Method and device for in-line surface treatment of slabs

US8572826B2 · kind B2 · utility

Assignee

• SMS SIEMAG AG · DE

Inventors

• Christian Bilgen · Mülheim an der Ruhr, DE
• Tilmann Böcher · Mülheim an der Ruhr, DE
• Luc Neumann · Goldkronach, DE
• Marcel Gathmann · Mülheim an der Ruhr, DE
• Christian Klinkenberg · Herdecke, DE

Key dates

• Filing date: Jan 10, 2011
• Grant date: Nov 5, 2013
• Expiry date: Jan 10, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4544
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method and a device for improving the outer surface quality by an in-line outer surface treatment of slabs, which are produced in a continuous process from strand casting to hot rolling, with a heating furnace arranged between a CSP-casting machine and a hot rolling train. A defined surface of the slab with a layer thickness per slab side of up to 4 mm is oxidized in a targeted manner by an oxidation device. An oxidation treatment of the slab surface is combined with the following processing in-line method steps: prior to the oxidation treatment the outer surface of the slab is freed of naturally occurring scale by a scale washer, after the oxidation treatment a created oxidation layer as well as the newly formed scale is cooled, mechanically broken up in a roll pair and removed from the surface of the slab by a scale washer.