Abstract: A process for geometrical construction of a flash land is provided for a flash land that is to be provided in a die for forging of a turbomachine vane, in accordance with determined parameters, where the vane includes a blade. The process includes choosing at least three reference planes corresponding to a root, middle and tip of the blade. At least three reference sections of the blade in reference planes corresponding to the root, middle and tip of the blade are chosen in the reference planes. A length of the flash land and a shrinkage distance for the three reference sections are determined in the reference planes. Intermediate sections of the flash land and the corresponding flash gutter of the flash land from the reference sections are constructed by interpolation in the predetermined planes.

Abstract: The invention concerns a geometrical construction process for a flash land, to be provided in a die for the forging of a turbomachine vane, in accordance with determined parameters (l, d, ?, ?, h), where the vane has a blade and the blade is defined by plane sections (Si) in predetermined planes (Pi), where the flash land and its flash gutter must be defined in the said predetermined planes so as to obtain plane sections of the blade and of the flash land.

Abstract: The present invention relates to a precision-forging parts manufacturing process including the manufacture and development of a first forging tooling equipment (20, 30), the forging of the parts with said tooling equipment, whereas the parts have a determined excessive thickness, and their finishing treatment, The method is characterised in that it also includes the realisation of a digital model of the surface of the first tooling equipment, the forging of parts, the rehabilitation of the tooling equipment or the manufacture of new tooling equipment from the digital model, after forging a determined number of parts. In particular, the parts are subjected to a finishing treatment directly after forging, said treatment including mechanic polishing. The invention applies to the forging of blades for turbo machines.