To carry out the analysis, standard ONA technology was used for nickel alloy, a 2-axis rotary table and two different flushing conditions. On the one hand, good flushing conditions (closed nozzles) and, on the other, worse flushing conditions (open nozzles). In addition, 0.25 coated wire was used for roughing cut.
These two different scenarios chosen for the study (open and closed nozzles) enabled us to carry out different tests to properly evaluate erosion time, as this depends to a great extent on the flushing conditions. It is often the case that, due to the geometrical characteristics of turbine discs, cannot be used closed nozzles.