Continuous steel casting method

US3935895A · kind A · utility

Assignee

• Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft · AT

Inventors

• Thorwald Fastner · Linz, AT
• Alois Niedermayr · Linz, AT
• Ernst Bachner · Munich, DE
• Herbert Bumberger · Linz, AT

Key dates

• Filing date: Jun 3, 1974
• Grant date: Feb 3, 1976
• Expiry date: Jun 3, 1994

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/117
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a continuous steel casting method for a casting capacity of more than 1.5 metric tons of steel per minute. In this method a vertically arranged, substantially rectangular mold is used, into which at least one steel stream containing inert gas is passed through a casting tube below the surface of the casting level in the mold. The casting tube is provided with lateral downwardly inclined outlet openings, whose axes lie in a vertical plane running through the larger transverse axis of the mold. The axes of the lateral outlet openings run at an angle which depends upon the perpendicular distance of the axes from the narrow side of the mold. The inert gas is supplied in an amount of 1 to 15 Ncm.sup.3 /kg steel, preferably 3 to 8 Ncm.sup.3 /kg steel, to the steel stream over its entire cross section at the place of origin above the mold. The invention is of particular advantage for slabs wider than 800 mm of aluminum-containing steel.