220390 1503 We recommend that you drill a pilot hole when using series 22 0390 highspeed, deep hole drill bits. Preferentially you should use a tool with 3×D drilling depth (22 0405), or alternatively up to 5×D drilling depth with internal cooling. The point angle of 140° as well as the diameter tolerance m7 are aligned. A minimum coolant pressure of 20-30 bar is sufficient. Now drill using the 22 0390 series (approx. 1-2×D), with a reduced feed rating and cutting speed of approx. 40-50% of the recommended value. Then increase the feed rating and the cutting speed, without interruption, to the recommended benchmarks. The drilling strategy should be conducted without ventilation of interrupting the feed rate. After reaching the desired drilling depth, the drill speed should be reduced to approx. 30% in order to extract the drill from the hole. The drill being completely still can be an advantage in extreme cases. Our regrinding service ensures short delivery times and a 100% lifetime guarantee. Recommended cutting conditions for Karnasch solid carbide drills < 40×D EN-GJS-800-8 (ADI800) 0.10 0.12 0.13 0.16 0.20 0.22 0.25 ADI EN-GJS-1000-5 (ADI1000) 800 - 1400 N EN-GJS-1200-2 (ADI1200) Vc 70 - 90 EN-GJS-1400-1 (ADI1400) 0.12 0.15 0.16 0.20 0.25 0.28 0.30 EN-GJV250 (GGV25) EN-GJV350 (GGV35) 0.12 0.15 0.16 0.20 0.25 0.28 0.30 7.3 EN-GJV400 (GGV40) EN-GJV500 (GGV50) Vc 80 - 100 Si Mo 6 0.16 0.18 0.20 0.25 0.32 0.38 0.40 0.7040 / GGG 40 7.3 0.7050 / EN-GJS-500-7 (GGG50) 0.12 0.15 0.16 0.20 0.25 0.28 0.30 7.4 0.7070 / EN-GJS-700-2 (GGG70) 7.5 0.8035 / EN-GJMW-350-4 (GTW35) Vc 80 - 100 7.6 0.8170 / EN-GJMW-700-2 (GTS70) 0.16 0.18 0.20 0.25 0.32 0.38 0.40 0.6010 / EN-GJL-100 (GG10) 0.6020 / EN-GJL-200 (GG20) 0.12 0.15 0.16 0.20 0.25 0.28 0.30 7.1 0.6025 / EN-GJL-250 (GG25) 7.2 0.6030 / EN-GJL-300 (GG30) Vc 90 - 120 0.6035 / EN-GJL-350 (GG35) 0.16 0.18 0.20 0.25 0.32 0.38 0.40 0.6040 / EN-GJL-400 (GG40) 1.1750 / C75W 1.2067 / 102 Cr 6 0.08 0.10 0.11 0.12 0.15 0.18 0.20 1.2080 / X210 Cr 12 2.1 1.2083 / X42 Cr 13 1.2343 / X38 Cr Mo V5 Vc 60 - 80 1.2419 / 105 WCr 6 0.16 0.18 0.20 0.25 0.30 0.35 0.40 1.2767 / X45Ni Cr Mo 4 1.8540 / 34 Cr Al 6 0.08 0.10 0.11 0.12 0.15 0.18 0.20 2.2 1.8519 / 31 Cr MoV 9 1.8550 / 34 Cr Al Ni 7 Vc 70 - 90 0.16 0.18 0.20 0.25 0.30 0.35 0.40 1.5752 / 14 Ni Cr 14 0.08 0.12 0.14 0.16 0.20 0.25 0.27 2.1 1.7043 / 38 Cr 4 2.2 1.7131 / 16 Mn Cr 5 Vc 70 - 90 1.7264 / 20 Cr Mo 5 0.15 0.18 0.20 0.25 0.30 0.35 0.40 50 Mn Si 3 36 Ni Cr 6 0.08 0.12 0.14 0.16 0.20 0.25 0.27 1.3 38 Cr 2 28 Cr 4 Vc 80 - 100 41 Cr 4 0.15 0.18 0.20 0.25 0.30 0.35 0.40 42 Cr Mo 4 C22 C45 C60 0.08 0.12 0.14 0.16 0.20 0.25 0.27 1.2 C30E C45E Vc 80 - 100 C 60 E 100 Cr Mn 6 0.15 0.18 0.20 0.25 0.30 0.35 0.40 43 Cr Mo 4 3.0 4.0 5.0 6.0 8.0 10 12 Material group Example DIN-EN Cutting speed Vc m/min Recommended feed rate (mm per rev.) based diameter range 115 Mn Pb 30 46 S 20 0.08 0.12 0.14 0.16 0.20 0.25 0.27 1.1 60 S 20 115 Mn 37 Vc 80 - 110 46 Pb 20 0.15 0.18 0.20 0.25 0.30 0.35 0.40 TOOLOX 33 Vc 40 - 50 0.08 0.10 0.15 0.18 0.20 0.22 0.25 HB 280-330/≈27-33 HRC TOOLOX 44 Vc 30 - 40 0.08 0.10 0.14 0.16 0.18 0.20 0.22 HB 410-475/≈41-47 HRC Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
RkJQdWJsaXNoZXIy MTgxNTQ=