Refractory article suitable for casting molten metal

US4634685A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Siegfried Pohl · Oberschleißheim, DE
• Ernst Luhrsen · Schlangenbad, DE
• Peter Jeschke · Eltville am Rhein, DE
• Ortwin Rave · Wiesbaden, DE
• Martin Kienow · Krefeld, DE
• Werner Richter · Krefeld, DE

Key dates

• Filing date: Oct 31, 1985
• Grant date: Jan 6, 1987
• Expiry date: Oct 31, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/101
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A refractory article for casting of liquid melts, especially steel, fabricated from a mixture of Al.sub.2 O.sub.3, graphite, a flux component, a synthetic resin binder and a metallic powder. The flux component contains a first flux with a melting point from 550.degree. to 900.degree. C. and a second flux that becomes active in the mixture in a temperature ranging from 1350.degree. and 1550.degree. C. The refractory article need not be heated before use, and the carbon contained therein, which determines the strength of the article, is retained for a much longer period during use, so that the article will have a long service life.