Tap spout for metallurgical vessels and method of repairing

US4984769A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Raimund Bruckner · Engenhahn, DE
• Axel Eschner · Wiesbaden, DE
• Wilhelm Langenfeld · Düsseldorf, DE
• Manfred Oberbach · Krefeld, DE
• Hans Rothfuss · Wiesbaden, DE
• Dieter Stusser · Duisburg, DE

Key dates

• Filing date: Dec 26, 1989
• Grant date: Jan 15, 1991
• Expiry date: Dec 26, 2009

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27D3/1518
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A tap spout, particularly for allowing molten metal to be discharged from oxygen-steel converters, includes a replaceable unit including a tubular wear lining and a jointing layer secured thereto. An inner lining of the tap spout may thus be repaired with relatively simple maintenance work by removing the inner lining and subsequently inserting the replaceable unit into an outer lining of the tap spout to form a new inner lining of the tap spout. The replaceable unit is adapted to facilitate either a press fit, and in particular, a fit ensured by axial compression of the jointing layer, or an expansion fit with the outer lining to secure the replaceable unit therein.