[Simonh1959]

Has anyone any expirience with using Nitrogen for cutting stainless steel on a Powermax 105?
I have just changed from a TD A120 Cutmaster on my Blue Marlin to the PM 105. Previously with the TD I had used Nitrogen to cut up to 4mm s/s @ 40 amps with quite good results but the TD rep told me that 40 amps was the maximum otherwise the electrode would melt.
I now have some 15 thick s/s to cut with my new Powermax 105 and I see from the manual that I would need to use 85 amps for any piercing.
I could of course just use compressed air but on the thinner materials the Nitrogen gave a much cleaner cut.

[jimcolt]

You can use nitrogen at any power level with the Powermax105. My experence shows a better cut with air in terms of edge angularity and dross....the nitrogen may provide a slightly less oxidized surface. If you have a water table....raise the water to about 6mm above the plate surface and use nitrogen for the best edge on stainless.

N2 on steel will not provide good results. Air and N2 are the only gases approved for use in the Powermax systems.

Jim Colt Hypertherm

Has anyone any expirience with using Nitrogen for cutting stainless steel on a Powermax 105?
I have just changed from a TD A120 Cutmaster on my Blue Marlin to the PM 105. Previously with the TD I had used Nitrogen to cut up to 4mm s/s @ 40 amps with quite good results but the TD rep told me that 40 amps was the maximum otherwise the electrode would melt.
I now have some 15 thick s/s to cut with my new Powermax 105 and I see from the manual that I would need to use 85 amps for any piercing.
I could of course just use compressed air but on the thinner materials the Nitrogen gave a much cleaner cut.