| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode 110 for rejuvenating a cooling passage 101 within an airfoil 10, 60. SOLUTION: The electrode includes a tip 130, an end 140, a conductive core 116 extending between the tip and the end, and an insulating coating 118 disposed on the conductive core. The insulating coating exposes a number of conductive strips 150 of the conductive core extending between the tip and the end. The insulating coating forms a number of insulating portions and further exposes a number of spacer portions 133 of the conductive core longitudinally positioned between the insulating portions. The insulating portions substantially span a distance between the tip and the end and are positioned between the conductive strips. COPYRIGHT: (C)2004,JPO
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