Page 301 - Demo

299DEEP HOLE DRILLINGISCAR-DEEP-DRILL Cutting Conditions for BTA and DTS Drilling MethodsThe main elements of cutting conditions for deep drilling are cutting speed and feed. When drilling holes, it is important to select the right cutting conditions in which the tool will work normally, i.e., most efficiently, in order to save the tool from premature wear, taking into account maximum productivity. Recommended initial conditions are shown in the table below, according to chipbreaker form and workpiece material.ISOMaterial Condition Tensile Strength [N/mm2] Material Group No.(1)Hardness HBGround Brazed Solid Drill Heads DSD-E0, DSD-E1, DSD-E3, DDD-E3, DSD-I1Dia. Range8.00-20.00 15.60-20.0020.01-31.0031.01-43.0043.01-65.00Vc(m/min) Feed Rate f (mm/rev)Pnon-alloy steel and cast steel, free cutting steel<0.25% C annealed 420 1 125 70-120 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3%u22650.25% C annealed 650 2 190 70-120 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3<0.55% C quenched and tempered 850 3 250 40-70 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3%u22650.55% C annealed 750 4 220 70-120 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3quenched and tempered 1000 5 300 55-100 0.05-0.1 0.08-0.12 0.1-0.15 0.13-0.17 0.15-0.28low alloy and cast steel (less than 5% of alloying elements)annealed 600 6 200 70-100 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3quenched and tempered930 7 275 55-100 0.05-0.1 0.08-0.12 0.1-0.15 0.13-0.17 0.15-0.281000 8 300 55-100 0.05-0.1 0.08-0.12 0.1-0.15 0.13-0.17 0.15-0.281200 9 350 55-100 0.05-0.1 0.08-0.12 0.1-0.15 0.13-0.17 0.15-0.28high alloyed steel, cast steel and tool steelannealed 680 10 200 50-85 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3quenched and tempered 1100 11 325 55-100 0.05-0.1 0.08-0.12 0.1-0.15 0.13-0.17 0.15-0.28stainless steel and cast steel ferritic / martensitic 680 12 200 60-100 0.05-0.13 0.08-0.15 0.1-0.28 0.13-0.3 0.16-0.35martensitic 820 13 240 60-100 0.05-0.13 0.08-0.15 0.1-0.28 0.13-0.3 0.16-0.35M stainless steel and cast steel austenitic, duplex 600 14 180 60-100 0.05-0.12 0.05-0.12 0.08-0.25 0.1-0.28 0.15-0.33Kgray cast iron (GG) ferritic / pearlitic 15 180 80-100 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3pearlitic / martensitic 16 260 80-100 0.05-0.13 0.08-0.15 0.1-0.17 0.13-0.2 0.16-0.3nodular cast iron (GGG) ferritic 17 160 60-100 0.05-0.13 0.06-0.13 0.08-0.18 0.1-0.2 0.15-0.25pearlitic 18 250 60-100 0.05-0.13 0.06-0.13 0.08-0.18 0.1-0.2 0.15-0.25malleable cast iron ferritic 19 130 50-100 0.05-0.13 0.06-0.13 0.08-0.18 0.1-0.2 0.15-0.25pearlitic 20 230 50-100 0.05-0.13 0.06-0.13 0.08-0.18 0.1-0.2 0.15-0.25Naluminum-wrought alloys not hardenable 21 60 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3hardenable 22 100 65-100 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3aluminumcast alloys%u226412% Si not hardenable 23 75 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3hardenable 24 90 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3>12% Si high temperature 25 130 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3copper alloys>1% Pb free cutting 26 110 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3brass 27 90 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3electrolytic copper 28 100 65-130 0.05-0.13 0.08-0.15 0.1-0.2 0.15-0.25 0.16-0.3non metallic duroplastics, fiber plastics 29hard rubber 30Shigh temperature alloysFe based annealed 31 200 10-50 0.05-0.12 0.06-0.12 0.08-0.15 0.12-0.18 0.15-0.25hardened 32 280 10-50 0.05-0.12 0.06-0.12 0.08-0.15 0.12-0.18 0.15-0.25Ni or Co basedannealed 33 250 10-50 0.05-0.12 0.06-0.12 0.08-0.15 0.12-0.18 0.15-0.25hardened 34 350 10-50 0.05-0.12 0.06-0.12 0.08-0.15 0.12-0.18 0.15-0.25cast 35 320 10-50 0.05-0.12 0.06-0.12 0.08-0.15 0.12-0.18 0.15-0.25titanium alloys pure 400 36 30-50 0.05-0.1 0.05-0.1 0.08-0.12 0.1-0.15 0.12-02alpha+beta alloys, hardened 1050 37 30-50 0.05-0.1 0.05-0.1 0.08-0.12 0.1-0.15 0.12-0.2Hhardened steel hardened 38hardened 39chilled cast iron cast 40 400cast iron hardened 41 (1) For material groups see pages 495-524