Заказ инструмента: http://steelcam.org | 8 (343) 382-52-03 | sales@sverla-ekb.ru 7690VA & 7690VAP Recommended Speeds End Mills & Face Mills Speed vc (m/min.) Wear Resistance 7690VA & -- + 7690VAP Series Speed min. - max. Coolant Recommendation PVD CVD PVD PVD PVD CVD CVD Uncoated Recommended  Possible  X Grade X Grade X Grade Standard Standard Standard Standard Micrograin Rm and ISO Materials X400 X500 X700 SP6519 SP4019 MP91M SC3025 GH1 Hardness <600 N/mm2 <180 HBN 130 - 270 130 - 295 140 - 345 Unalloyed Steel <950 N/mm2      <280 HBN 115 - 240 115 - 260 120 - 305 700-950 N/mm2 P 200-280 HBN 95 - 200 100 - 210 100 - 230 105 - 270 Alloyed 950-1200 N/mm2        Steel 280-355 HBN 70 - 150 75 - 160 75 - 175 80 - 205 1200-1400 N/mm2 355-415 HBN  45 - 95  50 - 100  50 - 110  50 - 130 Austenitic + Ferritic 300 series 115 - 250 115 - 260 115 - 270 120 - 280 Stainless Steel Martensitic         M 400 series 100 - 220 105 - 230 105 - 235 110 - 250 Refractory PH Stainless P.H.  50 - 110  50 - 115  50 - 120 Grey GG-Ft 140 - 295 145 - 365 150 - 395 135 - 290 Spheroidal-Ductile K Cast Iron GGG-FGS   110 - 240  115 - 285  120 - 335   120 - 245 Malleable GTS - MN/MP 100 - 220 105 - 260 105 - 275 115 - 200 Aluminium & Alloys < 16% Si 116 HBN 400 - 2895 400 - 3050 Aluminium N & Alloys Aluminium + Silicon   > 16% Si 92 HBN 295 - 2320 295 - 2440 Iron Based 23 - 48 23 - 52 23 - 55 24 - 63 High Cobalt Based 21 - 44 22 - 46 22 - 48 23 - 52 S Temperature     Alloys Nickel Based 24 - 51 25 - 53 25 - 55 26 - 59 Titanium Based 35 - 73 36 - 75 36 - 79 37 - 84 Hard Steel >1400 N/mm2 45 - 95 50 - 100 50 - 105 Hard >415 HBN H Materials Chilled Cast Iron    >1400 N/mm2 35 - 80 40 - 90 40 - 95 > 400 HBN Calculation of the average chip thickness in relation with the ae (Radial Engagement) if ae is less than 50% of dia. Formula: Programme Feed Rate (fz) hm = Average chip thickness Formula: Average Chip Thickness (hm) ae = Radial engagement fz = hm x d fz = Feed per tooth hm = fz x ae ae d = Cutter diameter d A58 www.kennametal.com