Production of turbine components with heat-extracting features using additive manufacturing

Patent metadata

Field	Value
Publication number	US-2016109130-A1
Application number	US-201514671229-A
Country	US
Kind code	A1
Filing date	Mar 27, 2015
Priority date	Oct 17, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

Turbine engine components having heat-extracting features and methods for manufacturing such components using additive manufacturing are disclosed. An exemplary method comprises providing a base portion of the engine component manufactured by a first manufacturing process and adding one or more heat-extracting features to the engine component using a second manufacturing process different from the first manufacturing process where the second manufacturing process comprises an additive manufacturing process.

First claim

What is claimed is:

1 . A method for manufacturing a component of a turbine engine, the component for exposure to a heat source when used in the turbine engine, the method comprising:
providing a base portion manufactured by a first manufacturing process, the base portion comprising a first surface and a second surface, the first surface for exposure to the heat source and the second surface for exposure to a cooling fluid when used in the turbine engine; and adding a heat-extracting feature on the second surface of the base portion using a second manufacturing process different from the first manufacturing process, the second manufacturing process comprising an additive manufacturing process, the heat-extracting feature having a longitudinal axis being non-normal to the second surface at a location of the heat-extracting feature on the second surface.

2 . The method as defined in claim 1 , wherein the longitudinal axis is at least 5° from a normal of the second surface taken at the location of the heat-extracting feature.

3 . The method as defined in claim 1 , wherein the longitudinal axis is between 10° and 15° from a normal of the second surface taken at the location of the heat-extracting feature.

4 . The method as defined in claim 1 , comprising adding a plurality of heat-extracting features on the second surface of the base portion where the plurality of heat-extracting features has a density of between 25 and 100 heat-extracting features per square inch (6.5 cm 2 ) of area of the second surface.

5 . The method as defined in claim 1 , comprising adding a plurality of heat-extracting features from the second surface of the base portion where the plurality of heat-extracting features has a density of at least 100 heat-extracting features per square inch (6.5 cm 2 ) of area of the second surface.

6 . A gas turbine engine component comprising:
a base portion comprising a first surface and an opposite second surface, the first surface for exposure to a heat source and the second surface for exposure to a cooling fluid when used in the gas turbine engine; and a heat-extracting feature on the second surface of the base portion, the heat-extracting feature having a longitudinal axis being non-normal to the second surface at a location of the heat-extracting feature on the second surface.

7 . The component as defined in claim 6 , wherein the base portion has an annular configuration having a central axis and the second surface faces radially outwardly from the central axis.

8 . The component as defined in claim 6 , wherein the longitudinal axis is between 10° and 15° from a normal of the second surface taken at the location of the heat-extracting feature.

9 . The component as defined in claim 6 , comprising a plurality of heat-extracting features on the second surface of the base portion where the plurality of heat-extracting features has a density of between 25 and 100 heat-extracting features per square inch (6.5 cm 2 ) of area of the second surface.

10 . The component as defined in claim 6 , comprising a plurality of heat-extracting features on the second surface of the base portion where the plurality of heat-extracting features has a density of at least 100 heat-extracting features per square inch (6.5 cm 2 ) of area of the second surface.

11 . The component as defined in claim 6 , wherein the second surface of the base portion is non-planar.

12 . The component as defined in claim 6 , wherein the heat-extracting feature has an outer cross-sectional dimension perpendicular to the longitudinal axis and a height normal to the second surface where the height is three or more times the outer cross-sectional dimension.

13 . The component as defined in claim 6 , wherein an overall dimension of the base portion is at least 6 inches (60 cm).

14 . The component as defined in claim 6 , wherein the base portion comprises a side wall intersecting the second surface and the heat-extracting feature leans away from the sidewall.

15 . A gas turbine engine comprising the component defined in claim 6 .

Assignees

• Pratt & Whitney Canada

Inventors

• Stastny Honza
• Richard Francois
• Cote Marjolaine

Classifications

• B23K26/342

  Build-up welding · CPC title

• F23R3/04 Primary

  Air inlet arrangements · CPC title

• F23R3/002

  Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title

• B23K26/08

  Devices involving relative movement between laser beam and workpiece · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title