| 摘要 |
A turbine or compressor blade with projections adjacent each end having one or more arcuate re-entrant surfaces is initially forged and is finish formed, either hot or cold, in a mould which defines the aerodynamic portion of the blade. The projections are finish formed by punches and after retraction of the punches, the mould halves are separated by a pivotal movement about an axis which contains the center of curvature of the arcuate re-entrant surfaces thus enabling the formed blade to be removed.
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