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