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Application recommendations
Inserts
Examples for achievable surface qualities
depending on the corner prole of the inserts:
Aluminium Cutting data fz = 0.14 mm, vc = 2.000 m/min
PCD-inserts with corner radius 0.4 => Ra = 3.2 m
PCD-inserts with chamfer and wiper geometry => Rz = 17.0 m
Cutting data fz = 0.13 mm, vc = 250 m/min
Ra = 0.25 m
Rz = 2.0 m
Cast iron
Inserts with corner radius 0.4 => Ra = 1.7 m
Inserts with chamfer and wiper geometry => Rz = 11.5 m
Cutting data fz = 0.13 mm, vc = 180 m/min
Ra = 0.9 m
Rz = 6.0 m
Steel
Inserts with corner radius 0.4 => Ra = 1.4 m
Inserts with chamfer and wiper geometry => Rz = 10.0 m
Ra = 0.7 m
Rz = 5.5 m
Mean value of roughness Ra Average peak-to-valley height Rz
is the arithmetical mean value of the absolute values is the average value of the single peak-to-valley
of all distances of the roughness profile R from the heights of five successive single measuring lengths le
centre line within the total measuring length lm
Rz = 1 ( Z1 + Z2 + Z3 + Z4 + Z5 )
Ra Z1 5
Z2 Z3 Z4 Z5
Im Ie
Im = 5 le
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