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US 4,951,734 AGranted
Process for the production of a steel strip
AssigneeThyssen Stahl AG
InventorsErich Hoffken, Hermann Lax, Gunter Pietzko
Life of this patent
Estimating the term…
Abstract
A steel strand having a thickness of 40 to 50 mm in cast in an oscillating mold for continuous casting at a speed of 2 to 20 m/min. The not yet completely solidified steel strand emerging from the mold is squeezed to such an extent that the inner walls of the already solidified strand shell are welded to one another. After the steel strand reduced in thickness in this way has been cooled to 1000.degree. to 1200.degree. C., the strip is rolled out in at least one pass with a 5 to 85% degree of deformation.
Claims10
A process for the production of a steel strip comprising
- casting a steel strand having a thickness of 40 to 50 mm at a casting speed of 5 to 20 m/minute in an oscillating mold for continuous casting, said mold having cooled walls,
- squeezing the not yet completely solidified cast steel strand having a solidified strand shell with inner walls after emergence from the mold to weld the inner walls of the solidified strand shell to one another, and
- subsequently rolling out the squeezed strand with a 5 to 85% degree of deformation at a temperature in the range of 1000.degree. to 1200.degree. C. using casting heat to form a strip of a final thickness of 2 to 25 mm, thereby subjecting the steel strand to a change in cross-section by stretching it.
Dependencies are inferred from the claim text.