Process Conditions
Shown are the suggested ranges for cutting speeds and feed rates using high speed tool steel under dry cutting conditions at a 0.015 in. depth of cut. Generally cutting speeds are lower for hard materials, higher for soft materials. Both cutting speeds and feed rates can be substantially increased when coolants are used and carbide tooling is substituted for steel tooling. Typical Speeds and Feeds
| Workpiece Material | Hardness (Hardness Brinell scale) | Cutting Speed (sfpm) | Feed Rate (ipt) |
|---|---|---|---|
| Aluminum | 70 to 125 | 300 to 500 | 0.006 to 0.010 |
| Brass | 60 to 100 | 110 to 275 | 0.007 to 0.009 |
| Cast Iron | 250 to 320 | 30 to 55 | 0.005 to 0.006 |
| Mild Steel | 275 to 325 | 60 to 80 | 0.006 |
| Stainless Steel | 275 to 325 | 40 to 55 | 0.006 |
| Plastics | ... | 150 to 350 | 0.006 |
Read more about this topic: Arbor Milling
Famous quotes containing the words process and/or conditions:
“It haunts me, the passage of time. I think time is a merciless thing. I think life is a process of burning oneself out and time is the fire that burns you. But I think the spirit of man is a good adversary.”
—Tennessee Williams (1914–1983)
“We have got onto slippery ice where there is no friction and so in a certain sense the conditions are ideal, but also, just because of that, we are unable to walk. We want to walk so we need friction. Back to the rough ground!”
—Ludwig Wittgenstein (1889–1951)