Deflecting roller for a strip material

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 2/00 (2006.01) F16C 13/00 (2006.01)

Patent

CA 2220029

A deflecting roller for a strip material moving through a processing liquid (10) and passing around at least one immersed deflecting roller (2) rotatably mounted on two journals (4, 4') each combined with a bearing (3, 3'). Each bearing (3, 3') is entirely made up of ceramic parts and housed in a ring-shaped guide bearing (5) which the processing liquid can enter, said guide bearing (5) being connected to means (8, 63) for supporting the bearing (4) and compensating for the differing expansion coefficients of the bearing parts relative to the journal (4) and the guide bearing (5) so that, at the operating temperature, the bearing (3) is clamped without causing the ceramic parts to break.

L'invention a pour objet un rouleau déflecteur pour un produit en bande défilant dans un liquide de traitement (10), en passant sur au moins un rouleau déflecteur (2) immergé, monté rotatif sur deux tourillons (4, 4') associés chacun à un palier (3, 3'). Conformément à l'invention, chacun des deux paliers (3, 3') est entièrement constitué d'éléments réalisés en une matière céramique et est logé à l'intérieur d'un boitard annulaire (5) dans lequel peut pénétrer le liquide de traitement, ledit boitard (5) étant associé à des moyens (8, 63) de maintien du palier (4) susceptibles de compenser les dilatations différentielles des éléments du palier par rapport au tourillon (4) et au boitard (5) pour réaliser, à la température de fonctionnement, un serrage du palier (3), sans risque de rupture des éléments en céramique.

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