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NC6205 / NC6210 Chip breaker line-up Negative type Positive type ap(inch) GR 1 st recommendation VK -MA (No chip breaker) ap(inch) 1 st recommendation C25 VM B25 HMP New CVD grade for cast iron turning NC6205 / NC6210 Feature of VK chip breaker fn(ipr) • Strong cutting edge Excellent chipping resistance for machining in interrupted cutting conditions • Special nose “R” shape Reduces the frictional heat and cutting resistance • Broad area Decreases the vibration to enhance clamping power between insert and holder fn(ipr) Grades Machining Type Finishing Grade NC6205 Recommended cutting speed, vc(sfm) Chip breaker Recommended feed and depth of cut rate Gray cast iron Ductile cast iron (nose R = 0.8 ) fn(ipr) ap(inch) 660~1,650 594~1,320 VM 0.004~0.020 0.039~0.197 Medium and roughing NC6210 495~1,320 462~1,155 VK 0.006~0.022 0.453~0.236 Roughing NC315K 396~990 330~825 -MA 0.008~0.024 0.079~0.276
Cutting performance test Were resistance Wear(inch) 0.012 0.010 0.008 0.006 0.004 0.002 Competitor K10 Competitor K05 NC6210 NC6205 0 0 1 2 3 4 5 Machining time(min) • Workpiece : Gray cast iron(GG25), In high speed machining • Cutting condition : vc(sfm) = 1.980, fn(ipr) = 0.012, ap(inch) = 0.059 Dry, External continuous cutting • Designation : Insert CNMA423(NC6205, NC6210), Holder DCLNL20-4D Machining Machining time time 4min 4min [ NC6205 ] [ Competitor K05 ] Machining Machining time time 4min 4min [ NC6210 ] [ Competitor K10 ] Fracture Resistance NC6210 Competitor K10 NC6205 Competitor K05 Test examples NC6210 Competitor K10 Wear Fracture Wear Fracture Cutting time(min) 50 80 160% more Cutting pass / corner • Workpiece : Ductile cast iron(GGG600), In interrupted machining • Cutting condition : vc(sfm) = 396 fn(ipr) = 0.012 ap(inch) = 0.059 Wet Interrupted facing • Designation : Insert CNMA432(NC6205, NC6210) Holder DCLNL20-4D • Workpiece : Gray cast iron(GG25), Blake Disc • Cutting condition : vc(sfm) = 1,287 fn(ipr) = 0.010 ap(inch) = 0.079 Wet • Designation : Insert CNMG433-VK(NC6210) Holder PCLNR16-4D New CVD grade for cast iron turning NC6205 / NC6210 NC6210 Competitor K10 8 11 140% more Cutting pass / corner • Workpiece : Gray cast iron(GG25), Nipple • Cutting condition : vc(sfm) = 1,155 fn(ipr) = 0.010 ap(inch) = 0.028 Wet • Designation : Insert CNMG432-VK(NC6210) Holder PCLNR16-4D Grades NC6210 Competitor K05 80 93 120% more Cutting pass / corner • Workpiece : Ductile cast iron(GGG50), Shaft • Cutting condition : vc(sfm) = 660 fn(ipr) = 0.011 ap(inch) = 0.079 Wet • Designation : Insert WNMG0433-VK(NC6205) Holder DWLNL16-4D
Page 2 and 3: How to access KORLOY website on mob
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HEAD OFFICE Holystar B/D 953-1, Dok
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