Page 187 - Mechanical Engineer's Data Handbook

MANUFACTURING TECHNOLOGY 175
-
700
9 2400 ,t /

e
300
~
200-
100 -
I I I I I I

Force versus feed rate

F, increases linearly with feed rate.
Key:
F, increases in a curve with decreasing rate. 1 HSS
2cer#de
3comnic

Tool We, t (min)

5.2.6 Cutting speeds

Taming cllttiag speeds (mmia-')

Tool material

High-speed Super-high- Tungsten
Material steel speed steel Stellite carbide

Aluminium alloys 70-100 90-120 > 200 > 350
Brass, free cutting 70-100 90-120 170-250 350-500
Bronze 40-70 50-80 70-150 150-250
Grey cast iron 35-50 45-60 60 9CL120
Copper 35-70 50-90 70-150 100-300
Magnesium alloys 85-135 110-150 85-135 85-135
Monel metal 15-20 18-25 25-45 50-80
Mild steel 35-50 45-60 70-120
High tensile steel 5-10 7-12 20-35
Stainless steel 10-15 12-18 30-50 -
Thermosetting plastic 35-50 45-60 70-120 100-200