Turbine rotor

Details Turbine rotor Turbine rotor

1986-03-14

1988-10-18

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

416213R, 228124, 228231, 148144, F04D 2902, F16C 300

Patent

active

047783451

ABSTRACT:
In a turbine rotor composed of a ceramic turbine blade and a metal shaft with an end to be machined, martensite stainless steel or martensite heat-resistant steel which can be hardened in a gas or vacuum after having been heated beyond the quenching temperature thereof is used as the metal. The ceramic blade and the metal shaft are heat-connected by brazing or shrinkage fit at 800.degree. C., or more. The metal shaft hardened through the heat-connection is tempered only at the end to be machined or the metal shaft heated to the quenching temperature is quench hardened only in part other than the end to be machined, thus facilitating the machining of the metal shaft locally which keeping the remaining part thereof in a quench hardened condition.

REFERENCES:
patent: 3834833 (1974-09-01), Faber et al.
patent: 3839779 (1974-10-01), Walker
patent: 4090813 (1978-05-01), Minato et al.
patent: 4142923 (1979-03-01), Satava
patent: 4335998 (1982-06-01), Siebels
patent: 4557704 (1985-12-01), Ito et al.
patent: 4614453 (1986-09-01), Tsuno et al.

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