CASE STUDY STEEL MILL: Medium Slab Submerged Entry Shroud
THE CHALLENGE
The installation of a new medium section continuous casting slab mould with a thinner configuration (125mm compared to the previous 150mm) at Czech company Mittal Steel Ostrava demanded a unique Submerged Entry Shroud (SES).
Complex geometry included a 62mm diameter bore tapering to a non-symmetrical bore of 116 x 28mm and the design was required to optimise steel flow within a dual ported SES and be integrated within an existing quick change installation.
Imminent commissioning meant that a very rapid response was required, and Foseco and other suppliers of carbon bonded ceramics were invited to tender.
THE FOSECO SOLUTION
The Foseco Steel team developed new manufacturing techniques and used Foseco Steel’s thin slab ‘collapsible tooling’ technology and high performance DELTEK alumina and zirconia carbon bonded ceramic recipes to deliver an SES that fully matched casting requirements.
CASE STUDY STEEL MILL: Increased productivity in a Six
Strand Bloom Caster with TURBOSTOP
THE CHALLENGE
The customer was experiencing significant strand losses at start up through problems such as freeze-off, breakouts and alumina blockage.
Satisfactory opening of all strands is the key to a successful cast, and reduced strand availability was resulting in lost productivity, with attendant safety issues for personnel, and potentially lower steel quality.
THE FOSECO SOLUTION
A six strand bloom caster was successfully water modelled and a customised Turbostop flow control system introduced into the tundish, resulting in significant improvements in strand availability at start up and valuable operational gains.
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