Detail publikace

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models

LEGRAND, N. LABBE, N. WEISZ-PATRAULT, D. EHRLACHER, A. LUKS, T. HORSKÝ, J.

Originální název

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper presents an analysis of roll bite heat transfers during pilot hot steel strip rolling. Two types of temperature sensors (drilled and slot sensors) implemented near roll surface are used with heat transfer models to identify interfacial heat flux, roll surface temperature and Heat Transfer Coefficient HTCroll-bite in the roll bite. It is shown that: - the slot type sensor is more efficient than the drilled type sensor to capture correctly fast roll temperature changes and heat fluxes in the bite during hot rolling but its life's duration is shorter. - average HTCroll-bite is within the range 15-26 kW/m^2/K: the higher the strip reduction (e.g. contact pressure) is, the higher the HTCroll-bite is. - scale thickness at strip surface tends to decrease heat transfers in the bite from strip to roll. - HTCroll-bite is not uniform along the roll-strip contact but seems proportional to contact pressure. - this non uniform HTCroll-bite along the contact could contribute to decrease thermal shock (so roll thermal fatigue) when the work roll enters the roll bite, in comparison to a uniform HTCroll-bite. - Heat transfer in the roll bite is mainly controlled by heat conduction due to the huge roll-strip temperature difference, while heat dissipated by friction at roll-strip interface seems negligible on these heat transfers.

Klíčová slova

hot strip rolling, roll bite heat transfer, inverse thermal analysis

Autoři

LEGRAND, N.; LABBE, N.; WEISZ-PATRAULT, D.; EHRLACHER, A.; LUKS, T.; HORSKÝ, J.

Rok RIV

2012

Vydáno

3. 2. 2012

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Ročník

504-506

Číslo

2

Stát

Švýcarská konfederace

Strany od

1043

Strany do

1048

Strany počet

6

URL

http://www.scientific.net/KEM.504-506.1043

BibTex

@article{BUT90510,
  author="Nicolas {Legrand} and Nathalie {Labbe} and Daniel {Weisz-Patrault} and Alain {Ehrlacher} and Tomáš {Luks} and Jaroslav {Horský}",
  title="Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models",
  journal="Key Engineering Materials (print)",
  year="2012",
  volume="504-506",
  number="2",
  pages="1043--1048",
  doi="10.4028/www.scientific.net/KEM.504-506.1043",
  issn="1013-9826",
  url="http://www.scientific.net/KEM.504-506.1043"
}