snippycarpenter
Plastic
- Joined
- Jun 14, 2017
I have had the privilege of turning CPM 15V on a semi regular basis now and i was wondering if anyone out there has any tips or tricks they may help keep a good surface finish on this tough steel. The parts i turn are for tool and die so you can see why they need a good surface finish after i am done turning it. I believe full hard RC is 62-64 I use a romay corp .03125 and .016 nose radius ceramic insert cutting with a feed rate of .0033 a CSS of 450 and a max rpm around 625. Now i know depth of cut especially with CPM 15V can be a cause of a "file finish". but what am i supposed to do when the boss wants me to take .001" off a punch of CPM 15V while maintaing a perfect finish. Is there anyone out there has been dealing with the same issues. i almost forgot to im not able to spin it a whole lot faster as i turn using a magnetic chuck.