Method for the production of parts by means of diffusion...

Details Method for the production of parts by means of diffusion... Method for the production of parts by means of diffusion...

B - Operations, Transporting

23

K

B23K 20/02 (2006.01) B23K 20/26 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2475024

The invention relates to a method for producing parts (2) comprising at least one internal cavity (4), said method consisting of three successive steps: first, at least two metal sheets (14) are diffusion bonded; then said bonded metal sheets are bent; and third, each of the internal cavities (4) is inflated by means of superplastic forming. The inventive method is carried out by means of a mold (1) allowing at least one first part (2a) to be diffusion bonded and then bent while inflating at least one second part (2b) by means of superplastic forming during a single operation, whereby said mold is heated. The inventive method applies to the field of aeronautics.

L'invention concerne un procédé de fabrication de pièces comprenant au moins une cavité interne, ce procédé comprenant successivement une étape de soudage par diffusion d'au moins deux tôles métalliques, une étape de déformation d'un ensemble formé par lesdites tôles métalliques soudées entre elles, ainsi qu'une étape de gonflage de chacune des cavités internes par formage superplastique. Le procédé selon l'invention est réalisé en utilisant un moule permettant, lors d'une unique opération de mise en chauffe de ce moule, de réaliser successivement l'étape de soudage par diffusion et l'étape de déformation sur au moins une première pièce, ainsi que de réaliser l'étape de gonflage par formage superplastique sur au moins une seconde pièce.

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