1st recommendation for general purpose and interrupted machining KS6050 High Cast iron KS6015 CS7050 Cutting speed High fracture resistance and wear resistance by reducing the grain boundary phase and high aspect ratio structure of Si3N4 1 Stable machining of cast iron Low KS6050 Low Fracture resistance (Toughness) High Continuous Light Interruption Interruption High fracture resistance and wear resistance by reducing the grain boundary phase and high aspect ratio structure of Si3N4 Grain boundary phase comparison Mechanical and thermal property is improved by controlling grain boundary phase KS6050 Si3N4 Glass The grain boundary phase contained a high proportion of glass, therefore its toughness will be weakened by cutting heat Conventional grade B Si3N4 Glass Fracture resistance comparison (Internal evaluation) Cutting length (m) 0 0.6 1.2 1.8 2.4 3 KS6050 KS6050 (10 Passes) Bridging Crack de ection Crack Competitor B Dry Wet Cutting conditions: Vc = 900 m/min, fz = 0.5 mm/t, ap = 2 mm Workpiece: 450-10S (4-hole block) Competitor B (2 Passes) Crack propagation Large aspect ratio Controls crack propagation Fracture resistance improvement High speed machining CS7050 Improved coating adhesion provides better wear resistance 1 For high speed finishing of cast iron Low Cutting speed High Cast iron KS6015 CS7050 KS6050 Low Fracture resistance (Toughness) High Continuous Light Interruption Interruption Silicon nitride ceramic with CVD coating ensures a higher level of productivity 2
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