New method to measure metallurgical length and application to improve computational models

Bryan Petrus, Danny Harnmon, Megan Miller, Bob Williams, Adam Zewe, Zhelin Chen, Joseph Bentsman, Brian G. Thomas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Accurate knowledge of metallurgical length (ML), the distance where solidification is sufficiently complete, is important to control the positioning of soft reduction and containment rolls, in order to avoid centerline segregation, bulging, and whale formation during continuous casting of steel. Previous methods to measure ML are surveyed briefly, and typically involve expensive instrumentation of support rolls. In this work, a new "sensor-less" method infers the ML by observing when a particular roll first starts turning during small step increases in casting speed. This method was applied to the thin (90 mm) slab caster at Nucor Decatur and the trial results were used to calibrate a real-time computational heat-transfer model, which is currently in use at this caster. The calibrated model was then validated against published measurements, based on strain gauges installed on support rolls, at a conventional (260 mm) slab caster. AISTech 2015 Proceedings

Original languageEnglish (US)
Title of host publicationAISTech 2015 - Proceedings of the Iron and Steel Technology Conference and ICSTI 2015
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages3238-3248
Number of pages11
ISBN (Electronic)9781935117476
StatePublished - 2015
EventAISTech 2015 Iron and Steel Technology Conference and 7th International Conference on the Science and Technology of Ironmaking, ICSTI 2015 - Cleveland, United States
Duration: May 4 2015May 7 2015

Publication series

NameAISTech - Iron and Steel Technology Conference Proceedings
Volume3
ISSN (Print)1551-6997

Other

OtherAISTech 2015 Iron and Steel Technology Conference and 7th International Conference on the Science and Technology of Ironmaking, ICSTI 2015
CountryUnited States
CityCleveland
Period5/4/155/7/15

Keywords

  • Continuous casting
  • Solidification

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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