F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
230/132, 26/148
F04D 29/28 (2006.01) C04B 35/622 (2006.01) C04B 35/634 (2006.01) F01D 5/28 (2006.01) F01D 5/34 (2006.01) F02B 1/04 (2006.01)
Patent
CA 1239381
Abstract of the Disclosure A radial type ceramic turbine rotor consists of a shaft portion, a hub integrally connected to the shaft portion, and a blade portion integrally formed with said hub, and an end surface of the hub on a gas exit side being extending from an end surface of the blade portion in the proximity of the hub. According to the invention a fillet formed at a circular connection between the blade portion and the hub on the gas exit side of the rotor is formed a concave surface whose radius of curvature is more than 3 mm. According to the method of the invention, the radial type ceramic turbine rotor is produced by the steps of injection molding a ceramic material in a manner the above radius of curvature is more than 3 mm after sintering, removing a plasticizer included in the turbine rotor and sintering it under a normal pressure, thereby completely precluding cracks in the fillet.
448110
Ngk Insulators Ltd.
Smart & Biggar
LandOfFree
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