公开(公告)号：US12104500B2

公开(公告)日：2024-10-01

申请号：US17612060

申请日：2020-04-20

申请人： Mitsubishi Power, Ltd.

发明人： Katsumi Namba ,  Masahiro Yamada ,  Masaharu Ishida ,  Ryosuke Kimura ,  Rin Okayasu ,  Yosuke Kawachi ,  Yasuki Date

IPC分类号： B23P6/00 ,  B05D3/10 ,  B23P6/04 ,  C25F3/02 ,  F01D5/00 ,  F01D5/14 ,  F01D9/02

CPC分类号： F01D5/005 ,  B05D3/102 ,  B23P6/002 ,  B23P6/045 ,  C25F3/02 ,  F01D5/147 ,  F01D9/02 ,  F05D2220/32 ,  F05D2230/80 ,  F05D2240/12 ,  F05D2240/30

摘要： A repair method for a gas turbine blade. The repair method include: a step of removing a thermal barrier coating to expose at least part of a base material of the gas turbine blade; a first etching step of etching the exposed base material; and a first identification step of identifying a base material deterioration layer that is harder than the base material from the etched base material. The repair method further includes a first removal step of removing the identified base material deterioration layer if the base material deterioration layer is identified in the first identification step; and a step of applying a thermal barrier coating to the exposed base material. The thermal barrier applying step is performed after it is determined that there is no base material deterioration layer in the first identification step, or after the base material deterioration layer is removed in the first removal step.