MECH recommended cutting conditions : 1st recommendation : 2nd recommendation Recommended cutting conditions (when using a notched insert) Workpiece material fz (mm/t) MEGACOAT NANO PR1535 Recommended insert grades (Cutting speed Vc m/min) MEGACOAT PR1225 PR1230 PR1210 Carbon steel 0.08 – 0.1 – 0.15 120 – 180 – 250 120 – 180 – 250 120 – 180 – 220 Alloy steel 0.08 – 0.1 – 0.15 100 – 160 – 220 100 – 160 – 220 100 – 160 – 200 Mold steel 0.08 – 0.1 – 0.15 80 – 140 – 180 80 – 140 – 180 80 – 140 – 160 Gray cast iron 0.08 – 0.15 – 0.18 120 – 180 – 250 Nodular cast iron 0.08 – 0.15 – 0.18 100 – 150 – 220 * Titanium alloys 0.08 – 0.1 – 0.15 * Cutting with coolant is recommended for titanium alloy. 40 – 60 – 80 30 – 50 – 70 1. The recommended cutting conditions above are for notched inserts. 2. If using an insert without notch, the cutting depth (ap) and width (ae) should be less than 60% of those of a notched insert. PVD coated carbide PR830 100 – 140 – 180 100 – 140 – 180 100 – 120 – 150 Workpiece material Aluminum alloy (Si 13% or less) Aluminum alloy (Si 13% or less) fz (mm/t) 0.05 – 0.3 0.05 – 0.2 Recommended insert grades (Cutting Speed Vc m/min) DLC coated carbide Carbide PDL025 GW25 200 – 1,000 200 – 800 200 – 300 200 – 300 When using inserts with corner-R (rε) 1.6 or larger, additional modifications of the cutter body will be necessary. Ref. to the table below for the recommended modifications. Additional grind off is not necessary when corner-R is 1.2 mm or less. Insert corner-R(rε) 1.6 2.0 2.4 3.1 4.0 Additional processing dimension to body corner (mm) R1.0 R1.2 R1.6 R2.5 * Round-shaped additional processing is recommended. When applying chamfer shaped additional processing, do not cut away too much. Body corner Additionally processed Insert with large corner-R(rε) Pre-processing Post-processing 24
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