Scale formed during slab reheating can be difficult to remove by high-pressure descaling, having a negative impact hot roll surface quality. A large-capacity thermogravimetric apparatus that replicates the combustion atmosphere and temperature in a slab reheat furnace was used to investigate scale formation on 430 stainless steel. Effects of reheating parameters (temperature, time and atmosphere) on oxidation kinetics were investigated. Oxidized samples were characterized by scanning electron microscopy, Raman spectroscopy and x-ray diffraction to document the microstructure and morphology of scale. Mechanisms for the formation of multi-layered oxide structures that complicate oxidation kinetics and scale removal are discussed.

Meeting Name

AISTech 2020 (2020: Aug. 31-Sep. 3, Cleveland, OH)


Materials Science and Engineering

Research Center/Lab(s)

Peaslee Steel Manufacturing Research Center

Keywords and Phrases

Transfer Bar; Oxidation Kinetics; Scale Structure; Oxide Phases

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2020 Association for Iron & Steel Technology (AIST), All rights reserved.

Publication Date

03 Sep 2020

Included in

Metallurgy Commons