I am having a bit of trouble cutting 1/4" mild steel plate on a plasmacam table . This is what I have:
Miller ICE-40
Power: 40 amps
Speed: 40ipm
Cut height: .08"
Pierce height: .11"
Pierce time: 1.2 (sec)
DHC - ON
What is happening is that it will cut perfectly part of the way then it will start not pushing through the plate. It is piercing just fine and I have the time turned down to what I feel is the minimum pierce time.
I have tried speeding up and slowing down the cut speed but it is no help.
I have a water collector at the air compressor and one at the plasma cutter.
What seems to be happening is when it starts not pushing through the plate is that the DHC starts lifting the torch. Any idea what to look at next to get the problem corrected?