Forming and/or inspecting cooling aperture(s) in a turbine engine component
A manufacturing method is provided. During this method, a preform component for a turbine engine is provided that includes a substrate. A meter section of a cooling aperture is formed in the substrate. An external coating is applied over the substrate. At least a portion of the substrate and the external coating is scanned with an imaging system to provide scan data indicative of an internal structure of the portion of the substrate and the external coating. A diffuser section of the cooling aperture is formed in the external coating and the substrate based on the scan data.
1. A manufacturing method, comprising:
providing a preform component for a turbine engine, the preform component comprising a substrate;
forming a meter section of a cooling aperture in the substrate;
applying an external coating over the substrate;
scanning at least a portion of the substrate and the external coating with an imaging system to provide scan data indicative of an internal structure of the portion of the substrate and the external coating; and
forming a diffuser section of the cooling aperture in the external coating and the substrate based on the scan data.
2. The manufacturing method of claim 1 , wherein the imaging system comprises a microwave imaging system.
3. The manufacturing method of claim 1 , further comprising applying an internal coating onto a surface of the meter section prior to applying the external coating onto the substrate.
4. The manufacturing method of claim 3 , wherein the internal coating comprises an aluminide coating.
5. The manufacturing method of claim 3 , wherein the internal coating comprises PtAl.
6. The manufacturing method of claim 3 , wherein the internal coating comprises NiCoCrAlY.
7. The manufacturing method of claim 1 , wherein
the substrate comprises metal; and
the external coating comprises ceramic.
8. The manufacturing method of claim 1 , further comprising:
applying a bond coating onto the substrate;
wherein the external coating is applied onto the bond coating; and
wherein the diffuser section is further formed through the bond coating.
9. The manufacturing method of claim 1 , wherein
the meter section is formed in the substrate using an electric discharge machining process; and
the diffuser section is formed in the external coating and the substrate using a laser machining process.
10. The manufacturing method of claim 1 , wherein the preform component comprises a preform of an airfoil for the turbine engine.
11. The manufacturing method of claim 1 , wherein the preform component comprises a preform of a flowpath wall for the turbine engine.
12. A method involving an imaging system, comprising:
providing a component for a turbine engine, the component including a substrate and a meter section of a cooling aperture formed in the substrate;
scanning at least a portion of the component using the imaging system to provide scan data indicative of an internal structure of the portion of the component, wherein the portion of the component includes the meter section; and
performing an operation based on the scan data;
wherein the component further includes an external coating over the substrate; and
wherein the operation comprises forming a diffuser section of the cooling aperture in the external coating and the substrate based on the scan data.
13. The method of claim 12 , wherein the imaging system comprises a microwave imaging system.
14. The method of claim 12 , further comprising applying an internal coating onto a surface of the meter section prior to applying the external coating over the substrate.
15. The method of claim 14 , wherein the internal coating comprises an aluminide coating.
16. The method of claim 14 , wherein the internal coating comprises PtAl.
17. The method of claim 14 , wherein the internal coating comprises NiCoCrAlY.
18. The method of claim 12 , wherein
the substrate comprises metal; and
the external coating comprises ceramic.
19. The method of claim 12 , further comprising:
applying a bond coating onto the substrate;
wherein the external coating is applied onto the bond coating; and
wherein the diffuser section is further formed through the bond coating.
20. The method of claim 12 , wherein
the meter section is formed in the substrate using an electric discharge machining process; and
the diffuser section is formed in the external coating and the substrate using a laser machining process.