| 摘要 |
A method of producing a radial type ceramic turbine rotor having a shaft, a hub connected thereto, a blade portion radially extending from the hub whose end on an air exit side extends from an end of the blade portion on the air exit side, comprises steps of injection molding a ceramic material into a ceramic rotor body and machining extra thicker portions of the molded rotor to a predetermined shaped turbine rotor. According to the invention, the molded rotor is formed by the injection molding so as to be at least 0.5 mm thicker than a predetermined thickness at a fillet between the hub and the blade portion on the air exit side and the molded rotor is then machined by a diamond wheel to remove the extra thicker portions until the thicker fillet becomes to the predetermined thickness to from a predetermined shaped turbine rotor which is free from cracks to have a high strength. |
