ESAB Powercut 650, Instruction Manual, Page: 18 / 56

18
WHEN THE ARC BREAKS
THROUGH THE WORK, BRING THE
TORCH TO AN UPRIGHT POSI-
TION AND PROCEED TO CUT.
TO START A PIERCE, TILT THE TORCH
TO PREVENT MOLTEN MATERIAL FROM
COMING BACK AGAINST AND DAMAG-
ING THE TORCH.
1
2
figure 4.3. piercing technique using the pt-31xlpc
cutting speed range — powercut 650
(using air with xt consumables 40 a @ 75 psi)
nozzle - p/n 20860, electrode - p/n 20862
With 1/16" standoff (tip to Work Distance)
Cutting
Thickness Speed
Material (In.) (ipm)
Carbon 1/16 330
Steel 1/8 105
(AISI 1020) 1/4 53
3/8 22
1/2 12
5/8 8
3/4 4
Stainless 1/16 320
Steel 1/8 90
(AISI 304) 1/4 40
3/8 20
1/2 12
5/8 8
3/4 3
Aluminum 1/16 450
(6061) 1/8 200
1/4 70
3/8 30
1/2 14
5/8 11
3/4 8
NOTE: The speeds given here are typical for best quality
cuts. Your actual speeds may vary depending
on material composition, surface condition,
operator technique, etc. If cutting speed is too
fast, you may lose the cut. With slower speeds
excessive dross may accumulate. If speed is too
slow, the arc may extinguish. Air cutting typically
produces a rough face on stainless steel and
aluminum.
NOTE: Lower the air pressure to 75 psig on materials
< 1/16" or when inconsistent arc starting is
experienced at 80 psig.
section 4 operation