Casting-rolling system for batch and continuous operation

US12358034B2 · kind B2 · utility

Assignee

• SMS group GmbH · DE

Inventors

• Dieter Rosenthal · Niederfischbach, DE
• Christoph Klein · Darmstadt, DE

Key dates

• Filing date: May 23, 2019
• Grant date: Jul 15, 2025
• Expiry date: Aug 4, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21B2261/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing an ultra-thin strip of less than 0.8 mm from cast steel in batch/continuous operation with a casting-rolling system. The method includes casting a thin slab having a casting thickness of 90-150 mm and width of at least 1000 mm at a casting speed of 7 m/min. The thin slab is heated/homogenized to a first temperature in a continuous furnace and subsequently rolled by at least seven final roll stands into an ultra-thin band. Neither the thin slab nor strip undergo inductive heating during production. The thin slab rolling steps include rough rolling the thin slab at the heated/homogenized first temperature by a roughing stand; heating/homogenizing the rough-rolled thin slab to a second temperature by a further continuous furnace; and finally rolling the rough-rolled thin slab at the second temperature to the ultra-thin strip by the final roll stands arranged downstream of the further continuous furnace.