NTK Cutting Tools

Stable machining for Cast Iron components with interrupt cutting

Significantly improve productivity when replacing carbide tools with SX9
Features
  • Toughest ceramic grade makes higher feed rate possible
  • Excellent thermal shock and fracture resistance due to the needle-shaped particles formed during the ceramic manufacturing process
Tooling application
  • Turning
  • Milling / End milling

Gray cast iron as-cast skin

Grade map
↑High





SPEED
SX6
HC2 SP9
SX9
HC1,HW2 HC6
CP1
FINISH SEMI-FINISH  ROUGH
FEED

High→

Grade characteristics
Gray cast iron roughing application
- - - Scroll the table - - -
ISOMaterialCoolantGradevc (m/min) (SFM) ap (mm) (inch) f (mm/rev) (IPR)
Cast Iron
as-cast skin Turning
DRYSX9 300 – 800 1000 – 2600 -3.5 – .140 0.3 – 0.6 .012 – .024
Cast Iron
Rough-Mid-Finish Turning
300 – 800 1000 – 2600 -3.5 – .140 0.3 – 0.6 .012 – .024
Cast Iron
as-cast skin Milling
350 – 700 1200 – 2300 0.05 – 0.1 .002 – .004
Cast Iron
Rough-Mid-Finish Milling
350 – 700 1200 – 2300 0.05 – 0.1 .002 – .004
Machine component
Material :
Gray cast iron(FC400)
Workpiece condition :
as-cast skin
Cutting speed :
650m/min (SX9) 2170 SFM (SX9)
80m/min (Competitor’s CVD coated carbide) 270 SFM (Competitor’s CVD coated carbide)
Feed :
0.15 mm/rev .0059 IPR
DOC :
2.0 mm .0789 inch
Coolant :
DRY
SX9
850 pcs / corner
Competitor’s CVD coated carbide
300 pcs / corner

SX9 achieved stable machining results in this interrupted turning operation.
By replacing the CVD coated carbide with ceramic there was a significant reduction in cutting tool costs and an increase in production.

Brake disc
Material :
Gray cast iron(FC250)
Workpiece condition :
as-cast skin
Cutting speed :
450 m/min 1500 SFM
Feed :
0.40 mm/rev .0157 IPR
DOC :
2.0 mm .0787 inch
Coolant :
DRY
SX9
360 pcs / corner
Whisker ceramic
264 pcs / corner

SX9 machined at the same cutting conditions as the current whisker ceramic and resulted in a reduction in tooling cost for the customer.

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