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Study of the scale behaviour in the finishing mill to improvethe strip surface quality*

Published online by Cambridge University Press:  15 October 2010

D. Espinosa ,
G. Lannoo ,
J. Malbrancke ,
G. Moreas  and
M. Picard
D. Espinosa
Affiliation:
CRM (Centre for Research in Metallurgy), Technologiepark 903, 9052 Zwijnaarde, Belgium
G. Lannoo
Affiliation:
CRM (Centre for Research in Metallurgy), Technologiepark 903, 9052 Zwijnaarde, Belgium
J. Malbrancke
Affiliation:
CRM (Centre for Research in Metallurgy), Technologiepark 903, 9052 Zwijnaarde, Belgium
G. Moreas
Affiliation:
CRM (Centre for Research in Metallurgy), Technologiepark 903, 9052 Zwijnaarde, Belgium
M. Picard
Affiliation:
ArcelorMittal R&D Maizières, BP 30320, 57283 Maizières-lès-Metz Cedex, France
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Abstract

The cracking behaviour of the oxide layer formed during hot rolling was studied togetherwith different combinations of process parameters in order to find their single influenceon the surface quality and formation of oxide defects. Several trials were performed onthe CRM pilot line to study in detail the impact of strip reduction, strip temperature,entry scale thickness, roll degradation, lubrication, skin cooling, chemical compositionand humidity on the scale behaviour. In general, the degree of deformation, entry scalethickness and rolling temperatures are the most important parameters and the importancedecreases in that order.

Keywords

Scale behaviourSurface qualityOxide scaleHot rollingScale failure.Le comportement de couchela qualité de surfacela calaminele laminage à chaud.
Type
Research Article
Information
Metallurgical Research & Technology , Volume 107 , Issue 6 , June 2010 , pp. 225 - 235
Copyright
© EDP Sciences

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References

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