Two-material mold for the vertical hot-top continuous casting of metals

US6135197A · kind A · utility

Assignees

• Ugine Savoie · FR
• Sogepass · FR
• Sollac · FR
• Ascometal · FR
• Societe Anonyme des Forges et Acieries de Dilling · DE

Inventors

• Jean-Marc Jolivet · Mondelange, FR
• Eric Perrin · Metz, FR
• Cosimo Salaris · Montigny-lès-Metz, FR
• Jacques Spiquel · Montigny-lès-Metz, FR

Key dates

• Filing date: Jan 25, 1999
• Grant date: Oct 24, 2000
• Expiry date: Jan 25, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/0401
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The mold includes a cooled copper body 4 on top of which sits a refractory feed head 9 which itself consists of two separate components--a thermally insulating upper bush 16 and a bottom annulus 17 made of a stronger and more compact refractory which is surrounded by a crimping ring 18 narrower than the annulus, so that an edge of the annulus extends beyond each side of the ring. As the lower inner edge of the bottom annulus becomes worn due to an erosive flow of molten metal, the working life of the annulus may be extended in two ways. First, the annulus may be removed between casting operations and its bottom surface may be faced. Second, after the facing operations have rendered the bottom surface flush with the crimping ring 18, the annulus may then be inverted so that the lower inner edge is replaced with the upper inner edge.