Way to manufacture inserts for steam cooled hot gas path components
OwnerRobert H. Devine, James Placko +3inventors
InventorsRobert H. Devine, James Placko, Justin Downs, Jon C. Schaeffer, Lance Peterson
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Abstract
A method for forming inserts for steam cooled hot gas path components involves casting the inserts and laser drilling the cast inserts with the ceramic casting core still in place. Thereafter, the ceramic core is removed through the use of a leachant. By laser drilling the holes with the ceramic core still in place, the ceramic core acts as a backer during the laser drilling which results in more precise drilling of the inserts and reduced processing time.
Claims12
A method of forming inserts for steam cooled hot gas path components in a turbine, said method comprising:
- casting the geometrical configuration of the insert;
- and
- laser drilling impingement holes in the cast insert without removing a ceramic casting core of the cast insert.
Dependencies are inferred from the claim text.