Method for fastening blades on the periphery of the rotor body o

Details Method for fastening blades on the periphery of the rotor body o Method for fastening blades on the periphery of the rotor body o

1986-06-11

1987-12-01

Goldberg, Howard N.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

291568R, 29458, 295276, 29DIG26, 29DIG48, 228208, 22826315, 416213R, 416215, 416241R, 416244A, F01D 530, B23P 1502, B21K 2300

Patent

active

047101032

ABSTRACT:
Steam turbine blades are fastened in an outer layer of weld material applied by deposit welding to the outer surface of the rotor body, the composition of the weld material being optimally matched with respect to hot strength and/or corrosion resistance, in particular stress corrosion resistance, to the local mechanical, thermal and chemical requirements. A possible option is additionally to insert a deposit welded intermediate layer of medium alloying element content. Steels with 10-14% Cr, low carbon and additions of Mo and possibly V are preferred as the weld material for the layer.

REFERENCES:
patent: 3975612 (1976-08-01), Nakazaki et al.
patent: 4214906 (1980-07-01), Langer et al.
patent: 4288677 (1981-09-01), Sakata et al.
patent: 4426426 (1984-01-01), Muhlberger

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