| 摘要 |
PURPOSE:To improve the durablity by applying the surface hardening treatment on a contact surface of a connecting member being contacted with the other member, in a device in which adjacent turbine moving blades are mutually con- nected via a pair of connecting member which cooperate with canopy top members provided on each moving blade. CONSTITUTION:The canopy top members 6a, 7a are provided on the surfaces of each opposite sides of the turbine moving blades 1, 2, and the moving blade connecting members 8, 9 are provided between the top ends of the each moving blades 1, 2. The pins 10, 11 which are formed on the upper surface of each connecting member 8, 9 are fitted into and fastened to the through holes 12, 13 of the each canopy top members 6a, 7b. Said connecting members 8, 9 ristrict untwining by contacting, at contacting surfaces 14-17, with the blade surfaces of said moving blades 1, 2. At this time, such surface hardening treatments 21- 28 as welding ejection or padding with hard alloy, shot-peening, etc. are performed on the contacting surfaces 14-20 of the connecting members 8, 9. Thereby, the fretting corrosion of said surfaces 14-20 is prevented. |
