ATA International Product Catalogue

220322 220322 220322 1481 90° 6×D 12×D 18×D KFv 0.8 0.6 0.4 Recommended cutting data for solid carbide twist drill, with interior cooling supply Practical test for solid carbide micro drills with interior cooling supply Recommended cutting data for solid carbide twist drill, with interior cooling supply 1.1 – 1.2 St37, St42, C22, GS38 <600 N/mm² 100-120 0.07 - 0.15 1.3 St50, St60, C35, GS52 <700 N/mm² 85-105 0.07 - 0.15 St70, C45, GS62 >700 N/mm² 75-90 0.05 - 0.12 1.4 – 1.5 16MnCr45, 42CrMo4, <900 N/mm² 2.1 – 2.2 – 3.1 50CrNi13, C60 65-85 0.06 - 0.12 90 MnCrV8, 100Cr6 <1000 N/mm² 50-70 0.05 - 0.12 X210Cr12, 34 CrAINi7 >1000 N/mm² 40-60 0.05 - 0.12 4.1 – 4.2 X12Cr Nis 18 8 35-60 0.04 - 0.08 4.3 X10CrNINb 18 9 35-60 0.04 - 0.08 7.1 – 7.2 – 7.3 GG 20, GGG40, GTS45 <200 HB 85-105 0.15 - 0.25 7.4 – 7.5 – 7.6 GG30, GGG60, GTW40 <250 HB 75-90 0.15 - 0.25 GG40, GGG70, GTS70 >250 HB 65-80 0.15 - 0.25 8.4 350-450 HB 40-70 0.06 - 0.12 The indicated standard values for the cutting speed Vc depends on drilling depth related to the diameter to multiply by the correction factor KFv. The indicated cutting date in our guidline tabel are valid for use in shrinking or hydraulic expansion chuck. Material group Material Strength Cutting Speed Feed per revolution (mm) based on Hardness Vc (m/min) drill diameter range 1.0 - 2.9  12 × D drilling starting from 0.8 mm with interior cooling supply isn’t everyones thing. As pioneer in HSC-drills with drilling dephts over 5 × D our reputation is well known all over the world. Productive time of our customer decreased up to 600%. Increased pro- cess security and cutting-edge life at the same time. The latest products are Mini-solid carbide drills, starting from 0.8 mm with interior cooling supply with drilling depht up to 12 × D . The competition-pressure from our cus- tomers in the worldwide increasing globalisation forced us into this direction. These HSC-Mini drills with interior cooling supply 6 × D and 18 × D can be supplied in the dimen- sions 1.0 mm to 2.9 mm in 0.1 mm steps from stock. From 3.0 mm to 20.0 mm see our existing program in 3 × D, 5 × D, 8 × D, 12 × D. Karnasch pilot drill Art. 22 0321 Drill guided in pilot hole No gouged step We recommended a pilot drilling for the excess length tools art.-no. 22 0322 - 18×D. Please use for the pilot drilling our art.-no. 22 0321 without interior cooling. Alternative art.-no. 22 0322 with interior cooling in the shortest l3 version. These pilot drills are, with the diameter tolerance m7, to the excess lenght tools with tolerance h7 coordi- nated. Recommended drilling depht of the pilot borehole 3-5×D. Coolant pressure 30-80 bar. Cooling: We recommend to use a high performance cutting oil to achieve a good perfor- mance. You can use an alternative emulsions with EP-contens. Quality of the filtersystem: A very good filtersystem is necessary when using such small diameter. The filter should have the following quality: Filter <0.01 mm for drill  <1 mm Filter >0.02 mm for drill  >1 mm Chip removal: In some cases it is necessary to remove the chips. This depends on the material: We recommend as a guidline: depth to 6×D: no pecking depth to 10×D: 0 - 2 peckings depth to 18×D: 0 - 4 peckings depth to 24×D: 0 - 6 peckings depth to 30×D: 0 - 8 peckings The Karnasch drill should be withdrawn completely from the drill hole for pecking. Work Material Material Group Strength in N/mm  2.00–2.95 Cutting Speed (m/min) Feed (mm/rev) Mild Steel 1.1 ≤ 600 60 (50–70) 0,10 (0,08–0,12) Carbon Steel Alloy Steel 1.2–2.1–2.2 600–950 50 (40–60) 0,09 (0,06–0,12) 2.2–2.3–2.5–2.6 950–1,200 50 (40–60) 0,07 (0,05–0,10) Stainless Steel 3.1 680 30 (20–40) 0,06 (0,04–0,08) Cast Iron 7.1–7.2 ≤ 105 HB 50 (40–60) 0,09 (0,06–0,12) Ductile Cast Iron 7.4 ≤ 133 HB 50 (40–60) 0,07 (0,05–0,10) Heat Ressistant Alloy 31–32 ≤ 280 HB 15 (10–20) 0,03 (0,01–0,05) Work Material  mm Dilling depth mm Vc m/min n U/mm f mm/rev Vf mm/min C 45 C 45 1.0 1.0 10 10 60 60 18,800 18,800 0.05 0.10 950 1,880 X 5 Cr Ni Cu Nb 16 - 4 2.0 24 42 6,600 0.08 530 X 5 Cr Ni Mo 17122 2.0 20 65 10,300 0.12 1,230 99% Titanium (Dental implant) 2.5 25 30 3,800 0.015 57 42 Cr Mo 4 2.9 30 75 8,200 0.09 740 Inconel 718 2.2 13 12 1,700 0.05 85 11 Index 10 9 OIL 8 7 6 5 4 3 2 1