Page 78 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE
INDEXABLE DRILLS ISO Material Condition Strength Hardness HB Material No. (1) Speed Vc f 26< ØD <28 f Feed vs. Drill Diameter F [mm/rev] f 44< ØD <50 f

Recommended Machining Conditions for MNC drills

29< ØD <32
33< ØD <35
36< ØD <43
Cutting
[m/min]
Tensile
f
f
f
f
f
f
Vc Vc
min max min max min max min max min max min max
[N/mm ]
2
Annealed
190
Annealed
650
≥ 0.25 %C
Quenched
Non-alloy steel
850
< 0.55 %C
250
and cast steel,
free cutting steel < 0.25 %C and tempered 420 125 1 2 3 4 120 200 0.25 0.35 0.25 0.35 0.25 0.40 0.25 0.40 0.28 0.45
Annealed
130 190
220
750
≥ 0.55 %C Quenched
and tempered 1000 300 5
Annealed 600 200 6
P Low alloy and cast steel (less 930 275 7
than 5% of alloying elements) Quenched 1000 300 8 120 180 0.25 0.33 0.25 0.33 0.25 0.38 0.25 0.38 0.26 0.43
and tempered
1200 350 9
Annealed 680 200 10
High alloyed steel, cast 100 160 0.25 0.33 0.25 0.33 0.25 0.36 0.25 0.36 0.26 0.41
steel and tool steel Quenched 1100 325 11
and tempered
Ferritic/ 680 200 12
Stainless steel and cast steel martensitic 90 140 0.12 0.24 0.12 0.24 0.16 0.25 0.18 0.25 0.18 0.30
Martensitic 820 240 13
Austenitic,
M Stainless steel and cast steel 600 180 14 90 140 0.12 0.24 0.12 0.24 0.16 0.25 0.18 0.25 0.18 0.30
duplex
Ferritic / 180 15
pearlitic
Gray cast iron (GG)
Pearlitic /
martensitic 260 16
K Ferritic 160 17 150 250 0.25 0.40 0.25 0.45 0.3 0.50 0.3 0.50 0.35 0.55
Nodular cast iron (GGG)
Pearlitic 250 18
Ferritic 130 19
Malleable cast iron
Pearlitic 230 20
Not 60 21
Aluminum-wrought alloys hardenable
Hardenable 100 22 160 260 0.3 0.50 0.3 0.50 0.35 0.55 0.35 0.55 0.4 0.60
Not
≤12% Si hardenable 75 23
Aluminum- Hardenable 90 24
cast alloys
>12% Si High 130 25
N temperature
>1% Pb Free cutting 110 26
Brass 90 27
Copper alloys
Electrolytic
copper 100 28
Duroplastics, 29
Non metallic fiber plastics
Hard rubber 30
Annealed 200 31
Fe based Hardened 280 32
High temperature Annealed 250 33
alloys Ni or Co
based Hardened 350 34
S Cast 320 35
Pure 400 36
Alpha+beta
Titanium alloys
alloys, 1050 37
hardened
Hardened 55 HRC 38 20 50 0.1 0.16 0.12 0.18 0.14 0.2 0.14 0.2 0.16 0.22
Hardened steel Hardened 60 HRC 39
H
Chilled cast iron Cast 400 40
Cast iron Hardened 55 HRC 41
(1) For workpiece materials list, see pages 495-524 . As a starting value, the middle of the recommended machining range should be used.
Then, according to the wear results, conditions can be changed to optimize performance.
76 ISCAR