process for the production of a hollow turbinenschaufel

摘要

The method involves producing two external parts (14), each having a blade part (18) and a base part (16) and being intended to partially form a preform of a blade. A blade part of an external part is manufactured by forging a primary unit. The base part of an external part is formed by forging a secondary unit. The primary and secondary units are then assembled for obtaining the external parts.