On-line Measurement of Solidification Shell Thickness and Estimation of Crater-end Shape of CC-slabs by Electromagnetic Ultrasonic Method

Yoshida, Tôru; Atsumi, Tadashi; Ohashi, Wakana; Kagaya, K.; Tsubakihara, Osamu; Soga, Hiromu; Kawashima, Katsuhiro

doi:10.2355/tetsutohagane1955.70.9_1123

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…However, many researches have mainly focused on steady bulging [5][6][7][8][9][10][11][12][13] rather than unsteady bulging. So its origin and detailed mechanisms have not been verified and even measurements has been limited.…”

Section: Introductionmentioning

confidence: 99%

The Mechanism of Unsteady Bulging and Its Analysis with the Finite Element Method for Continuously Cast Steel.

Lee

Yim

2000

ISIJ International

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The movements of the driven rolls were measured during the continuous casting of steel and their fluctuations were compared with other signals such as the casting speed and the mold level. From the observation of large fluctuations in the movements of the driven rolls and the unevenness in the thickness of the solid shell, it is proposed that the unevenness in the thickness of the solid shell is the main reason for unsteady bulging during the casting of medium carbon steel. A two-dimensional model over the successive rolls was used to calculate the bulging profile and its changes with time, during the fluctuations in the casting speed, with the finite element method. As a result, the calculations were in good agreement with the experimental results, and, it could be concluded that the period of unsteady bulging is greatly influenced by the roll pitch, therefore, depends on the locations where different roll pitches occur, and is somewhat affected by casting speed variations. Finally, based on the calculations and the experimental results, the effect of the unsteady bulging on the mold level was discussed.KEY WORDS: continuous casting; driven roll; unsteady bulging; bulging over successive rolls; liquid level fluctuation; unevenness of shell thickness; roll pitch.

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Section: Introductionmentioning

confidence: 99%

The Mechanism of Unsteady Bulging and Its Analysis with the Finite Element Method for Continuously Cast Steel.

Lee

Yim

2000

ISIJ International

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“…14 Resonance spectra ofthe SiCtlTi-6AI-4V unidirectional composite at various temperatures for Ag vibration mo des (left) and B1g vibration modes (right). (After Ogi et al, 2003b.)…”

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confidence: 99%

EMATs for Science and Industry

Hirao¹,

Ogi²

2003

270

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Thermomechanical Simulation of Some Types of Steady Continuous Casting Processes

Inoue¹,

Ju²

1991

Advances in Continuum Mechanics

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On-line Measurement of Solidification Shell Thickness and Estimation of Crater-end Shape of CC-slabs by Electromagnetic Ultrasonic Method

Cited by 8 publications

References 2 publications

The Mechanism of Unsteady Bulging and Its Analysis with the Finite Element Method for Continuously Cast Steel.

The Mechanism of Unsteady Bulging and Its Analysis with the Finite Element Method for Continuously Cast Steel.

EMATs for Science and Industry

Thermomechanical Simulation of Some Types of Steady Continuous Casting Processes

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