Vacuum chamber, notably for steel decarburisation

Details Vacuum chamber, notably for steel decarburisation Vacuum chamber, notably for steel decarburisation

C - Chemistry, Metallurgy

21

C

C21C 7/10 (2006.01) C21C 7/068 (2006.01)

Patent

CA 2442006

The invention relates to a vacuum chamber (1) notably for steel decarburisation comprising: an upper part (2), or the top of the tank , which is in the form of a vacuum bell; and a lower part (3), or the bottom of the tank , comprising two jambs (4, 5) which are fitted with two plungers (7, 8), namely a rising plunger (7) and a falling plunger (8), which are intended to be submerged in the steel in the cavity containing the steel to be treated. Said plungers (7, 8) are connected to the jambs (4, 5) of the tank by means of flanges (10) and a joint (11) supporting a sealing device. The flanges (10) are used to mount and disassemble the plungers. The inventive chamber is characterised in that the joint (11) comprises at least two parallel planes (12, 13) and forms at least one collar (14) thereby providing a mortar and tenon-type joint.

Enceinte (1) de traitement sous vide notamment de décarburation d'acier comprenant: - une partie supérieure (2) appelée haut de cuve ayant la forme d'une cloche à vide, - une partie inférieure (3) appelée bas de cuve, comportant deux jambages (4) (5) munis de deux plongeurs (7) (8), un plongeur (7) dit montant et un plongeur (8) dit descendant destinés à être immergés dans l'acier de la poche contenant l'acier à traiter, les plongeurs (7) (8) étant associés aux jambages (4) (5) de la cuve au moyen de brides (10) par une jointure (11) portant un joint d'étanchéité, les brides (10) permettant le montage et le démontage des plongeurs, caractérisée en ce que la jointure (11) comporte au moins deux plans paralléles (12) (13) et forme au moins un épaulement (14), assurant un embâtiment du type tenon-mortaire entre le jambage et le plongeur.

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