Abstract
Scale formation during continuous casting is visible in the areas of secondary cooling and strand discharge. To reveal a clear dependency of scale layer composition on the steel composition, under H2O-N2 atmosphere, the phase stability diagrams of iron oxide and its intermediate compound with other metal oxides are established from 750°C-1300°C, and the oxide phase composition within scale layer for different type and content of alloying elements are investigated. At higher H2O partial pressure, the stable oxide phases are FeO or FeO and a spinel (or silicate) phase with the increase of alloying element content in steel composition, whereas only the spinel (or silicate) phase is stable for any alloying element content at lower H2O partial pressure. For alloyed steel, a spinel or silicate phase can be formed inside the scale layer in addition to wustite during continuous casting.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
