Mechanisms of Formation and Removal of the Primary Oxide in a Tunnel Furnace by the Descaling on a Compact Plant for Flat Products

Abstract

These works was made in a compact strip plant (CSP) and represent an effort to decrease the amount of coils of steel rejected by a cosmetic defect called primary oxide, the morphology of the scale and its characterization by optic and scanning electron microscope was presented. Different trials were made in order to find the mechanism and phenomena of how the primary oxide is formed. The different theories of how the scale is removed by a descaling system are described. The benefits obtained from this research are mentioned.