Patent ID: 6908657
Filing Date: 2005-06-21
Classification: B23P,C23C,F01D,F05D,Y10T

Abstract:
1. A component having a coating on a first surface thereof and a machined through-hole from which has been removed a deposit that was contiguous with the coating with the result that the through-hole has a first through-hole surface defined by the component and a second through-hole surface defined by a portion of the coating exposed by removal of the deposit, the deposit being removed by directing a liquid-containing jet at the through-hole from a second surface of the component opposite the first surface, the jet containing non-abrasive particulate media and being emitted from a nozzle at a pressure insufficient to remove substantially all of the deposit from the through-hole if the particulate media were not present in the jet, wherein the through-hole is free of debris from the deposit, the first through-hole surface is impact-flattened to have a better than as-machined surface finish, the second through-hole surface is deburred and smoothly primarily by impact fracturing of the deposit and not by erosion or abrasion of the deposit and the through-hole is characterized by a better than as-machined discharge coefficient.