The Oxidation Behaviors of Indefinite Chill Roll and High Speed Steel Materials

Indefinite chill (IC) roll and high speed steel (HSS) materials have been widely employed to manufacture work rolls as latter and former stands in hot rolling mills. The oxidation of work rolls is of importance for the surface quality of the rolled workpieces. The isothermal oxidation of the IC and...

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Bibliographic Details
Published in:Metals (Basel ) 2020-08, Vol.10 (8), p.1095
Main Authors: Hao, Liang, Li, Tuanjie, Xie, Zhongliang, Duan, Qingjuan, Zhang, Guoyuan
Format: Article
Language:English
Subjects:
Chill rolls
Crack propagation
Graphite
Heat
high speed steel
High speed tool steels
Hot rolling
Hot rolling mills
indefinite chill roll
Microstructure
Morphology
Oxidation
oxidation behavior
Phases
Reaction kinetics
Rolling mills
Scale (corrosion)
Supports
Surface properties
Temperature
thermogravimetric analyzer (TGA)
Work rolls
Workpieces
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Summary:Indefinite chill (IC) roll and high speed steel (HSS) materials have been widely employed to manufacture work rolls as latter and former stands in hot rolling mills. The oxidation of work rolls is of importance for the surface quality of the rolled workpieces. The isothermal oxidation of the IC and HSS materials was conducted at 650 °C and 700 °C in both dry air and humid air. The isothermal oxidation curves indicate that HSS shows faster kinetics than the IC materials in dry air, whereas the opposite occurred in humid air. The oxide scales of the IC materials after the oxidation in both dry air and humid air are made up of two oxide phases. Two oxide phases were found when the HSS oxidized in the dry air and three oxide phases were found when oxidized in the humid air.
ISSN:2075-4701
2075-4701
DOI:10.3390/met10081095