| 摘要 |
A method for manufacturing a turbine-engine blade from a preform made from polymerized composite material in a mold comprising a bottom part and a top part, comprising at least one closure step during which the top part of said mold is attached to the bottom part of the mold containing the preform, wherein it comprises, prior to said closure step, at least one insertion substep during which a first end of an immobilization element is inserted in a bottom part of the preform in a substantially transverse direction, and a positioning substep during which a second, opposite end of said element is disposed in a complementary reception cavity emerging in the bottom part of the mold. |
| 主权项 |
1. Method for manufacturing a turbine-engine blade made from composite material, the method comprising:
producing a preform of general axial orientation, by weaving threads in three dimensions, said preform comprising a blade root part and a blade vane part; placing the preform in a bottom part of a mold, a recess of which is substantially complementary to bottom parts of the blade root part and of the blade vane part of the preform; closing the mold, consisting of attaching a top part of said mold, a recess of which is complementary to top parts of the blade root part and of the blade vane part of the preform, on the bottom part of the mold containing the preform; compacting the preform in said mold: and injecting a resin into the mold under vacuum in order to impregnate the compacted preform and to form a rigid blade after polymerization of the resin, wherein, prior to closing the mold, the method further comprises
inserting a first end of an immobilization element in a bottom part of the preform in a substantially transverse direction; andpositioning a second, opposite end of said element in a complementary reception cavity emerging in the bottom part of the mold. |
