Repair or remanufacture of cooled components with an oxidation resistant braze

Patent metadata

Field	Value
Publication number	US-2016354953-A1
Application number	US-201514729426-A
Country	US
Kind code	A1
Filing date	Jun 3, 2015
Priority date	Jun 3, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A method of remanufacturing a component including at least partially filling an internal passage architecture of a component with a salt-based protective fill; filling at least one of a multiple of cooling holes of the internal passage architecture subsequent to the at least partially filling the internal passage architecture of the component with the salt-based protective fill; and removing the salt-based protective fill subsequent to filling at least one of the multiple of cooling holes.

First claim

What is claimed is:

1 . A method, comprising:
at least partially filling an internal passage architecture of a component with a salt-based protective fill.

2 . The method as recited in claim 1 , further comprising removing at least a portion of a coating prior to the at least partially filling the internal passage architecture of the component with the salt-based protective fill.

3 . The method as recited in claim 1 , further comprising removing at least a portion of a top coat prior to at least partially filling the internal passage architecture of the component with the salt-based protective fill.

4 . The method as recited in claim 3 , further comprising removing at least a portion of a bond coat subsequent to the at least partially filling the internal passage architecture of the component with the salt-based protective fill.

5 . The method as recited in claim 4 , wherein removing at least a portion of the bond coat is performed with an acid.

6 . The method as recited in claim 4 , wherein removing at least a portion of the bond coat is performed with a hydrofloric acid.

7 . The method as recited in claim 1 , further comprising filling at least one of a multiple of cooling holes of the internal passage architecture subsequent to the at least partially filling the internal passage architecture of the component with the salt-based protective fill.

8 . The method as recited in claim 7 , further comprising removing the salt-based protective fill from at least one of a multiple of cooling holes of the internal passage architecture subsequent to filling at least one of a multiple of cooling holes of the internal passage architecture.

9 . The method as recited in claim 8 , further comprising removing the salt-based protective fill from the at least one of a multiple of cooling holes of the internal passage architecture with a manual operation.

10 . The method as recited in claim 7 , further comprising filling the at least one of the multiple of cooling holes of the internal passage architecture with an Oxidation Resistant Braze (ORB).

11 . The method as recited in claim 7 , further comprising forming a cooling hole subsequent to the filling of the at least one of the multiple of cooling holes.

12 . A method of remanufacturing a component comprising:
at least partially filling an internal passage architecture of a component with a salt-based protective fill; filling at least one of a multiple of cooling holes of the internal passage architecture subsequent to the at least partially filling the internal passage architecture of the component with the salt-based protective fill; and removing the salt-based protective fill subsequent to filling at least one of the multiple of cooling holes.

13 . The method as recited in claim 12 , further comprising removing the salt-based protective fill from at least one of a multiple of cooling holes of the internal passage architecture subsequent to at least partially filling the internal passage architecture of the component with the salt-based protective fill.

14 . The method as recited in claim 12 , further comprising removing at least a portion of a bond coat subsequent to the at least partially filling the internal passage architecture of the component with the salt-based protective fill.

15 . The method as recited in claim 14 , wherein removing at least a portion of the bond coat is performed with a hydrofloric acid.

16 . The method as recited in claim 12 , wherein filling the at least one of a multiple of cooling holes of the internal passage architecture is performed with an Oxidation Resistant Braze (ORB).

17 . The method as recited in claim 12 , wherein removing the salt-based protective fill subsequent to filling at least one of the multiple of cooling holes is performed with water.

18 . A protective fill for remanufacturing a component having an internal passage architecture comprising:
a salt-based protective fill.

19 . The repaired component as recited in claim 18 , wherein the salt-based protective fill includes at least one of a magnesium sulfate and a tribasic potassium phosphate.

20 . The repaired component as recited in claim 18 , wherein the salt-based protective fill operates to protect features within the internal passage architecture such that the component remains capable of resisting a temperate within at least about 20 F-200 F of that from the component as newly manufactured.

Assignees

• United Technologies Corp

Inventors

• Auxier James T
• Castle Lea Kennard

Classifications

• B23P6/007 Primary

  using only additive methods, e.g. build-up welding · CPC title

• B29L2031/7504

  Turbines · CPC title

• B29C41/20 Primary

  incorporating preformed parts or layers, e.g. moulding inserts or for coating articles · CPC title

• F01D5/286

  Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion (F01D5/288 takes precedence) · CPC title

• B23K2101/001

  Turbines · CPC title