Need some starting points for turning / drilling copper SFPM? FPR?
TIA Darrell
- posted
16 years ago
question for the gurus-turning copper
Loading thread data ...
- Vote on answer
- posted
16 years ago
snipped-for-privacy@msn.com wrote in news:61c24b3b-2dea-4028-9018-1ba5c92d4e65 @s13g2000prd.googlegroups.com:
What kind of copper?
Depending on the alloy, the machinability ranges from easy to poor.
- Vote on answer
- posted
16 years ago
snipped-for-privacy@msn.com wrote in news:c9f434e3-6e40-4f37-81e9- snipped-for-privacy@i12g2000prf.googlegroups.com:
Ick. Not one of the more machinable grades. 400 SFM is a little bit on the fast side unless you have high pressure coolant. I would run 275 SFM for roughing, 325 for finishing with an uncoated carbide tool. Maybe add
25-50 SFM for a good coated grade.Chips won't break real well either.
I have had good luck drilling with high pressure coolant and straight flute drills.
Are these plasma parts by any chance?
- Vote on answer
- posted
16 years ago
Can't say, customer proprietary, Yup, ickky poo poo, not making chips, mushing them, I will try your #'s tomorrow.
Had to slow the feed down, stuff wants to push real bad, I'd rather cut 316L!
"D"