Development of a Slab Intermix Model for Casting Dissimilar Steel Grades at SSAB Mobile
(Room 408)
16 May 16
10:00 AM
-
10:30 AM
Tracks:
Roll Shop Management, Steelmaking Metallurgy
It is a common practice in the steel industry to cast as many heats as possible in a casting sequence to maximize productivity. However, in some cases, steel grades with vastly dissimilar chemical compositions may create intermix or transition slabs that are not suitable for application to either of the grades being intermixed. This paper describes a mathematical model, developed at SSAB for its Mobile, Alabama, plant, to identify intermixable grades to maximize sequence length and optimize casting conditions to ensure that transition slabs are applicable to the grades being intermixed. The model comprises two sub-modules, viz., a tundish mixing module and a mold mixing module. The model has been verified and implemented for on-line use during casting.