Drilling Titanium 6AL-4V

[DANIEL HALL]

I need some advice on drilling on a cnc mill a small hole ( .065 inches) to a 1 inch deep
Feed, Speed,peck and also recomended drill stile .
thanks

[widgitmaster]

It was my experience to use Cobolt drills instead of Carbide, because Cobolt dulls and Carbide cracks! HSS is totally usless in Titanium!

If the part is NOt going into outer space, use the thick brown sulfer based cutting oils, they can not be use on titanium in space because the Chlorene causes a serious reaction in a zero oxigen atmosphere. But it is the bes oil for cutting Titanium!
Eric

[Zumba]

Great tip, Eric. I almost made the mistake of using my Mobil Gamma cutting fluid on Ti, but luckily I saw your post before doing it! I'm currently building a fleet of spaceships.

[DANIEL HALL]

Thanks Eric for the tips, i was playing and i found that the best feed and speed for this particular job on a regular cobolt drill is .
800 rpm (15 spm) , .5 ipm (.0007 ipr) and .025 peck .

I have not idea on the use for this part so i stay on coolant
Daniel