Process and installation for protecting a jet of molten metal for casting

US4460409A · kind A · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Serge Devalois · Saint-Germain-en-Laye, FR
• Thierry Hersant · Chatou, FR
• Albert-Gilbert Goursat · Voisins-le-Bretonneux, FR
• Francois Weisang · Antony, FR

Key dates

• Filing date: Mar 11, 1983
• Grant date: Jul 17, 1984
• Expiry date: Mar 11, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D1/005
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to the protection of a casting jet of molten metal, flowing between an upper storage tank and a lower receiving vessel. At least one inert liquefied gas is injected above and close to the surface of the molten metal contained in the lower vessel, and, at the same time, at least one inert gas is injected into the molten metal through the base or the walls of the lower vessel. The process of this invention protects metal casting jets from oxidation, for example, jets between ladle and manifold, between ladle and ingot mold, between ladle and ladle, or between converter (or furnace) and ladle.