Pipe junction and device for producing the same

F - Mech Eng,Light,Heat,Weapons – 01 – N

Patent

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Details

F01N 13/10 (2010.01) B21C 37/29 (2006.01) F16L 41/02 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2189968

In a weld-free pipe junction having at least two inlets (E) and one outlet (A), the outlet (A) is formed by a neck (4) shaped in the side wall of a pipe (1,1') whose ends (2,3) form both inlets (E). A device for producing such a pipe junction from a pipe (1,1') by high pressure inner forming has the following characteristics: a forging die is engraved with a first recess (6) for receiving a pipe (1,1') and with a second recess (11) that opens into the first recess; two axial male dies (7) are provided in the first recess (6), and at least one of the male dies (7) has a duct (8) for supplying a pressurised medium (9) to the inside of the pipe (1,1') laid into the first recess; an opposite male die (12) is guided in the second recess (11).

Dans une jonction de tuyaux sans soudures avec au moins deux admissions (E) et une sortie (A), la sortie (A) est constituée d'une gorge (4) façonnée dans la paroi latérale d'un tuyau (1, 1') dont les deux extrémités (2, 3) forment les deux admissions (E). Un dispositif de fabrication d'une telle jonction de tuyaux par formage intérieur sous haute pression d'un tuyau (1, 1') a les caractéristiques suivantes: une matrice comprend une gravure avec un premier évidement (6) de réception d'un tuyau (1, 1') et un deuxième évidement (11) qui débouche dans le premier évidement; deux poinçons axiaux (7) se situent dans le premier évidement (6) et au moins un des poinçons comprend un conduit (8) d'amenée d'un milieu sous pression (9) à l'intérieur du tuyau (1, 1') posé dans le premier évidement; un poinçon (12) orienté en sens inverse est guidé dans le deuxième évidement (11).

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