AISTech 2022

Effect of Mold Powder Residue on Thin-Cast Slab Scale Structure Evolution During Reheating and Descaling (Room 306)

17 May 22
10:30 AM - 11:00 AM

Tracks: Hot Sheet Rolling

Speaker(s): Simon Lekakh, Missouri University of Science and Technology; Anthony Bader, Manager Product Development, Steel Dynamics Inc; Dmitry Tsvetkov, Hot Mill Metallurgist, Steel Dynamics; Richard Osei, Graduate Research Asistant , Missouri University of Science and Technology

Mold powder is an essential part of the continuous casting process as it provides strand lubrication and controls mold heat transfer. Also, the chemical makeup of mold powder can modify the surface of a cast slab, forming complex scale structures during casting and reheating. Such surface scale modification can potentially affect descaling. In this study, an industrial steel grade sample were collected and characterized to report scale evolution. Industrial descaling practice was simulated in the laboratory. Effect of surface condition on scale structure and descaling efficiency is discussed. The results prove useful information for improving steel quality.