Method and apparatus for hot top casting of reactive metals

Details Method and apparatus for hot top casting of reactive metals Method and apparatus for hot top casting of reactive metals

B - Operations, Transporting

22

D

B22D 27/04 (2006.01) B22D 11/04 (2006.01) B22D 11/11 (2006.01) B22D 21/00 (2006.01)

Patent

CA 2047384

Method and apparatus for use in hot top continuous casting of reactive metals, especially magnesium and magnesium containing alloys. To prevent oxidation a protective gas is supplied to the porous refractory hot top material (1) and eventual joints. It is arranged a closed chamber (7) between hot top (1) and a jacket (8) for supply of gas. It is preferred to use sulphur hexafluoride eventually in mixture with other gases.

éthode et appareil pour utilisation dans la coulée continue avec masselotte de métaux réactifs, en particulier de magnésium et d'alliages contenant du magnésium. Dans le but de prévenir l'oxydation, on alimente en gaz protecteur le matériau réfractaire poreux de la masselotte (1) et les joints éventuels. Une chambre close (7) est aménagée entre la masselotte (1) et une enveloppe (8) pour l'alimentation en gaz. On utilise de préférence de l'hexafluorure de soufre, éventuellement en mélange avec d'autres gaz.

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