Performance of a Nozzle to Control Bath Level Oscillations and Turbulence of the Metal-Flux Interface in Slab Molds

Author:

González-Solórzano María1,Morales Rodolfo1,Guarneros Javier2,Muñiz-Valdés Carlos3,Nájera Bastida Alfonso4

Affiliation:

1. Department of Metallurgy, Instituto Politécnico Nacional-ESIQIE, Mexico City 07738, Mexico

2. K&E Technologies, Mexico City 07365, Mexico

3. Facultad de Ingeniería, Universidad Autónoma de Coahuila, Arteaga 25350, Mexico

4. Metallurgy Engineering, Instituto Politécnico Nacional-UPIIZ, Zacatecas 98160, Mexico

Abstract

The characterization of the turbulent flow of liquid steel in a slab mold using a commercial nozzle was carried out through physical experiments and mathematical models. Six ultrasonic sensors were located at each side of the nozzle to obtain real-time plotting of the bath levels during the experimental time. An ultrasonic transducer located in the mold, 20 mm below the meniscus, determines the velocities and the turbulent variables along with the distance from the narrow face to the position of the nozzle’s outer wall. These data, together with the mathematical simulations, demonstrated a high correlation of bath level oscillations and the time-dependent behavior of the discharging jets. The flow inside the mold shows low-frequency non-symmetric patterns without a severe turbulent in the meniscus. The source of this instability is the partial opening of the slide valve gate used to control the mass flow of liquid.

Funder

Instituto Politécnico Nacional

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Reference29 articles.

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