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How to find plasma cutting flow rate?

How to find plasma cutting flow rate?

How to find plasma cutting flow rate?

(OP)
Dear all,

please help me in here. This is for estimation purpose.
we need to cut 22mm thick SS304L plates using plasma.

1. Which gases should we consider for Plasma cutting (Start gas/Cut gas & Shield gas) ?
2. If it is Oxygen & Air (or whatever), how to find the consumption of the gases (flow rate)? In the manufacturers manual, This flow rate is given as below; (for CS cutting 3/4" thick)



PLASMA GAS:Oxygen @ 125 PSI
START GAS:Nitrogen @ 125 PSI
SHIELD GAS:AIR @ 80 PSI
FEED RATE:74 ipm
KERF WIDTH:.185 inch
STANDOFF:145
INITIAL HEIGHT:76
START GAS FLOW: 28.6 (4.4 flow)
CUT GAS FLOW:60.0 (5.1 flow/50 PSI cutting)
START SHIELD GAS:45(7.5 PSI while cutting)
SHIELD GAS:45(7.5 PSI while cutting
)
REMOTE CURRENT:250
PLASMA RISE ON PIERCE:.3
PLASMA PIERCE TIME:.2
PLASMA TRAVEL DELAY:.1

Please see the highlighted area. There they have mentioned the flow rate. But No unit. what is this 26.6 ? and what is 4.4?
in the cut gas flow, what is referred to as "60.0 (5.1 flow/50 PSI cutting)"??


Please explain this. Anybody have oxygen flow rate per minute or per meter?

Thank You,

Gregorydas

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