sudtechcnc
Cast Iron
- Joined
- Mar 13, 2007
- Location
- chennai ,south india
Hello
We are tapping M4 X 0.7 in SS 316L .depth of thread = 6mm ( drill hole depth =8 mm blind)
machine -VF4 , water soluble coolant (castrol 'cooledge') @ 5 % concentration,
spindle rpm 50 , drilled hole 3.5 mm ( *) , tap used = 'Totem' (sppt 4 flute)
we are getting a high rate of tap breakage- ( 80 holes only).
Can somebody suggest a better tool / cutting parameter / etc to increase tool life...
Thanks
sudtechcnc
We are tapping M4 X 0.7 in SS 316L .depth of thread = 6mm ( drill hole depth =8 mm blind)
machine -VF4 , water soluble coolant (castrol 'cooledge') @ 5 % concentration,
spindle rpm 50 , drilled hole 3.5 mm ( *) , tap used = 'Totem' (sppt 4 flute)
we are getting a high rate of tap breakage- ( 80 holes only).
Can somebody suggest a better tool / cutting parameter / etc to increase tool life...
Thanks
sudtechcnc
