Longevity FORCECUT 50D - Manual (Page 26)

ForceCut 40D and 50D plasma cutters
Page 25 of 30
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metals respond differently than others. For example the faster you move on a
material such as aluminum, the cleaner your cut will be. Conversely, when
using your LONGEVITY Plasma Cutter to cut thicker material, set your unit to
full output and vary your travel speed accordingly. Thin material requires you
to turn down the amperage and change to a lower-amperage to achieve a
narrow kerf.
Figuring out if you are going too slow or too fast can be a daunting task that
really only comes with time and experience. However, our guys in the
LONGEVITY Facility Testing Team have a few pointers for you:
If your cut has a lot of spray back then you are probably going
too fast.
If the arc exits the material going straight down then you are
probably moving too slow and you will have an unnecessary
buildup of "dross" or "slag."
Your arc should be exiting the material at a 15 - 20 degree angle,
but opposite the direction of your cut path.
Using A Cutting Guide
First thing in using a torch guide with your LONGEVITY Plasma Cutter is
make sure it isn't flammable! Aluminum works as a great torch guide, but be
sure it is attached to the torch cup and not the torch tip. Aluminum is a great
contact guide because of its smooth surface but beware of the torch tip because
of electrical conductivity of aluminum. It would be a terrible mess of a cut,
loss of consumables, and overall depressing mistake if your torch guide melted
to the torch tip or the project at hand. Next you want to mark the material to be
cut with either white chalk or a black marker. If you are unsure of how steady
your hands are, we recommend you try using a straight edge clamp attached to
the work piece or torch guide.
All articles are composed by the LONGEVITY Facility Testing Team and are
written with expressed interest of maintain a strong standard in LONGEVITY
Global Inc. quality, to help address topics, and answer questions for amateur
and experienced users alike. Please remember to always exercise extreme
causation and abide by all provided safety specification.