Method for producing steel slabs

US6935408B2 · kind B2 · utility

Assignee

• SMS DEMAG LLC · DE

Inventors

• Horst von Wyl · Duisburg, DE
• Ingo Schubert · Burgau, DE
• Jung Wolfram · Siegen, DE

Key dates

• Filing date: Jul 25, 2001
• Grant date: Aug 30, 2005
• Expiry date: Jul 25, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49991
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing steel slabs, whereby the strand leaves an ingot mold with melt enclosed by a strand shell and, in a strand guide located downstream, the opening width of guide rolls mounted in segments with upper and lower frames can be set in a continuous manner with successive steps by adjusting elements that join said guide rolls. An oscillation around a center line of the opening width serves to modify the opening width in order to render the dynamic influences on the guide rolls negligibly small. The amplitude of the opening width oscillation is set to ta quantity, which des not provoke any plastic deformation of the strand shell. The actual opening width of the guide rolls is detected and the actuating force of the adjusting elements as well as the amplitude of the actuating force are determined at the same time. In the case of an increasing amplitude of the actuating force, the opening width is set to a predeterminable measure and/or guided in a pressure controlled manner via at least one adjusting element. A force/path diagram of the opening width setting is then determined form a multitude of force/path measurements along the strand. Said diagram is composed, in a c…