169 Cutting conditions / Schnittwertempfehlungen VHGR VHGR for roughing applications on graphite: VHGR für Schruppbearbeitung in Graphit: • High material removal rate Hohe Zerspanungsleistung • Special roughing pitch Spezielle Schruppverzahnung • Designed for high feeds on graphite applications Entwickelt für hohe Vorschübe in der Graphit- Bearbeitung Slot milling / Nutfräsen ap max. (mm) ae max. (mm) Vf (mm/min) < 4,0 4,0 < 3750 < 6,0 6,0 < 4500 < 8,0 8,0 < 6000 < 10,0 10,0 < 7500 < 12,0 12,0 < 9000 < 16,0 16,0 < 11250 Shoulder milling / Eckfräsen ap max. (mm) ae max. (mm) Vf (mm/min) < 10,0 < 2,0 < 5000 < 15,0 < 3,0 < 6000 < 20,0 < 4,0 < 8000 < 25,0 < 5,0 < 10000 < 30,0 < 6,0 < 12000 < 35,0 < 8,0 < 15000 Ød (mm) 4,0 6,0 8,0 10,0 12,0 16,0 Material group TSR Hardness (N/mm2) HB N5.4 N5.5 N5.6 Cutting speed Vc m/min < 600 < 600 350 - 500 Coolant air air air ap a e = Ød ap ae ap up to 2,50 x d ae up to 0,50 x d ap up to 1,00 x d VHGR 2 080 078 08 02 Workpiece Material: Graphite Van Hoorn Competitor Ø 8,0 mm 16,0 mm V c 452m/min 754 m/min n 18.000 rpm 15.000 rpm F z * mm/t 0,111 mm/t Z 3 2 V f 4.000 mm/min 5.000 mm/min a p 7,0 mm 0,2 mm a e 2,5 mm 3,0 mm Coolant air air Q 70 mm3/min 3 mm3/min
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