Experimental Study of the Mold Flow Induced by a Swirling Flow Nozzle and Electromagnetic Stirring for Continuous Casting of Round Blooms

Journal Article · Mon Apr 15 00:00:00 EDT 2019 · Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/S11663-018-1491-5· OSTI ID:22933670

Schurmann, Dennis; Willers, Bernd ^[1]; Hackl, Gernot; Tang, Yong ^[2]; Eckert, Sven ^[1]

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1. Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR) (Germany)
2. RHI Magnesita (Austria)

This study focuses on an experimental investigation of the fluid flow in round bloom continuous casting using a 1:3 model of the industrial casting process. A swirling flow nozzle, represented by the specific design of the RHI Magnesita GYRONOZZLE, is used to produce a swirling motion in the cylindrical mold. The test section is integrated into the Mini-LIMMCAST facility at HZDR, which is operated at room temperature using the ternary alloy GaInSn. Systematic measurements of horizontal and vertical velocity profiles are performed by means of the Ultrasound Doppler Velocimetry. The second part of the study focuses on the interaction between the flow driven by the GYRONOZZLE and concurrent electromagnetic stirring in the mold (M-EMS) by applying rotating magnetic fields (RMFs) at different magnetic flux densities. The effect of the GYRONOZZLE on the flow pattern inside the mold is examined with and without superimposed RMFs and compared to those of a standard single-port nozzle. The measurements reveal that the GYRONOZZLE induces a swirling flow in the whole mold. It is further shown that the influence of a simultaneously applied RMF is mainly restricted to the lower part of the mold since the transport of angular momentum to the top is suppressed by the jets pouring out from the GYRONOZZLE.

• OSTI ID: 22933670
• Journal Information: Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science, Vol. 50, Issue 2; Other Information: Copyright (c) 2019 The Minerals, Metals & Materials Society and ASM International; Country of input: International Atomic Energy Agency (IAEA); ISSN 1073-5615
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANGULAR MOMENTUM
CASTING
CASTING MOLDS
CYLINDRICAL CONFIGURATION
FLUX DENSITY
MAGNETIC FIELDS
MAGNETIC FLUX
NOZZLES
STIRRING
TEMPERATURE RANGE 0273-0400 K
TERNARY ALLOY SYSTEMS
VELOCITY
VORTEX FLOW