Shot-peening of cooled blade tops

B - Operations – Transporting – 24 – C

Patent

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B24C 1/10 (2006.01) B24B 1/04 (2006.01) B24B 39/00 (2006.01) B24B 41/06 (2006.01) C21D 7/06 (2006.01) F01D 5/14 (2006.01) F01D 5/28 (2006.01)

Patent

CA 2363302

L'invention concerne un procédé de grenaillage des sommets des aubes refroidies qui comportent des orifices de passage (12) d'air de refroidissement. Le grenaillage est réalisé au moyen d'un brouillard de billes (31) créé dans une enceinte étanche (29) renfermant au moins une tête d'aube (1). Le brouillard de billes est créé par la surface active (27) d'une sonotrode (28) délimitant une partie de l'enceinte (29). Les billes (31) ont un diamètre supérieur à celui des orifices de passage (12) d'air de refroidissement.

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