| 摘要 |
PURPOSE:To prevent damage of a rotor caused by thermal stress dispensing with a through aperture for coupling of rotor by a method wherein metallic collar is shrink fitted on the jointed surface between ceramic turbine rotor and ceramic rotary axis mutually abutted with each other. CONSTITUTION:Head part 11 forming a jointed surface 11A on ceramic turbine rotor 10 is set, while the jointed surface 13A confronted therewith is formed on ceramic rotary axis 13, and a metallic collar 17 is shrink fitted on the peripheral surface near the two jointed surfaces 11A, 13A to fix rotor 10 to rotary axis 13. A column type ceramic pin 16 is inserted in the joint part 15 from its peripheral surface to the center of axis so that the rotary axis 13 may share a role of transmitting torque. |
