| 摘要 |
The process for recovering a turbomachine component such as blade (10) or wiper constituted by a substrate forming the body of the component and a protective coating adhering to the substrate, comprises checking the turbomachine component to identify a joining defect between the protective coating and the substrate, suppressing the joining defects by passing a laser beam (14) on each area having the defects, and performing a localized fusion of the protective coating and the underlying substrate to allow a defect free joining after cooling the area. The process for recovering a turbomachine component such as blade (10) or wiper constituted by a substrate forming the body of the component and a protective coating adhering to the substrate, comprises checking the turbomachine component to identify a joining defect between the protective coating and the substrate, suppressing the joining defects by passing a laser beam (14) on each area having the defects, and performing a localized fusion of the protective coating and the underlying substrate to allow a defect free joining after cooling the area. The zones areas having the defects are analyzed geometrically in three dimensions and then recorded so as to provide a determined direction and characteristics to the laser beam. The localized fusion caused by the laser beam is carried out under inert or reducing atmosphere. The laser beam is directed on the defect zone using an optical fiber (12), and is emitted from yttrium aluminum garnet (YAG) laser (11). After suppressing the joining defects, the turbomachine component is rechecked for verifying the joining defects between the protective coating and the substrate. |
