PP60C Poor performance with CNC cutting--- Duty Cycle issues???

[Tacoma747]

Doesn't make much sense to advertise it will cut 1", sell it with a CNC torch, suggest it not be used with handheld torches, then say it can only cut 7/16" when used with CNC.

Best I have found, there is only one size available on the nozzles for the A81 torch head.

I backed it down to 45 and it still shut down, I can also only assume the voltage going in is 220V??? There isn't any way to adjust voltage on it is there? Not sure what you mean when you say it should be less than 98 volts.

Lastly, it is kind of hard to give it a break when it won't cut ONE part without messing up, I can't start/stop it mid cycle and have anything turn out well...

[zoama]

Not sure what you mean when you say it should be less than 98 volts.

That's output not input.

[performance]

There's also air pressure involved. Torch height etc. If you read the specs, it is pretty clear how it is rated. We break it down in CNC use, and Hand held use. We're no different than anyone else on that. You can purchase a hand held torch for the unit. There are smaller consumables available for the torch. The voltage is the cutting voltage of the arc. If your voltage is running higher than 98 volts then duty cycle will be reduced. You are cutting with a combination of both amps and voltage, so both are a factor in duty cycle, though it's rarely discussed. There are other things that affect duty cycle as well, including air space around the welder, humidity, and localized air temperature.

As you compared units to the Hypertherm earlier...The Hypertherm PM45 only is 100% duty cycle at 32 amps...but it is still rated higher for CNC cutting at max amps with only 50% duty.

[performance]

Ok,
I've cut and pasted some info here for you, and it has the numbers of the 1.0 torch nozzle. You can get them from trafimet, or river-weld, if you like.