T6 P7 TKFB – GQ chipbreaker Back turning with 3D molded chipbreaker for single-pass machining KTKFR1212JX-12 TKFB12R28005- GQ PR1535 Cutting conditions Grooving Vc = 80 m/min ap = 0.3 mm f = 0.02 mm/rev External turning Vc = 80 m/min ap = 3.0 mm f = 0.06 mm/rev T7 P8 KGD for automatic lathe Good chip control at low feed rate KGDSR1616JX-2B GDM2020N-015PF PR1535 Cutting conditions Vc = 80 m/min f = 0.04 mm/rev PR1535MEGACOAT NANO Achieves long tool life and stable stainless steel machining with the combination of a tough substrate and a special Nano coating layer 1 Toughening by a new cobalt mixing ratio *In-house evaluation 2 Improved stability by optimization and homogenization of grains in the base material 3 MEGACOAT NANO coating technology for long tool life and stable machining 23% Fracture toughness* Crackin2g3co%mparison by diamoFnradcitnudreenter (In-houIsme epvaalcutation) toughness* resistance Impact resistance PR1535 base material Conventional material Short cracks Long cracks Coating properties (In-house evaluation) Hardness (GPa) 40 35 30 25 20 15 10 400 TiCN TiN 600 MEGACOAT NANO TiAIN MEGACOAT 800 1,000 1,200 1,400 Oxidation temperature ( ) Low Oxidation resistance High MEGACOAT base layer structure Note PR1535 shows superior performance in steel machining under unstable conditions, preventing early cracking and variation in tool life. Wear resistance evaluation (In-house evaluation) Fracture resistance evaluation (In-house evaluation) Maximum size of damage on edge (mm) 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 Competitor B Poor chip control Conventional A PR1535 Poor chip control 50 100 150 200 250 Number of processing passes (pass) Tool life x2 PR1535 Conventional C Stable machining 300 350 Competitor D 0 Without chip fracture 200 400 600 800 1,000 Number of impacts Cutting conditions: n = 1,273 min-1(Vc = 80 m/min), f = 0.025 mm/rev, wet (Oil-based) Workpiece : X5CrNi18-10 (ø20) Cutting conditions: n = 509 min-1(Vc = 80 m/min), f = 0.12 mm/rev, wet (water soluble) Workpiece : X5CrNi18-10 (ø50, 10 mm width x4) * Evaluated with the KGD 2
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