Turbine component surface treatment processes and systems

Patent metadata

Field	Value
Publication number	US-9845703-B2
Application number	US-201414568424-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 12, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A turbine component surface treatment process includes passing a UV-curable maskant through one or more fluid flow passages, wherein at least a portion of the UV-curable maskant exits the one or more fluid flow passages at an exterior surface of the turbine component, applying a UV light to the exterior surface of the turbine component, wherein the UV light cures at least a portion of the UV-curable maskant exiting the one or more fluid flow passages, and, treating the exterior surface with a treatment material, wherein the portion of the UV-curable maskant cured by the UV light substantially blocks the treatment material from entering the one or more fluid flow passages.

First claim

What is claimed is:

1. A turbine component surface treatment process comprising:
passing a UV-curable maskant through one or more fluid flow passages, wherein at least a portion of the UV-curable maskant exits the one or more fluid flow passages at an exterior surface of the turbine component;
applying a UV light to the exterior surface of the turbine component concurrently when the UV-curable maskant is passed through the one or more fluid flow passages, wherein the UV light cures at least a portion of the UV-curable maskant exiting the one or more fluid flow passages; and wherein applying the UV light partially cures at least the portion of the UV-curable maskant into one or more stalactites that extend away from the exterior surface,
treating the exterior surface with a treatment material, wherein the one or more stalactites of the UV-curable maskant cured by the UV light substantially blocks the treatment material from entering the one or more fluid flow passages, and
further comprising heating the turbine component to remove the UV-curable maskant after treating the exterior surface.

2. The turbine component surface treatment process of claim 1 , further comprising removing the one or more stalactites prior to treating the exterior surface.

3. The turbine component surface treatment process of claim 1 , wherein the UV-curable maskant exits a plurality of fluid flow passages at the exterior surface of the turbine component.

4. The turbine component surface treatment process of claim 1 , wherein the UV-curable maskant comprises an acrylated urethane epoxy.

5. The turbine component surface treatment process of claim 1 , wherein treating the exterior surface comprises coating the exterior surface, and wherein the treatment material comprises a coating material.

6. The turbine component surface treatment process of claim 1 , wherein the UV-curable maskant comprises a braze stop-off material.

7. The turbine component surface treatment process of claim 1 , wherein passing the UV-curable maskant through the one or more fluid flow passages is achieved at least partially via a pressurized gas.

8. The turbine component surface treatment process of claim 1 , wherein treating the exterior surface comprises cleaning the exterior surface, and wherein the treatment material comprises a cleaning material.

Assignees

• Gen Electric

Inventors

• Baummer James Carroll
• Reid Thomas Robert

Classifications

• B05D3/067

  Curing or cross-linking the coating · CPC title

• F05D2230/90

  Coating; Surface treatment · CPC title

• C23C14/042

  using masks · CPC title

• B05C7/00

  Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work · CPC title

• B05C9/12

  the auxiliary operation being performed after the application (B05C9/14 takes precedence) · CPC title