| 摘要 |
PROBLEM TO BE SOLVED: To repair a turbine blade to a satisfactory condition with high yield by using nickel super alloy structure and provide a repair method selected for enabling economical welding repair. SOLUTION: A repaired gas turbine blade includes a single crystal airfoil 22 manufactured from a first nickel super alloy and a repair squealer chip 46 welded on a tip part of the airfoil 22. The repair squealer chip 46 is manufactured from second nickel super alloy different from the first nickel alloy super alloy and containing carbon, boron, silicon, zirconium and hafnium of total quantity less than 0.15 wt%. The repair method includes a process removing damaged material from the tip part of the airfoil and welding the tip part with repair squealer chip 46. COPYRIGHT: (C)2006,JPO&NCIPI |
