Method and device for producing a straight cylindrical body...

B - Operations – Transporting – 28 – B

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B28B 21/12 (2006.01)

Patent

CA 2396890

The invention concerns the production of a straight cylindrical body by molding using a loose granular material hardenable in a mold cavity, whereby successive charges of the loose composition are fed into a mold cavity (4) and each new charge is pushed with push surfaces (11) into surface S of the molded composition to provoke interpenetration of the new charge and the molded composition with the purpose of densifying the molded composition. The invention can be applied in the manufacture of tubes, particularly using a cement composition.

L'invention concerne la fabrication d'un corps cylindrique droit par moulage à partir d'une composition granulaire lâche durcissable dans une cavité de moulage, dans lequel on alimente une cavité de moulage (4) avec des charges successives de la composition à l'état lâche et on pousse chaque nouvelle charge avec des surfaces de poussée (11) dans la surface S de la composition moulée pour provoquer une interpénétration de la nouvelle charge et de la composition moulée de façon à densifier la composition moulée. Application à la fabrication d'un tuyau, notamment à partir d'une composition cimentaire. Image

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