Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received by continuous circumferential channel
Patent
1989-11-22
1991-11-05
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received by continuous circumferential channel
416220R, F01D 532
Patent
active
050627694
ABSTRACT:
Steam turbine blades and buckles are attached to a rotor with pins which fit through dove-tailed connections. In one extremity of the blade and a mating position on the rotor. The pins are composed of a first material which is in a state of compression due to shot peening, a second metallic material being on the surface of the pins. The second metallic material is not as hard as the first material and provides a relative lubricating surface to facilitate removal from a mating aperture in the dove-tail formations.
REFERENCES:
patent: 1289278 (1918-12-01), Schmidt
patent: 1345642 (1920-07-01), Schmidt
patent: 4135849 (1979-01-01), Pigott
patent: 4321012 (1982-03-01), Tan et al.
Berman Charles
Kwon John T.
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