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Forze di taglio KM

Forze di taglio, coppia e potenza per applicazioni di tornitura

These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.

Conversion of Workpiece Material Rockwell (Optional)
Metric
Inch

Conversion of Workpiece Material Rockwell (Optional)

Skip this step if you already know the Brinell hardness number(HB)
in mm
in mm
Characteristics of Workpiece Materials

Characteristics of Workpiece Materials

in mm
HB
"p" Values (hp/ln.3/min ) for machining conditions.
Workpiece "p" Values (hp/in.3/min) for machining conditions: "p" Values (kW/cm3/min) for machining conditions:
Type of material Designation Brinell Hardness Finishing calculator.Roughing.labe General Finishing calculator.Roughing.labe General
Carbon steel AISI 1018 125-175 0.70 0.66 0.62 0.0319 0.0301 0.0282
Carbon steel AISI 1045 175-225 0.74 0.70 0.72 0.0337 0.0319 0.0328
Alloy steel AISI 4140 175-225 0.79 0.74 0.73 0.0360 0.0337 0.0333
Alloy steel AISI 4340 200-225 0.76 0.72 0.73 0.0346 0.0328 0.0333
Alloy steel AISI 4140 225-275 0.85 0.77 0.79 0.0387 0.0351 0.0360
Alloy steel AISI 4142 225-275 0.84 0.77 0.75 0.0383 0.0351 0.0342
Alloy steel AISI 4340 450-500 1.31 1.00 1.05 0.0597 0.0456 0.0478
Tool steel AISI H11 200-225 0.78 0.73 0.76 0.0355 0.0333 0.0346
AISI 316L 125-150 0.81 0.71 0.73 0.0369 0.0323 0.0333
AISI 410 200-250 0.83 0.73 0.75 0.0378 0.0333 0.0342
AISI 17-4 PH 275-325 0.99 0.76 0.80 0.0451 0.0346 0.0364
Gray cast iron SAE G3000 180-200 0.53 0.48 0.47 0.0241 0.0219 0.0214
Ductile cast iron ASTM 65-45-12 150-175 0.58 0.55 0.51 0.0264 0.0251 0.0232
Titanium alloy AMS Ti-6Al-4V 275-300 0.64 0.62 0.62 0.0292 0.0282 0.0282
Nickel alloy Inconel 718 275-300 1.20 1.01 1.02 0.0547 0.0460 0.0465
Aluminum alloy AMS 2024 120-140 (500 Kg load) 0.31 0.29 0.30 0.0141 0.0132 0.0137
hp/ln.3/min. kW/cm3/min
Machining Conditions

Machining Conditions

in mm
in mm
ipr. mm/rev
sfm. m/min
Type of Drive Ef, %
Direct Drive 95
Direct Belt Drive 90
Back Gear Drive 75
Geared Head Drive 70-80
Oil - Hydraulic Drive 60-90
Calculated Machining Conditions

Calculated Machining Conditions

rpm 1/min
ln.3/min. cm3/min
min
Safe Operating Conditions

Safe Operating Conditions

lbf N
ft-lbs. N-m
ft-lbs. N-m
Cutting Forces

Cutting Forces

lb should not exceed Ft max N
lb N
lb N
lb N
ft. lbs. should not exceed Tp N-m
ft. lbs. N-m
hp KW
hp KW
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