Bottom pour tiles with self sealing joint for pouring liquid steel

US5118016A · kind A · utility

Assignee

• Martin & Pagenstecher, Inc. · DE

Inventors

• Eckehard Eisermann · Grefrath, DE
• Eugen Hagen · Cologne, DE

Key dates

• Filing date: Sep 27, 1990
• Grant date: Jun 2, 1992
• Expiry date: Sep 27, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S285/917
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A low tolerance joint connecting a pair of hollow refractory bricks, e.g., center riser bricks, runner bricks, etc., together for carrying molten metal, e.g., steel, therethrough. Each brick has a pair of ends with a central passageway extending therebetween. One end of one brick comprises a conical walled annular flange projecting therefrom and a shoulder extending about the annular flange. One end of the other brick comprises a matingly shaped circular recess and shoulder extending about the circular recess. The joint comprises the interface between the adjacent surfaces of the annular flange and recess when the flange is located therein. The interface thus formed is an elongated space, free of mortar or other sealing material, into which the molten metal flows to freeze therein and thereby form a seal precluding its egress from the passageway to the ambient surroundings.