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Input the values.
Pc (kW) : Actual Cutting Power
ap (mm) : Depth of Cut
f (mm/rev) : Feed per Revolution
vc (m/min) : Cutting Speed
Kc (MPa) : Specific Cutting Force
n: (Machine Coefficient)
What is the cutting power required for machining mild steel at cutting speed 120m/min with depth of cut 3mm and feed 0.2mm/rev (Machine coefficient 80%) ?
Substitute the specific cutting force Kc=3100MPa into the formula.
Pc=(3×0.2×120×3100)÷(60×103×0.8)=4.65(kW)
Work Material | Tensile Strength(MPa) and Hardness |
Specific Cutting Force Kc(MPa) | ||||
---|---|---|---|---|---|---|
0.1 (mm/rev) |
0.2 (mm/rev) |
0.3 (mm/rev) |
0.4 (mm/rev) |
0.6 (mm/rev) |
||
Mild Steel | 520 | 3610 | 3100 | 2720 | 2500 | 2280 |
Medium Steel | 620 | 3080 | 2700 | 2570 | 2450 | 2300 |
Hard Steel | 720 | 4050 | 3600 | 3250 | 2950 | 2640 |
Tool Steel | 670 | 3040 | 2800 | 2630 | 2500 | 2400 |
Tool Steel | 770 | 3150 | 2850 | 2620 | 2450 | 2340 |
Chrome Manganese Steel | 770 | 3830 | 3250 | 2900 | 2650 | 2400 |
Chrome Manganese Steel | 630 | 4510 | 3900 | 3240 | 2900 | 2630 |
Chrome Molybdenum Steel | 730 | 4500 | 3900 | 3400 | 3150 | 2850 |
Chrome Molybdenum Steel | 600 | 3610 | 3200 | 2880 | 2700 | 2500 |
Nickel Chrome Molybdenum Steel | 900 | 3070 | 2650 | 2350 | 2200 | 1980 |
Nickel Chrome Molybdenum Steel | 352HB | 3310 | 2900 | 2580 | 2400 | 2200 |
Hard Cast Iron | 46HRC | 3190 | 2800 | 2600 | 2450 | 2270 |
Meehanite Cast Iron | 360 | 2300 | 1930 | 1730 | 1600 | 1450 |
Grey Cast Iron | 200HB | 2110 | 1800 | 1600 | 1400 | 1330 |
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