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USER GUIDE
      SOLID CARBIDE DRILLS



         Recommended Machining Conditions for Solid Carbide Drills D=3.0-20.0 mm
                                          Tensile                 Cutting       Feed (mm/rev) vs. Drill Diameter
                  Material      Condition  Strength   Hardness  Material   Speed Vc
           ISO                           [N/mm ]   HB      No. (1)  m/min  Ø3-5   Ø5.1-8  Ø8.1-12  Ø12.1-16 Ø16.1-20
                                              2
                      < 0.25 %C  Annealed  420     125      1     80-120  0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40
                      >= 0.25 %C  Annealed  650    190      2     80-110  0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40
            Non-alloy           Quenched
            steel and   < 0.55 %C  and     850     250      3     70-100
            cast steel,         tempered
            free cutting  >= 0.55 %C  Annealed  750  220    4            0.10-0.20 0.15-0.28 0.2-0.35 0.20-0.38 0.25-0.42
            steel               Quenched
                                  and      1000    300      5
                                tempered
                                Annealed   600     200      6
          P Low alloy and cast             930     275      7     70-90  0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40
            steel (less than 5% of   Quenched   1000  300   8     60-80  0.10-0.18 0.15-0.25 0.2-0.30 0.20-0.35 0.25-0.40
                                  and
            alloying elements)
                                tempered   1200    350      9     50-70  0.10-0.20 0.15-0.28 0.2-0.35 0.20-0.38 0.25-0.42
                                Annealed   680     200      10    60-80  0.10-0.20 0.15-0.28 0.18-0.35 0.20-0.38 0.25-0.42
             High alloyed steel, cast   Quenched
             steel and tool steel  and     1100    325      11    50-70  0.10-0.15 0.12-0.20 0.14-0.25 0.16-0.30 0.18-0.32
                                tempered
                                 Ferritic/
             Stainless steel    martensitic  680   200      12    25-75  0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20
             and cast steel
                                Martensitic  820   240      13    25-75  0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20
          M Stainless steel     Austenitic  600    180      14    25-75  0.04-0.10 0.05-0.15 0.05-0.18 0.08-0.20 0.10-0.20
                                 Ferritic/         180      15    85-105  0.15-0.25 0.20-0.35 0.25-0.45 0.30-0.50 0.35-0.55
            Grey cast iron (GG)   pearlitic
                                 Pearlitic         260      16    75-90  0.15-0.25 0.20-0.35 0.25-0.45 0.30-0.50 0.35-0.55
          K                      Ferritic          160      17
            Nodular cast iron (GGG)
                                 Pearlitic         250      18    65-80  0.12-0.20 0.15-0.25 0.20-0.35 0.25-0.40 0.30-0.45
                                 Ferritic          130      19
            Malleable cast iron
                                 Pearlitic         230      20
                               Not cureable         60      21    70-300
            Aluminum- wrought alloy                                      0.10-0.25 0.15-0.35 0.25-0.45 0.30-0.50 0.35-0.55
                                 Cured             100      22    70-200
                      <=12% Si  Not cureable        75      23    70-300  0.07-0.18 0.12-0.25 0.20-0.35 0.25-0.45 0.30-0.50
            Aluminum-            Cured              90      24
            cast,
            alloyed   >12% Si     High             130      25
                               temperature
          N           >1% Pb   Free cutting        110      26
            Copper               Brass              90      27
            alloys              Electrolitic
                                 copper            100      28
                               Duroplastics,                29
            Non-metallic       fiber plastics
                               Hard rubber                  30
                      Fe based  Annealed           200      31
                                 Cured             280      32
            High temp.          Annealed           250      33
            alloys    Ni or Co
          S           based      Cured             350      34
                                  Cast             320      35
                                          RM 400            36
            Titanium Ti alloys  Alpha+beta
                               alloys cured  RM 1050        37    15-35  0.02-0.07 0.04-0.10 0.06-0.12 0.08-0.15 0.08-0.18
                                Hardened          55 HRC    38    40-70  0.06-0.10 0.08-0.12 0.10-0.14 0.12-0.16 0.14-0.18
            Hardened steel
          H                     Hardened          60 HRC    39
            Chilled cast iron     Cast             400      40
            Cast iron           Hardened          55 HRC    41
          As a starting value, the middle of the recommended machining range should be used, then (according to wear results),
          conditions can be changed in order to optimize performance.
          •  When using external coolant supply only, reduce cutting speed by 10%
          •  Use internal coolant supply when machining austenitic stainless steel
          (1)   For workpiece materials list, see pages 495-524





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