Table 1: Specification of surface microstereometry (3D) after the EDM and then the roto-peen machining.

Parameters EDMParameters roto-peenMicrostereometric parameters 3D
U (V)I (A)Ti (μs)v (rev/min)t (min) (μm) (μm) (μm) (1/μm) (%)

1202420012.4087.247.50.400.100.80
1202420050002.54.8452.912.30.210.025.81
12024200500052.0427.314.20.080.010.00
1202420070002.56.3567.625.80.230.030.20
12024200700053.3741.714.60.120.020.30
804840013.30149.092.60.40.030.2
804840050002.511.3088.722.90.310.044.52
8048400500056.2350.417.60.200.031.73
804840070002.56.195519.80.220.030.40
8048400700056.5157.817.40.160.023.26
160168008.9178.835.40.260.060.60
1601680050002.55.4248.113.30.160.016.20
16016800500055.1947.212.80.160.019.55
1601680070002.55.0048.115.70.170.024.39
16016800700053.7853.716.40.160.030.60
16061004.4747.416.50.270.010.50
160610050002.51.3115.315.30.050.020.10
1606100500051.1428.528.50.060.020.00
160610050007.51.3617170.090.020.01
160610070002.51.6635.535.50.080.020.00