NDLI: FEM analysis of stress on roll surface black oxide layers exfoliation in hot strip rolling

Content Provider	Springer Nature Link
Author	Li, C. S. Liu, X. H. Xu, J. Z. Wang, G. D. He, X. M.
Copyright Year	2002
Abstract	To understand the mechanism of formation and exfoliation, black oxide layers were investigated, and the effects of stress on the exfoliation were analyzed by finite element method (FEM). The roll surface on which black oxide layers form is composed mainly of Fe$_{3}$O$_{4}$, which is caused by the oxidation of the roll material itself. Cracks form and are easily propagated along M$_{3}$C- and M$_{7}$C$_{3}$-type carbides, which leads to further cracking along M$_{3}$C and M$_{7}$C$_{3}$ carbides as a result of contact stress fatigue produced by cyclic mechanical stresses that normally occur during the rolling process. Thermal fatigue of the roll surface is produced by the thermal cycles created alternately by contact with the hot strip and the cooling water on the roll. The generation and propagation of cracks in the black oxide layers during rolling is promoted by circumference compressive stress at roll surface. Under this stress, the exfoliation of the black oxide layers happens on the roll surface.
Starting Page	215
Ending Page	219
Page Count	5
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	11
Issue Number	2
e-ISSN	15441024
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	black oxide layers FEM hot strip rolling roll stress Characterization and Evaluation of Materials Materials Science Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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