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Turbine nozzle segment, method of repairing a such nozzle segment and replacement casting for use in repairing the turbine nozzle segments
Turbine nozzle segment, method of repairing a such nozzle segment and replacement casting for use in repairing the turbine nozzle segments
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机译:涡轮喷嘴段,修复这种喷嘴段的方法以及用于修复涡轮喷嘴段的替换铸件
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摘要
A method for repairing a turbine nozzle segment (10) having at least one vane (34) disposed between outer and inner bands (14,16) includes separating the inner band (16) from the nozzle segment (10), and joining the inner band (16) to a newly manufactured replacement casting (30) having an outer band (32) and at least one vane (34). The replacement casting (30) includes a mounting platform (44) formed on one end of the vane (34) and a boss (46) formed on the mounting platform (44). A collar (38) is joined to the inner band (16) and has a slot (42) formed therein. The boss (46) is then inserted into the slot (42), and the mounting platform (44) is received in a recess (40) formed in the inner band (16). Joining is completed by joining the boss (46) to the collar (38) and the mounting platform (44) to the inner band (16). IMAGE
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