| 摘要 |
<p>A method of manufacturing a reinforcing edge (1) for attachment to a turbo machine aerofoil, wherein the reinforcing edge (1) comprises a relatively thick nose portion (3) contoured for fitting along the edge of the turbo machine aerofoil, and a pair of opposing, relatively thin, tail portions (5,7) for overlapping the suction surface and pressure surface respectively of the aerofoil, the method comprising: pressure forming a predefined hollow workpiece (21) under fluid pressure from a respective pre-form (10), the hollow workpiece (21) incorporating the reinforcing edge (1); and cutting out said reinforcing edge (1) from the hollow workpiece (21), wherein the pre-form (10) is created by bonding a pair of relatively thin metal sheets (11,13) to opposite faces of a relatively thick inner plate (15) or bonded stack of inner plates, the inner plate (15) or stack of inner plates having an opening (17) which defines a closed cavity (19) between the metal sheets (11,13) for introducing said fluid pressure, each tail portion (5,7) of the reinforcing edge (1) being constituted by part of a respective one of the relatively thin metal sheets (11,13), and the nose portion (3) of the reinforcing edge (1) being constituted by a part of the inner plate (15) or stack of inner plates running along one edge of the cavity (19).</p> |
