1575 COOLANT RECOMMENDATIONS FOR ALL INSERTS Material Hardness Coolant pressure (bar) Coolant flow rate (l/min) Powder steel inserts Carbide inserts BHN KG Nmm² 9.5- 13.00 13.517.50 18.0- 24.0 25.0- 35.0 35.5- 48 48.5- 65.0 66.0- 114 9.5- 13.00 13.517.50 18.0- 24.0 25.0- 35.0 Free machining steel 1118, 1215, 12L14 etc. 100250 38- 88 370870 12.8 8.3 9.6 7.9 6.9 3.5 6.2 20 16.5 16.5 15.2 9.6 11.4 19.7 30.3 53 125 167 12.2 16.3 25.2 41.5 Low carbon steel 1010, 1020, 1025, 1522, 1144, etc. 85- 275 30- 96 300940 11.8 6.2 6.6 5.5 5.2 2.8 4.5 17.5 11 11 11.8 9.5 9.8 15.9 26.5 45.4 114 144 11.4 13.3 20.6 36.5 Medium carbon steel 1030, 1040, 1050, 1527, 1140, 1151 etc. 125325 46- 111 4501090 11.4 5.9 6.2 5.2 4.8 2.8 4.5 17.2 9.7 10.4 10.4 9.1 9.8 15.5 22.7 45.4 114 144 11.3 12.5 20 33.8 Alloy steel 4140, 5140, 8640, etc. 125375 46- 129 4501265 11.4 5.2 5.5 4.8 4.2 2.4 3.5 16.5 9.3 9.7 7.9 9.1 9.1 14.8 22.7 41.6 106 125 11.1 12.3 19.3 30 High strength alloy 4340, 4330V, 300M etc. 225400 77- 139 6001365 10.7 4.2 3.5 2 2 1.7 2 14.5 5.2 4.1 3.1 9.1 8.3 11.7 19 30 87 98 10.4 9.1 12.6 18.8 Structural steel A36, A285, A516, etc 100350 38- 121 3701180 11.4 5.9 5.5 3.8 3.5 2 3.5 15.8 9 7.9 6.9 9.1 9.8 14.8 23 38 98 125 10.8 12 17.5 27.8 Tool steel H-13, H-21, A-4, 0-2, S-3, etc. 150250 50- 88 500870 10.7 4.2 3.5 2 2 1.7 2 14.5 5.2 4.8 3.4 9.1 8.3 11.7 19 30 87 98 10.4 9.1 13.6 19.7 High temp. alloy Hastelloy B, Inconel 600, etc. 140310 49- 101 480990 10.7 4.5 3.8 2.4 2 2 3.1 16.5 11.4 12.4 11 9.1 8.7 12.1 18.9 30 98 125 11.1 13.5 21.9 35.4 Titanium alloy 140310 49- 101 480990 10.7 4.5 3.8 2.4 2 2 3.1 16.5 11.4 12.4 11 9.1 8.7 12.1 18.9 30 98 125 11.1 13.5 21.9 35.4 Stainless steel 400 Series 416, 420, etc. 185350 65- 121 6401180 11.8 5.9 5.2 3.8 3.5 2 3.1 22.7 16.5 17.9 17.2 9.5 9.8 14 23 38 98 117 13 16.3 26.3 44.2 Stainless steel 300 Series 304.316, etc. 135275 49- 96 480940 11.8 5.9 5.2 3.8 3.5 2 3.1 22.7 16.5 17.9 17.2 9.5 9.8 14 23 38 98 117 13 16.3 26.3 44.2 Super duplex stainless steel 135275 49- 96 480940 11.8 5.9 5.2 3.8 3.5 2 3.1 22.7 16.5 17.9 17.2 9.5 9.8 14 23 38 98 117 13 16.3 26.3 44.2 Hardened steel 300500 104139 10201365 10.7 4.2 3.5 2 2 1.7 2 14.5 5.2 4.8 3.4 9.1 8.3 11.7 19 30 87 98 10.4 9.1 13.6 19.7 Nodular, grey, ductil cast iron 120320 44- 104 4301020 11 4.5 4.2 2.8 2.4 2 2.4 15.5 7.2 6.2 6.2 9.1 8.7 12.5 19 34 98 106 10.7 10.8 15.4 26.5 Cast aluminium 30- 180 10- 62 100600 14.5 12.4 15.8 11 8.6 3.5 5.5 24.1 22 21.7 19.6 10 14 23 34 61 125 159 13.4 18.8 29 47.2 Wrought aluminium 30- 180 10-62 100600 14.5 12.4 15.8 11 8.6 3.5 5.5 24.1 22 21.7 19.6 10 14 23 34 61 125 159 13.4 18.8 29 47.2 Aluminium bronze 100250 38- 87 370855 12.8 8.3 9.7 8 6.9 3.5 6.2 20 16.5 16.5 15.2 9.6 11.4 19.7 30.3 53 125 167 12.2 16.3 25.2 41.5 Brass 100 38 370 11 4.5 4.2 2.8 2.4 2 2.4 24.1 22 21.7 19.6 9.1 8.7 12.5 19 34 98 106 13.4 18.8 29 47.2 Copper 60 21 200 12.8 8.3 9.7 8 6.9 3.5 6.2 20 16.5 16.5 15.2 9.6 11.4 19.7 30.3 53 125 167 12.2 16.3 25.2 41.5 Fibreglass, carbon fibre, graphite 100250 38- 88 370870 12.8 8.3 9.6 7.9 6.9 3.5 6.2 20 16.5 16.5 15.2 9.6 11.4 19.7 30.3 53 125 167 12.2 16.3 25.2 41.5 Coolant Multiplier Holder lenght 3×D 4×D 5×D 8×D 10×D 12×D 15×D see above chart 1.3 1.5 2 3 Coolant recommendation Example: to drill 25 mm diameter hole with powder steel insert in alloy steel with a hardness value 125-375 BHN 5×D holder: 4.8 bar; 22.7 l/min 12×D holder: 4.8 bar × 2 = 9.6 bar; 22.7 l/min × 2 = 45.4 l/min 15×D holder: 4.8 bar × 3 = 14.4 bar; 22.7 l/min × 3= 68.1 l/min Cooling nozzle max. 30 bar 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
RkJQdWJsaXNoZXIy MTgxNTQ=