Raw Materials & Steelmaking
This metallic feedstock typically contains the highest percentage of iron units while minimizing residual elements.
What is DRI/HBI?
This piece of equipment is responsible for final chemistry trimming and temperature control before casting.
What is the Ladle Metallurgy Furnace (LMF)?
This consumable is responsible for lubrication, insulation, and heat transfer control inside the caster mold
What is mold powder?
This technology adjusts roll geometry to control strip profile and flatness.
What is Continuous Variable Crown (CVC)?
Increasing this element typically improves hardness but decreases weldability.
What is carbon?
This intentionally maintained layer in the EAF improves energy efficiency by shielding the electric arc.
What is foamy slag?
This process enables production of ultra-low carbon grades through removal of dissolved gases.
What is vacuum degassing?
This vessel serves as an intermediate reservoir between the ladle and mold.
What is the tundish?
This phenomenon occurs when work rolls bend under rolling forces and contributes to profile variation.
What is roll deflection?
This iron oxide layer forms closest to the steel surface during scale formation.
What is Wustite (FeO)?
These undesirable elements from scrap cannot easily be removed once they enter the steelmaking process.
What are residuals (copper and tin)?
This practice promotes inclusion flotation through controlled steel movement in the ladle.
What is argon stirring?
This catastrophic event occurs when the solidified shell cannot contain the liquid steel core.
What is a breakout?
This cooling system on the runout table largely determines final coiling temperatures
What is laminar cooling?
This property is often sacrificed when strength is increased significantly.
What is ductility?
This refining byproduct captures impurities and protects the molten steel bath during EAF operations.
What is slag?
This defect can occur when molten steel is exposed to atmospheric oxygen after refining.
What is reoxidation?
This protective device prevents atmospheric contamination as steel moves between vessels
What is a shroud?
This phenomenon creates a vapor barrier when water contacts a surface significantly above its boiling point
What is the Leidenfrost Effect?
These four competing requirements must often be balanced when designing steel grades.
What are strength, formability, weldability, and cost?
Failure to properly control this dissolved element can contribute significantly to non-metallic inclusion formation.
What is oxygen?
This metallurgical objective requires the tight chemistry tolerances provided by secondary metallurgy.
What is the production of advanced high-strength steel (AHSS)?
This condition can occur when the caster consumes steel faster than upstream operations can provide it.
What is tundish starvation?
This metallurgical process occurs during hot rolling and promotes grain refinement above the recrystallization temperature.
What is dynamic recrystallization?
This broad category of products requires exceptionally tight control of chemistry, temperature, and processing conditions throughout steelmaking.
What are Advanced High-Strength Steels (AHSS)?