The Effect of Alloy and Flux Addition Practices on Inclusion Composition in Si-Mn-Killed Low-C Steel

This work aims to understand the effect of different alloying routes used in the industry on inclusion chemistry for Si-Mn-killed steels. Inclusion chemistry for heats killed at EAF tap and heats killed in the presence of slag at the ladle metallurgy furnace are studied at different time intervals using automated feature analysis and energy-dispersive x-ray microanalysis. FactSage is used to calculate equilibrium inclusion chemistry and oxygen content and compared with industrial data. Processing conditions from heats that clogged at the caster are used to explain why dissolved oxygen measurement in liquid steel is not the best indicator of castability.

Authors:

Abhishek Bhansali | Nucor Steel–Berkeley
 

Helmut Oltmann | Nucor Steel–Berkeley
 

Eugene Pretorius | Nucor Corp.
 

Session Chairs:

Bill Jones | U. S. Steel - Granite City Works
 

Sunday Abraham | SSAB Iowa Inc.