Billet oxidation in oxygen-enriched combustion

Abstract

To research the oxidation status of billets in a reheating furnace when oxygen-enriched combustion was used, the influence rule of oxygen-enriched combustion atmospheres on the oxidation process of billets was studied by the self-designed experimental platform in the controlled atmosphere. The morphology of the oxide layer at different temperatures was analyzed. The results show that the oxidation process is divided into a fast oxidation stage and a slow oxidation stage. In the high temperature environment, CO2 and H2O have more effect on the oxidation of billets and the billets will be badly oxidized by high concentration of CO2 and H2O. The oxide layer is mainly composed of Fe3O4 and FeO.

Keywords

• steel billets
• heating furnaces
• combustion
• oxidation