Observations on mold corner temperatures measured using thermocouples

T. J. Piccone, I. Sohn, T. T. Natarajan, E. J. Serrano

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Examination of thermocouple data from thermocouples near the strand corners in the casting mold has revealed that the corner temperatures can oscillate during steady state casting. The oscillation frequency is proportional to the casting speed, and is unrelated to the strand width. Thermocouples at the same elevation on opposite sides of a narrow face display periodic signals that are out of phase, while thermocouples in the same corner at different elevations have signals that show a phase or time lag between them. The time lag is less than half of the value obtained by dividing the distance between thermocouples by the casting speed. Similar oscillations have been observed on four different slab casters of different design. These observations and supporting calculations suggest that the cause of the temperature oscillations may be slowly varying fluid flow conditions in the casting mold.

Original languageEnglish
Pages (from-to)13-24
Number of pages12
JournalAISTech - Iron and Steel Technology Conference Proceedings
Volume2
Publication statusPublished - 2007 Aug 31
EventAISTech 2007 - Iron and Steel Technology Conference - Indianapolis, IN, United States
Duration: 2007 May 72007 May 10

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Thermocouples
Casting
Temperature
Flow of fluids

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

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title = "Observations on mold corner temperatures measured using thermocouples",
abstract = "Examination of thermocouple data from thermocouples near the strand corners in the casting mold has revealed that the corner temperatures can oscillate during steady state casting. The oscillation frequency is proportional to the casting speed, and is unrelated to the strand width. Thermocouples at the same elevation on opposite sides of a narrow face display periodic signals that are out of phase, while thermocouples in the same corner at different elevations have signals that show a phase or time lag between them. The time lag is less than half of the value obtained by dividing the distance between thermocouples by the casting speed. Similar oscillations have been observed on four different slab casters of different design. These observations and supporting calculations suggest that the cause of the temperature oscillations may be slowly varying fluid flow conditions in the casting mold.",
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Observations on mold corner temperatures measured using thermocouples. / Piccone, T. J.; Sohn, I.; Natarajan, T. T.; Serrano, E. J.

In: AISTech - Iron and Steel Technology Conference Proceedings, Vol. 2, 31.08.2007, p. 13-24.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Observations on mold corner temperatures measured using thermocouples

AU - Piccone, T. J.

AU - Sohn, I.

AU - Natarajan, T. T.

AU - Serrano, E. J.

PY - 2007/8/31

Y1 - 2007/8/31

N2 - Examination of thermocouple data from thermocouples near the strand corners in the casting mold has revealed that the corner temperatures can oscillate during steady state casting. The oscillation frequency is proportional to the casting speed, and is unrelated to the strand width. Thermocouples at the same elevation on opposite sides of a narrow face display periodic signals that are out of phase, while thermocouples in the same corner at different elevations have signals that show a phase or time lag between them. The time lag is less than half of the value obtained by dividing the distance between thermocouples by the casting speed. Similar oscillations have been observed on four different slab casters of different design. These observations and supporting calculations suggest that the cause of the temperature oscillations may be slowly varying fluid flow conditions in the casting mold.

AB - Examination of thermocouple data from thermocouples near the strand corners in the casting mold has revealed that the corner temperatures can oscillate during steady state casting. The oscillation frequency is proportional to the casting speed, and is unrelated to the strand width. Thermocouples at the same elevation on opposite sides of a narrow face display periodic signals that are out of phase, while thermocouples in the same corner at different elevations have signals that show a phase or time lag between them. The time lag is less than half of the value obtained by dividing the distance between thermocouples by the casting speed. Similar oscillations have been observed on four different slab casters of different design. These observations and supporting calculations suggest that the cause of the temperature oscillations may be slowly varying fluid flow conditions in the casting mold.

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