Hi All, Has anyone machined this before? We're quoting an impeller made of this stuff and are not looking forward to turning/milling it. We're thinking ceramics for turning and since all the milling tools will be .25" or less it looks like solid carbide. Any thoughts? Chemical Composition Chemical Composition (% by wt.) C Max: 0.06-0.09 Cr: 8.0-8.5 Ni: BAL (67% ish) Mn: 0.10 Si: 0.25 Other: W (Tungston) 9.3-9.7; Co 9.0-9.5; Al 5.4-5.7 + Ta, Ti, Hf Thanks for your help! Craig

It's due to the kinematic motion of the machine, a 5-axis point to point move won't necessarily result in a straight line move. Camplete Truepath is great at showing all of the kinematic motion of the machines. I assume vericut and predator would show it as well. Hope that helps.

I believe the advanced 5-axis stuff is from Module Works. Not sure about the other 5-axis paths.

We run around 90 SFM carbide tooling with oil based coolant. Keep tools sharp it work hardens in no time.

That would make sense, the cusomter told us it was an Inconel casting but the material on the print says IN-100. Thanks for the info, looks like it'll be a lot of tools and time. Is the Pratt book available online? It seems like whenever there is a materials question the Pratt book saves the day. Thanks for your help!

Actually all the blades are already attached to the hub. It's a one piece turbine, about 11" in Dia. We have had some luck with the Stabilizers in different materials so we'll probably give those a go the first time around.

Thanks for all of the info guys. Am I right in assuming that you can only rough with ceramics and not finish because of the high heat? We haven't really used ceramics milling or turning but if we get more of this Inco 100 it looks like we won't have a choice. Thank you to everyone for their suggestions.

Thank you all for your suggestions, I'll be giving them a go on Friday when the job hits the mill. I'll be sure to post what results I get with any tools we try.

Hi Slick, We do not have Volumill, but thanks for the advice. We've been working with a few tooling reps and not many people seem to have cut this stuff. Most people are saying try this and good luck haha. The part is a turbine blisk for the hot section of an engine so it's mostly 5-axis simultaneous (sp?) machining. Turning it has been bad enough, I'm almost scared to see what milling it will be like.

Hi All We're machining (or trying to) some Inconel 100. Does anyone have any hints/tips? From what we've learned so far we have to turn it at about half of what we would run inco718. We're running the inco 100 at 55sfm .009/rev .07 doc. Using Sandvik button tools H13A grade. We've tried a bunch of other Sandvik and Iscar stuff and nothing is helping. I was hoping that we could go faster but it may just be the nature of the beast. Any help or advice would be greatly appreciated. TIA, Craig

We use Camplete for all of our posting to our 5-axis machines. V4 has some pretty good enhancements and is worth using. JM2C

Ask away. We don't have any 2500 but we have 3 NL-3000 machines and love them. Very rigid and repeatable, accurate and precise. One is just a two axis lathe, another has live tooling, and the last has live tooling with Y-axis as well. The Chip Blaster HPC pump that you can get will make loads of difference in drilling, turning, boring, or basically anything that you do.

Thanks for the help MLS. I'll give the surface finish project a go and see what that gives me.

The red surface is the one that I'm cutting while the grey ones are the walls. On another note thanks to everyone who has posted before. There is a TON of great information on here! TIA, Craig

The containment curve is large enough. Here's an attempt at posting a screen shot I'm also using X4. If I use a surface finish shallow or a scallop toolpath with the same geometry it works out fine. I just like the pattern better of the parallel/raster pattern