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AssigneeNippon Steel Corporation
InventorsDaisuke Nikkuni, Toshiyuki Shiraishi, Yutaka Sadano, Masafumi Miyazaki
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A slab manufacturing method in which casting drum housing screw-down system deformation characteristics which have been acquired prior to the start of slab casting and which indicate deformation characteristics of a housing configured to support a casting drum and deformation characteristics of a screw-down system configured to screw down the casting drum is used to calculate an estimated plate thickness at both end portions of a slab in a width direction thereof from Expression 1 ((estimated plate thickness on entry side of rolling mill)=(screw-down position of casting cylinder)+(elastic deformation of casting drum)+(casting drum housing screw-down system deformation)+(drum profile of casting drum)−(elastic deformation of casting drum at time of screw-down position zero-point adjustment)), an entry-side wedge ratio and an exit-side wedge ratio are calculated on the basis of the estimated plate thickness calculated from Expression 1.
A slab manufacturing method for manufacturing a slab using a twin-drum type continuous casting device configured to cast a slab by solidifying a molten metal using a pair of rotating casting drums;
A control device which adjusts a screw-down position of a rolling mill in a slab manufacturing facility which includes:
Dependencies are inferred from the claim text.