Drilling into type 321ss
Drilling into type 321ss
(OP)
Need info on drill type, speed, pilot size drill for a 3/4 in. Hole drilled through a flange at 90 deg. To flange face for a pressure tap. Thickness of flange is 6 in. Concern about chips and wear on drill. Also suggest coolant type and rate.





RE: Drilling into type 321ss
Mike Halloran
Pembroke Pines, FL, USA
RE: Drilling into type 321ss
RE: Drilling into type 321ss
Drill Kennametal Dynapoint with thru coolant. Kennametal Catalog # K210A07500HP
Speed / Feed 270 SFM and .010 IPR
This Sir is all you will need for tooling. Do not spot drill for the hole just drill it.