21-109
Internal use only
4NKT 090432R-HF
Turbine blade Case story Power generation Industry Customer
Part Name
Material
Operation
Date
M
Turbine blade
X22CrMoV12 ( HB 241 )
root semi-finishing
2020
Competitor XOMX 12
2 corners
Tool life
8
pcs/corner
4 corners Tool life
30
Tool life
+275%
pcs/corner
Maker
Tool
Insert
Dia. (Ø )
Zn
V(m/min)
F (mm/min)
Ap (mm)
Coolant
Tool life(pcs/corner)
Competitor
D50, 5z cutter
XOMX1204
50
5
200
1528
1
Ext.+Int.
8
TaeguTec
4N TF90-650-22R-09
4NKT 090432R-HF TT9080
50
6
200
1528
1
Ext.+Int.
30
Application
of 4NKT
• Root and airfoil semi-finishing with big corner radius
Strong cutting edge 4NKT HF type
• Finishing face milling for root & shroud area
No Wiper Flat
※ Insert without wiper flat makes less vibration and better surface finish at unstable blade setting