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US 6,273,788 B1Granted
Sustained surface scrubbing
AssigneeGeneral Electric Company
InventorJames S. Shaw
Life of this patent
Estimating the term…
Abstract
The surface of a workpiece is treated by discharging a stream of pliant shot in a carrier fluid at a shallow angle of incidence thereagainst. The shot is then scrubbed laterally along the surface for selectively removing target material therefrom.
Claims24
A method of treating a surface of a workpiece comprising:
- discharging a stream of pliant shot in a carrier fluid at a shallow angle of incidence against said surface;
- and
- scrubbing said shot laterally along said surface for selectively removing target material therefrom.
A method of treating a surface of a workpiece having a discontinuity adjoining said surface to define a target, comprising:
- discharging a stream of pliant shot in a carrier fluid at a shallow angle of incidence against said surface;
- and
- scrubbing said shot along said surface for selectively removing said target adjoining said surface.
A method of treating a surface of a gas turbine engine combustor liner comprising:
- laser drilling a plurality of film cooling holes through said liner to define a plurality of corner targets including laser expulsion therein;
- discharging a stream of pliant shot in a carrier fluid at a shallow angle of incidence against said surface;
- and
- scrubbing said shot parallel to and along said surface and in impingement against said corner targets for selectively removing said laser expulsion therefrom and radiusing thereof.
1 more element
Dependencies are inferred from the claim text.