2 Longer tool life and high speed machining Coolant is also directed from two directions towards the flank face of the insert to ensure effective cooling action Longer tool life and high-speed machining with improved wear resistance Discharges coolant in three directions: The cutting edge stays cool. Corner wear (mm) Corner wear (mm) Wear resistance comparison (In-house evaluation) Alloy steel (34CrMo4) 0.25 0.20 0.15 0.10 Internal coolant (7 MPa) 0.05 Internal coolant (Normal pressure: 0.4 MPa) External coolant (Normal pressure: 0.4 MPa) 0 20 40 60 Cutting time (min) Heat-resistant alloys (Inconel®718) 0.25 0.20 0.15 0.10 0.05 Internal coolant (7 MPa) Internal coolant (Normal pressure: 0.4 MPa) External coolant (Normal pressure: 0.4 MPa) 0 1 2 3 4 5 Cutting time (min) After machining 42.2 min Internal coolant 7 MPa After machining 3 min Wear resistance Internal coolant 7 MPa Wear resistance Internal coolant Normal pressure: 0.4 MPa Internal coolant Normal pressure: 0.4 MPa External coolant Normal pressure: 0.4 MPa External coolant Normal pressure: 0.4 MPa Cutting conditions: Vc = 250 m/min, f = 0.3 mm/rev, ap = 2 mm, wet CNMG120408 type, external turning Cutting conditions: Vc = 80 m/min, f = 0.15 mm/rev, ap = 0.5 mm, wet CNMG120408 type, external turning Using internal coolant improves wear-resistance in alloy steel and heat-treated steel High-pressure coolant is more effective 3
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