Device and method for the surface peening of a component of...

B - Operations – Transporting – 24 – C

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B24C 1/10 (2006.01) F01D 5/34 (2006.01)

Patent

CA 2671733

The invention relates to a device for the surface peening, especially ultrasonic surface peening of a component (blisk 10) of a gas turbine. Said device comprises at least one vibration device (46, 48; 86, 88, 90) having a surface (42, 44; 80, 82, 84) that impinges the blasting material, and a holding device (34) which allows a surface area of the component (10) to be positioned relative to the surface of the vibration device (46, 48; 86, 88, 90). The surface of the vibration device (46, 48; 86, 88, 90) is subdivided into at least two adjacent partial surfaces (42, 44; 80, 82, 84) which comprise respective overlapping parts (58, 60; 100, 102, 104) by means of which a part (64; 108, 110) of the surface area of the component (10) can be treated by the blasting material that is impinged upon by the one or the other partial surface (42, 44; 80, 82, 84). The invention also relates to a method whereby the part (64; 108, 110) of the surface area of the component (10) is treated successively by blasting material that is impinged upon by the respective overlapping parts (58, 60; 100, 102, 104) of the at least two partial surfaces (42, 44; 80, 82, 84).

L'invention concerne un dispositif pour le grenaillage, notamment pour le grenaillage par ultrasons, de la surface d'une pièce (disque aubagé monobloc 10) d'une turbine à gaz. Le dispositif selon l'invention comprend au moins un dispositif vibratoire (46, 48; 86, 88, 90) présentant une surface (42, 44; 80, 82, 84) sollicitant la grenaille, ainsi qu'un dispositif de maintien (34) servant à positionner une zone de surface de la pièce (10) par rapport à la surface du dispositif vibratoire (46, 48; 86, 88, 90). Le dispositif selon l'invention est caractérisé en ce que la surface du dispositif vibratoire (46, 48; 86, 88, 90) est subdivisée en au moins deux surfaces partielles voisines (42, 44; 80, 82, 84) présentant respectivement une partie de chevauchement (58, 60; 100, 102, 104). Grâce à ces parties de chevauchement, une partie (64; 108, 110) de la zone de surface de la pièce (10) peut être traitée aussi bien par de la grenaille sollicitée par une surface partielle (42, 44; 80, 82, 84) que par de la grenaille sollicitée par l'autre surface partielle (42, 44; 80, 82, 84). L'invention concerne également un procédé selon lequel la partie (64; 108, 110) de la zone de surface de la pièce (10) est traitée successivement au moyen de grenaille sollicitée par les parties de chevauchement respectives (58, 60; 100, 102, 104) des deux surfaces partielles (42, 44; 80, 82, 84).

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