Process and device for cooling molten steel

US5836377A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Wolfgang Reichelt · Moers, DE
• Ulrich Urlau · Moers, DE
• Paul Freier · Clausthal-Zellerfeld, DE
• Karl-Heinz Spitzer · Clausthal-Zellerfeld, DE

Key dates

• Filing date: Oct 3, 1996
• Grant date: Nov 17, 1998
• Expiry date: Oct 3, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/124
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for cooling molten steel, in particular by continuous casting of hoop-steel. At least part of the molten mass that leaves a metallurgical vessel through a metal nozzle solidifies when contacting a cooling surface. A gaseous stream that forms a reducing atmosphere is directed onto the surface of the freely accessible liquid hoop-steel immediately after it leaves the metal nozzle and the surface of the hoop-steel is exposed to this gaseous atmosphere at least until it is completely solidified.