Abstract
Insuring stable supply of wide-width quality slabs for HR/CR automotive and API applications was the main reason for revamping the Posco Gwangyang No. 1-3 machine that is, incidentally, the only large-width slab caster (up to 2,000 mm) in operation at Gwangyang Works. To meet that objective, both at the surface and internal quality points of view, several technical advances were included in the project such as: vertical-bending, multi mode electromagnetic stirring in the mould (MM EMS), hydraulic mould oscillation (DYNAFLEX), split and short-pitch strand guide rolls, soft reduction (ASTC) and dynamic secondary cooling control (DYNACS).
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