2 Longer tool life with low-resistance JS chipbreaker and tough PVD coating Low cutting force JS chipbreaker Heat at the cutting edge is suppressed due to sharp cutting performance Long tool life Greater toughness PR1535 Fracture resistant with a tough substrate and high heat-resistant MEGACOAT NANO coating technology Tool life comparison (internal evaluation) MECHT showed good cutting edge condition, and tool life was 50% longer than competitor B. MECHT x1.5 Further machining possible Cutting edge after machining 50 min MECHT Good Comp. A Fracture Competitor A Fracture 0 50 100 150 Cutting time (min) Cutting conditions: Vc = 40 m/min, ap × ae = 43 × 20 mm, fz = 0.12 mm/t , ø50 (5 Flutes), wet (external and internal coolant), workpiece: Ti6Al4V Machine : BT50 Slotting titanium alloy (internal evaluation) ap = 20 mm (0.4xDC) Stable machining without chip clogging or chattering Chip Clogging: None Chattering: None Case study Aerospace part Ti6Al4V Vc = 55 m/min (n = 350 min-1) ap × ae = 24 × 16 mm fz = 0.09 mm/t (Vf = 126 mm/min) Wet (Internal coolant) MECHT50R-1711-3-4T-M BDMT170408ER-JS PR1535 (first stage) BDMT11T308ER-JS PR1535 (second and third stage) Cutting efficiency MECHT 20 126 Vf = mm/min Comp. B 84 Vf = mm/min x1.5 50 Cutting conditions : Vc = 40 m/min, ap × ae = 20 × 50 mm (Slotting), fz = 0.08 mm/t ø50 (5 Flutes), wet (external and internal coolant), workpiece: Ti6Al4V Machine: BT50 MECHT showed good chip evacuation and stable machining even with increasing feed rate. Machining efficiency was 50% better than that of the competitor with equivalent tool life. User evaluation Recommended cutting conditions Workpiece Titanium alloy (Ti6Al4V) Applications Shouldering Slotting Depth of cut (mm) ap ~Length of Cut (APMX) ~0.5DC ae ~0.5DC 1DC 2 fz (mm/t) 0.10 ~ 0.12 ~ 0.16 0.05 ~ 0.07 ~ 0.09 Recommended insert grade (Vc: m/min) MEGACOAT NANO PR1535 30 ~ 40 ~ 60 30 ~ 40 ~ 50
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