High Speed Machining of Inconel 718

[whirly_gig]

Anyone have machining parameters for high speed machining of Inconel 718? Currently using TiAlN coated 1/2" ball endmills on a CNC machining center.

[jctjct]

I don't think I've ever seen high speed and Inconel in the same sentence before.

[Keith Graydon]

quote:

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I don't think I've ever seen high speed and Inconel in the same sentence before.

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Hahahah that was a good one!

Im thinking the same thing.

 

-Keith

[mayday]

jctjct, I see your from Ithaca NY

Have you seen a Drunken Bird flying into picture windows around your area? some say its a Stork but my guess is, its a big Sea Chicken

[CAM-mando]

Saw these recently. Havent tried them but take a look at the "MA" Series.

 

http://www.dataflute.com/docs/dfad0105.pdf

[Lumpnut]

LOL Mayday!!!

 

whirly_gig ,

You'd be lookin at 764 rpm @ 3.6 ipm for starters with that material. Not exactly highspeed ,....... well maybe for a drunken sea chicken.

[mayday]

good one NUNU,

a real beak breaker

[jctjct]

I see that bird brain everyday.

[Storkman]

Oh, so that's the way it's gonna be. Ganging up on me. I almost liked Nunu too. Hangin with Mayday can only get you in trouble and intoxicated.

[Metal Flake (clocked in)]

We run a 718 Inconel job faster than I've seen anywhere.

 

Here's the recipe:

1) 1.25dia X 3flt Kennemetal Facemill (.25rad inserts)

2)Kennematal ceramic inserts: KIPR125RP43540

3)4584 RPM and 41.25 IPM.

4).100" axial cut

5)Full dia cut

6)Run dry!

 

Oh yes..

 

7)50 taper horizontal mill.

 

You will see the prettiest color of orange-red chips spewing off the cutter. The work doesn't get hot and you get great cutter life.

 

 

HTH

 

Dan

[medaq]

If you mean 1/2" em at 5 ipm then you will have your high speed machining

 

jim

[Guest CNC Apps Guy 1]

"High Speed" is a relative term. Relative to the material you are cutting. So, for stInconel Dan's parameters are HSM of Inconel.

[Storkman]

Ceramics are the cat's butt for tough material, if you have the right setup. Rigid!!! Tried them on jethete job we had, no luck, to much vibration. But we were on centers. need a vise or something strong. Any vibration causes inserts to crack. If you have the right setup you can fly in incolnel, I think James stated in a previous post 800 sfm.

[whirly_gig]

Thanks for the help. I realise I might have thrown a curve when I added the phrase "High Speed" but I believe James hit the nail on the head. ("Relative to the Material")

 

Thanks again

[Mct010]

I remember cutting alot of inconel,(don't remember the Grade) 600-900 maybe, anyways...

some was inlay in submersibles, dragster valves and stub acmi threads.

 

One thing I learned doing it manualy was to run the correct sfm and heavy feed, cuts great that way. and thats with no coolant.

 

Mike