Turning Monel

[Thee Dragracer1951]

Any one have a good source for Ceramic inserts for turning Monel?

I have a part 11 inches long. 4.0-16 threads for 7.75 inches

Also has a 3.7 bore through.

There are a couple of threaded cross holes.

I was looking at the machinerys handbook, carbide is 15 sfm. Ceramics are much better.

But how do you thread the cross holes? Do you send the part out to have the four inch threads ground?

Looking for some tooling sugestions

Thanks

[calnet42]

Becker diamond in Germany makes CBN threading inserts.

[chris m]

Kyocera has a lot of ceramics and good technical suppport; they're all we use for ceramic cutting tools. I have no machining experience with Monel, but I know that forming it sux.

[ocho]

Turning and threading some Monel K500 and Inconel 725 at the moment using iscar CNMG Grade IC907 at 40m/min @ .2 mm/rev also threading using Iscar IC908 @20m/min no problems at all Monel is easy to cut,but is in the same material group.

[X-L Engineering Corp]

whats the biggest difference between K400 to K500?