Feeds & speeds Question

[Janos]

Hey all, I have a question for you. We have a piece of 316 stainless that has to go on a BIG diet, Sooo we have decided to put the shell mill on the job. But...... I would like to get a good starting point with the speeds and feeds. We typically run a TON of aluminum so this stuff is a bit new to me.

Thanks Janos

[cutting edge]

A little more info would help. What diameter face mill? How many inserts? What size machine?

[Janos]

Ooops, sorry!! Had a very long day and I wanted to end it.

3" Valenite sheer mill ( I will have to get back with you on the inserts. )
6 inserts
Haas VF-4 w/ 20 Hp

Right now it has a castrol lube in it fo alum but when we just faced the part the cuttung edges got wiped out.

Thanks janos

[cutting edge]

I run 316L alot. I run a 3 inch face mill(6 inserts) at 250 rpm and 5 ipm on a VF3SS. I'm cutting .213 off a part that is 2.5 inches wide. I take it in two steps of .106 I can cut about 40 parts like that. Obviously you can go a little faster but your tool life will suffer.

I am using RTW inserts. The part number is SEHW43A6. Hope that helps.

[Janos]

Thanks, I appreciate you help!

Janos

[jackson]

This is what my software put out it is pretty accurate you may change a bit as was said for tool life

[djr76]

Might want to run that dry as well. I face mill 304 structural at work and run it dry with good results. The coolant might be shocking it to much, and make sure your using a tough ss grade like vp5135.

[DONNYBRASS]

Originally Posted by jackson This is what my software put out it is pretty accurate you may change a bit as was said for tool life

what type of software is it and whats it called. and were can you get it.

[jackson]

Originally Posted by DONNYBRASS what type of software is it and whats it called. and were can you get it.

http://www.mrainey.freeservers.com/ Here is the site i recommend getting the ME Consultant Pro & ME thread Pal as you will see from the site they are worth the money

[Janos]

Originally Posted by cutting edge I run 316L alot. I run a 3 inch face mill(6 inserts) at 250 rpm and 5 ipm on a VF3SS. I'm cutting .213 off a part that is 2.5 inches wide. I take it in two steps of .106 I can cut about 40 parts like that. Obviously you can go a little faster but your tool life will suffer. I am using RTW inserts. The part number is SEHW43A6. Hope that helps.

The guys I am asking the info for got a .750 valenite indexable shoulder mill and went by what the salesman suggested which was 900 rpm and 15. ipm at .03 deep and quickly dispached a set of inserts. I took your info and adjusted them to the new tool and it seemed to work quite nicely. It was still buzzing along when I left it.

What kind of coolant do you use for it? They bought a Castrol product that is clear. The kind we use at my day job is Basocut Swisslube (I think my spelling is correct) It works great on pretty much everything.

Thanks Janos

[PBMW]

I have a recurring job in 316. Nasty stuff. I have a 2 1/2" face mill with round incerts. SECO REHR 1605M0T m14 T25m. I turn these at 382 rpm and feed it at 6 to 8 ipm. Takes .100 a pass full width. I can buzz along for quote a while before I have to turn the buttons.

[cutting edge]

Originally Posted by Janos The guys I am asking the info for got a .750 valenite indexable shoulder mill and went by what the salesman suggested which was 900 rpm and 15. ipm at .03 deep and quickly dispached a set of inserts. I took your info and adjusted them to the new tool and it seemed to work quite nicely. It was still buzzing along when I left it. What kind of coolant do you use for it? They bought a Castrol product that is clear. The kind we use at my day job is Basocut Swisslube (I think my spelling is correct) It works great on pretty much everything. Thanks Janos

I use Blaser BC40 NF. I am currently running the stainless job that I told you about. I tried something a little different. I was just running a clean up pass on the part and ran the 3 inch face mill at 509 rpm and 18 ipm with a depth of cut about .020. Part is 2.5 wide and 6.25 long. I ran about 60 parts like this before the inserts let go. I haven't tried taking the larger cut yet. Will report back later.

Glad to hear that worked for your friend!