C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 30/00 (2006.01) B23P 6/00 (2006.01) C23C 10/30 (2006.01) C23C 24/04 (2006.01)
Patent
CA 2700291
The invention relates to a method for repairing a component such as a turbine blade. At the end of its operating time, said component has, for example, a depletion of aluminium in a region (12) near the surface, the invention providing the application of a repair layer (19) containing particles (18) with an increased proportion of aluminium. A subsequent heat treatment can achieve the effect of equalizing the concentration of aluminium between the repair layer (19) and the region (12) near the surface, and so the aluminium content required for new components is achieved again. The component consequently has advantageous properties that are almost equivalent to those of a new component.
L'invention concerne un procédé de réparation d'une pièce telle qu'une aube de turbine. Cette pièce présente par exemple, à la fin de sa durée de service, un appauvrissement en aluminium dans une zone (12) proche de la surface. Selon l'invention, on appose une couche de réparation (19) qui contient des particules (18) ayant une teneur accrue en aluminium. Un traitement thermique consécutif permet d'obtenir une égalisation de la concentration d'aluminium entre la couche de réparation (19) et la zone (12) proche de la surface, de sorte qu'on retrouve la teneur en aluminium requise pour des pièces neuves. La pièce présente ainsi avantageusement des propriétés qui égalent quasiment celles d'une pièce neuve.
Jensen Jens Dahl
Klingemann Jens
Koertvelyessy Daniel
Krueger Ursus
Luethen Volkmar
Aktiengesellschaft Siemens
Smart & Biggar
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