I am cutting 1/4 inch hot rolled steel, not using the THC just IHS running a hypertherm 45Xp with machine torch at 45 amps and 40 ipm .5 piece delay .15 pierce height and .060 cut height. While cutting I notice dose building around nozzle is this normal or what can I do to correct it
Pictures?
I have a 45XP, although I haven’t used it at all for 1/4" steel.
However, I did run a PrimeWeld CUT60 and cut a lot of 1/4" steel and my old charts have me running as much as 55-60ipm and between 42 to 45 amps.
Based on that information alone, for a weaker plasma cutter, I’d expect to cut 1/4" at an even faster pace.
Is 40ipm the book setting?
The book chart says 44 ipm
Will take some pictures tomorrow am and post them here
Water tables run a little slower - IIRC 35ipm @ 45a worked OK for me. Slow down to 27ipm if there is a concern for taper.
Stop mid cut on a test run and measure with feeler gauges to verify your actual cut height!!!
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