| 摘要 |
A blade has an aerofoil (12), a pivot (14) and a platform (20) having a disc-shaped portion (21), where the platform is immobilized in rotation with respect to an axis of the pivot. The platform is fitted on a face to a plate (13) and is supported by another face against a wall of a casing of a turbo machine. An anti-rotation tab is integrated to the disc and cooperates with a complementary surface made on the plate. The platform cooperates with a bush mounted in the casing, where the platform is made of an alloy e.g. cold nickel-based alloy and extremely hard steel. An independent claim is also included for repairing a state blade. |
