Optimization of Industrial Casting Processes

Cockcroft, S. L.

doi:10.3390/met10030360

Cited by 2 publications

(2 citation statements)

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“…V s = 0.624 ϕ −0.696 lump h 0.567 lump (11) where V s is the steel surface velocity in m/s, ϕ lump is the lump diameter in mm, and h lump is the difference in lump height in mm. Casting parameters in industrial trials are the same as in the numerical simulation and given in Table 2.…”

Section: Nail Board Measurementsmentioning

confidence: 99%

“…In addition, the molten steel flow on the top surface is covered with a liquid slag layer of mold powder, which can be regarded as a multi-phase and multi-physical field coupling flow of high-temperature stratified melt. The transient flow characteristics of the slag–steel interface, such as strong surface velocity, top surface level profile (TSLP) [ 2 , 3 ], standing wave height [ 4 , 5 ], instantaneous distribution of vortex [ 6 , 7 , 8 ], and instantaneous level fluctuation [ 9 , 10 ], directly affect the occurrence of slag entrainment and the quality of the steel slabs [ 11 ]. Therefore, understanding the transient variation characteristics of molten steel flow on the top surface of a mold is essential and indispensable for industrial engineers.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modeling of Transient Flow Characteristics on the Top Surface of a Steel Slab Continuous Casting Strand Using a Large Eddy Simulation Combined with Volume of Fluid Model

Tian,

Zhou,

Wang

et al. 2023

Materials

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In the current study, the transient flow characteristics on the top surface of a steel slab continuous casting strand were numerically investigated using a large eddy simulation combined with volume of fluid (LES + VOF) model. The validation of numerical simulation was verified via nail board measurement in the industrial continuous casting mold. The effects of casting speed on the top surface level profile and the instantaneous distribution of vortex were discussed. The level variation profile migrated after a period of time, moving from one side of the wide face of the mold to the other. The wave height and transient variation degree of the standing wave increased with an increase in the casting speed. The region near the SEN was more likely to promote the formation of vortices. The vortex generation became easier when the vorticity peaks were concentrated on the outer edge of the low-speed confluence area near the submerged entry nozzle. In addition, the effect of surface velocity on the instantaneous level fluctuation was analyzed. The frequency of level fluctuations was highest at 3~4 mm, and the high-frequency range of velocity fluctuation was 20~60 mm/s at 0.9 m/min casting speed for a 1500 mm × 200 mm caster section. The linear relationship between the level fluctuation and surface velocity magnitude was obtained. The present work aimed at evaluating the dynamic problem of the standing wave at the liquid powder–molten steel interface on the top surface of the mold, which is helpful in optimizing the casting parameters for regular casting practice and improving the quality of the steel slabs.

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Section: Nail Board Measurementsmentioning

confidence: 99%