Abstract: A process for manufacturing reinforcing parts (14) for leading edges (10) and/or trailing edges (12) of fan blades (1) is described. In particular, this invention relates to the use of the SPF/DB (<<Super Plastic Forming/Diffusion Bonding >>) process for this type of non-hollow part.

Abstract: Method of manufacturing a hollow blade (1) for a turbomachine in which the blade (1) is made from a preform (14) obtained from external primary parts (28, 30). In order to reduce costs, the root part (2) of the blade is formed from spare material (34) entirely located on only one of the two external primary parts of the preform (14).

Abstract: A forging die includes on one face, a half-imprint of a part to be forged such as a turbine engine blade. The die also includes on the face, a device for forming a marking along two directions relatively to which the position of the imprint is defined, the device including two pads protruding relatively to the face and each including two notches defining the two directions. This device preferably includes two pads machined on the die at the same time as the imprint, and each including two notches in the form of a cross.

Abstract: The invention relates to a method of manufacturing a hollow blade for turbine engine comprising a foot and a rotor blade, the method comprising a production stage of two external parts (14) as well as an assembling stage via diffusion bonding of these two external parts so as to obtain a blade preform.

Abstract: A method for manufacturing a hollow blade for a turbomachine is disclosed in which the blade is manufactured using a preform derived from external primary parts. A primary part comprising a root portion is formed by upset forging a bar in which material has been forced into a large volume area. Finish forging is done in at least two complementary stamping operations using an intermediate blank in order to limit costs and to use mechanical presses even for large and thin primary parts. Dies for forging the primary part are defined so as to double up at least the forging capacity of a press.

Abstract: The press of the invention includes a first component and a second component for holding and pressing a workpiece to be processed between them, the first component being driven into translation relatively to the second component by an air cylinder. Thus, the first component is floatably mounted relatively to the second component, said components comprising means for positioning them relatively to each other at the limit of travel. Proper centering of the workpiece between the components, without stresses, may thereby be provided.

Abstract: In a method for manufacturing a hollow blade for a turbomachine, the blade is made from a preform derived from external primary parts. Each primary part comprising a root part is formed by flattening a blank cut out from a ring with a large diameter provided with a protuberance, in order to reduce costs.

Abstract: A process for manufacturing reinforcing parts (14) for leading edges (10) and/or trailing edges (12) of fan blades (1) is described. In particular, this invention relates to the use of the SPF/DB (<<Super Plastic Forming/Diffusion Bonding >>) process for this type of non-hollow part.

Abstract: The present invention relates to a forging die including on one face, a half-imprint of a part to be forged such as a turbine engine blade. The die is characterized by the fact that it includes on said face, a means forming a marking along two directions relatively to which the position of said imprint is defined, said means consisting of two pads protruding relatively to said face and each including two notches defining said two directions. This means preferably consists of two pads machined on the die at the same time as the imprint, and each including two notches in the form of a cross. The invention thus allows visual checking of the positioning of the imprints and of the dies on the platens of the press.

Abstract: Method of manufacturing a hollow blade (1) for a turbomachine in which the blade (1) is made from a preform (14) obtained from external primary parts (28, 30). In order to reduce costs, the root part (2) of the blade is formed from spare material (34) entirely located on only one of the two external primary parts of the preform (14).

Abstract: The invention relates to a method of manufacturing a hollow blade for turbine engine comprising a foot and a rotor blade, the method comprising a production stage of two external parts (14) as well as an assembling stage via diffusion bonding of these two external parts so as to obtain a blade preform. According to the invention, the production stage of the two external parts comprises, for each of these parts, the following operations: the making via forging of a primary element (28) constituting at least a rotor blade part of the external part; the making via forging of at least a secondary element (34) intended to form at least partially a foot part of the external part; and the assembling of each secondary element (34) onto the primary element so as to obtain the external part.

Abstract: The invention relates to a method of manufacturing a single-piece hollow fan blade for turbine engines comprising a foot (2) extended by a rotor blade (4) in a radial direction, the method comprising the following stages: making via forging of a single-piece fan blade (1) with a plurality of inserts; and eliminating of the inserts so as to obtain a plurality of recesses (16) in this blade. The invention also relates to such a blade (1) fitted with a plurality of recesses (16) each extending substantially and radially along a curved central line (18).