Каталог Iscar вращающийся инструмент 2017 - страница 546

USER GUIDE • DR-DH drills can be used with any type of adaptation. Double-ended Pad However, concentric adapters such as hydraulic chucks Worn support pads provide poor surface finish in are advantageous for better runout. When machining a drilled hole. In this case, pads should be rotated high temperature alloys or applying very high machining or replaced. loads, it is advisable to use strong gripping adapters such as: side lock adapters, power / hydraulic chucks Rotate when wear shows on the back side of the pad • In case of chip formation or chip evacuation problems, the following sequence is recommended: 1. Reduce cutting speed by 10% 2. Increase internal coolant pressure INDEXABLE DRILLS 3. Apply a pecking cycle 4. Interrupted cut will have a direct influence on hole accuracy, quality and drill life. (Sometimes even tool breakage can occur). DR-DH Machining Recommendations Tensile Cutting Strength Hardness Mtl. Speed Feed ISO Material Condition Rm [N/mm2] HB No. vc m/min mm/rev 0.1 - 0.25 %C Annealed 420 125 1 0.10-0.25 100-150 0.25 - 0.25 %C Annealed 650 190 2 0.10-0.25 0.25 - 0.25 %C Non-alloy steel, Quenched and 850 250 3 0.15-0.30 tempered cast steel, free cutting steel 0.55 - 0.80 %C Annealed 750 220 4 0.15-0.30 80-150 0.55 - 0.80 %C Quenched and 1000 300 5 0.15-0.30 tempered P Low alloy steel Annealed 600 200 6 0.15-0.30 and cast steel 930 275 7 0.15-0.30 (less than 5% Quenched and 1000 300 8 70-120 0.15-0.30 alloying tempered elements) 1200 350 9 0.15-0.30 Annealed 680 200 10 80-150 0.10-0.25 High alloy steel, cast steel and Quenched and tool steel 1100 325 11 70-120 0.10-0.25 tempered Ferritic/pearlitic 180 15 0.18-0.35 Grey cast iron (GG) 180-300 Pearlitic 260 16 0.18-0.35 K Ferritic 160 17 0.15-0.30 Nodular cast iron (GGG) Pearlitic 250 18 0.15-0.30 150-250 Ferritic 130 0.15-0.35 Malleable cast 19 iron Pearlitic 230 20 0.15-0.35 542 542 ISCAR ISCAR