteristics of the jets emerging from it, precisely, the shape, the spread angles, and the mold impact point. Experimental and numerical simulations were carried out using a SEN simplified model, a square-shaped bore nozzle with square-shaped outlet ports whose length is minimal. These experiments showed two well-defined behaviors. When a single vortex dominates the hydrodynamics inside the simplified SEN, the exit jets spread out and are misaligned about the mold’s central plane. On the contrary, when the inner flow pattern shows two vortexes, the exit jets are compact and parallel to the mold wide walls. The measured difference on the jet’s falling angles is 5°, approximately, which implies that in an actual casting machine, the impingement point at the narrow mold wall would have a variation of 0.150 m. This hydrodynamic analysis would help design new SENs for continuous casting machines that improve steel quality.
ISSN:2075-4701
2075-4701
DOI:10.3390/met11030398