Relation between Surface Quality of Cast Strips and Meniscus Profile of Molten Pool in the Twin Roll Casting Process.

Mizoguchi, Toshiaki; Miyazawa, Ken-ichi; Ueshima, Yoshiyuki

doi:10.2355/isijinternational.36.417

Cited by 17 publications

(12 citation statements)

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“…SDAS was 1.3 m and the cooling rate 1.5 × 10 4 K/s. A similar cooling rate is observed in the strip casting process [8]. On the other structures it must be pointed out that the columnar-cellular can be observed in the laser melting, requires a 10 5 K/s cooling rate [9].…”

Section: Results and Commentssupporting

confidence: 52%

Microstructural analysis of AISI 304 bars welded with high speed pulsed discharges

Casalino

Panella

2007

Journal of Materials Processing Technology

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Section: Results and Commentssupporting

confidence: 52%

Microstructural analysis of AISI 304 bars welded with high speed pulsed discharges

Casalino

Panella

2007

Journal of Materials Processing Technology

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“…This leads to a uniform contact time of the strip across the entire roll width which is necessary to produce even solidification. [3][4][5] A high regeneration rate at the top of the pool is also required even though forced convection in the pool produces low temperature gradients in the bulk liquid, 6,7) because zones of solidified metal-skulls-may form at the surface. 8) These may be a serious source of perturbation in the process leading to numerous defects in the strip.…”

Section: Introductionmentioning

confidence: 99%

Water Modeling Evaluation of Metal Delivery in a Twin Roll Strip Caster Using Pool Level and Residence Time Distribution Measurements.

et al. 2001

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A quantitative methodology that uses a water model to evaluate fluid flow of delivery systems under various operating conditions in the pool of a twin roll strip caster is presented. The measurements of two parameters are involved: level fluctuations of the pool and residence time distribution (RTD) of the fluid near the free surface. It is shown that a nozzle geometry that produces small level fluctuations and short residence times can be identified.

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“…But their model did not take into account the solidification phenomena and also the model lacks experimental validation. The theoretical and experimental investigation of the relation between meniscus behavior and surface quality of the strip in twin roll casting were studied by several authors . Miyake et al experimentally observed that the nonuniform inflow rate and pool level fluctuation were cause of the strip thickness deviation and poor quality of the strip.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer, Solidification, and Microstructural Evolution in Al33Cu Alloy During the Starting of Twin Roll Strip Casting

Sahoo

Ghosh

2013

steel research int.

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Numerical simulation of transient fluid flow, heat transfer, and solidification during the starting of high speed twin roll strip casting was carried out to estimate the time required for steady state condition to set in and solidification front speed during the transient stage. The solidification front speed during the transient stage was expected to be higher, leading to different microstructure and thus it is necessary to know it in comparison to that during the steady state. The free surface of the pool was tracked using volume of fluids (VOFs) approach and an enthalpy‐porosity method was employed to incorporate the phase change during solidification. Surface tension was incorporated into the momentum transfer equation and all the physical properties were treated as functions of temperature. The filling sequence and temperature profiles in the molten pool, along with the solidification front profile were numerically simulated. From the evolution of temperature profile the transient length of the cast strip was estimated. The prediction of temperature profile in the transient stage was experimentally validated using Jackson–Hunt theory. From the results of simulation the transient length of strip, which needs to be rejected for different casting speeds was estimated. It was found that when the speed is increased beyond 0.7979 up to 3.98 m s−1 the transient length did not increase appreciably.

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Relation between Surface Quality of Cast Strips and Meniscus Profile of Molten Pool in the Twin Roll Casting Process.

Cited by 17 publications

References 0 publications

Microstructural analysis of AISI 304 bars welded with high speed pulsed discharges

Microstructural analysis of AISI 304 bars welded with high speed pulsed discharges

Water Modeling Evaluation of Metal Delivery in a Twin Roll Strip Caster Using Pool Level and Residence Time Distribution Measurements.

Heat Transfer, Solidification, and Microstructural Evolution in Al33Cu Alloy During the Starting of Twin Roll Strip Casting

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