Process for manufacturing a hollow turbomachine blade and progre

Details Process for manufacturing a hollow turbomachine blade and progre Process for manufacturing a hollow turbomachine blade and progre

1997-08-19

1999-08-10

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

298897, B23P 1500

Patent

active

059339527

ABSTRACT:
A process for manufacturing a hollow turbomachine blade made from a titanium alloy of the TA6V type includes a hot twisting step in which an element of the blade is twisted progressively at a temperature above 700.degree. C. by a plurality of bars which are rotated about the twist axis and act on collars previously fixed to the element, the distribution and number of collars being determined according to the desired twist to be imparted and such as to obtain a linear twist development between each collar. Hot twisting apparatus for use in carrying out the operation is also described.

REFERENCES:
patent: 5063662 (1991-11-01), Porter et al.
patent: 5083371 (1992-01-01), Leibfried et al.
patent: 5099573 (1992-03-01), Krauss et al.
patent: 5636440 (1997-06-01), Bichon et al.

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