| 摘要 |
A monocrystalline aerodynamic blade constituted by two platforms (13,14) enframing an aerofoil (12) is manufactured by disposing the shells of the mould in such a manner that the platforms (13,14) are parallel to the plane of a baffle (18,19,20,21) for grain selection which discharges into a junction (22) leading the grain to the two platforms, and in supplying the mould through a filler (23,24) at the upper ends (13 a ,14 a ) of the platforms. The platforms (13,14) are parallel to the direction [001] of the selected monocrystal, and the generating lines of the aerofoil (12) are parallel to one of the horizontal directions [101] and [100]. |
