Method of making stator stages for compressors and turbines, and

Details Method of making stator stages for compressors and turbines, and Method of making stator stages for compressors and turbines, and

1988-08-10

1991-01-22

Look, Edward K.

Metal working

Method of mechanical manufacture

Impeller making

29558, 415189, 415190, B23P 108, B23P 1500

Patent

active

049859927

ABSTRACT:
A stator vane array is made by cutting vane blanks from a machined linear bar having a predetermined trapezoidal section using a wire tool electroerosion machine, the blanks being cut to an outline which conforms to the shape of the head and root portions of each vane. Each blank is then machined by electroerosion or by chemical machining to form the back and the face of the blade of the vane, and after carrying out finishing operations the vanes are butt-welded together edge to edge to form a complete annular array or a sector thereof. The method is particularly applicable to the manufacture of stator arrays for turbomachine compressors in which the stator vanes have blades with an evolutive profile.

REFERENCES:
patent: 1597488 (1926-08-01), Steenstrup
patent: 2221722 (1940-11-01), General Electric
patent: 3314137 (1967-04-01), Schellens
patent: 3594536 (1971-07-01), Holroyd
patent: 3802046 (1974-04-01), Watchtell et al.
patent: 3814893 (1974-06-01), Helms et al.
patent: 3963894 (1976-06-01), Wachtell et al.
patent: 4107504 (1978-08-01), Dinsdale
patent: 4195396 (1980-04-01), Blazek
patent: 4295785 (1981-10-01), Lardellier
patent: 4486642 (1984-12-01), Inoue
patent: 4509238 (1985-04-01), Lee et al.
patent: 4746782 (1988-05-01), Weber

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