Plasma Arc Process
In plasma-arc cutting, Plasma is created by
superheating gas in an electric arc
which of the following PPE is considered optional for plasma -arc cutting
A full leather hood
which of the following safety statements related to plasma-arc is true
never carry matches or gas-filled lighters in your pockets.
The most common plasma-arc cutting torch uses
A pilot are with the transferred arc process
Sputtering or hissing of the torch is often caused by
moisture entering the unit through the air line
In most cases, plasma-arc cutting
faster and more efficient that other cutting methods
cutting a 2"(cm) aluminum plate requires a (n)
high cutting amperage
The simplest plasma-arc cutting units use filtered
Compress Air
The typical plasma arc cutting torch contains a
retaining cup, copper electrode with a hafnium or thoriated tungsten insert, gas swirl ring
Dross or carbon deposits left on a surface to welded will combine with the base metal to form
hard, brittle zone and porosity
A jet of plasma
To pierce very thin metal using plasma arc cutting hold the torch at a
0-degree work angle
Industrial plasma cutting units use filtered
3" thick
The most common category in Final Jeopardy
Word Origins
Some heavy duty PAC systems
are water cooled
Manual or mechanized
when gas cylinders are disconnected from a plasma-arc cutting unit before it is stored, be sure to
lay all cylinders down on their side
Some light-duty pas equipment has a built-in
air compressor
The term standoff distance refers to the
distance between the torch tip and the workpiece
Light gauge sheet steel may be cut using a cutting amperage as ow as
7 amps
Plasma Arc Cutting
An electrical power supply and a cutting gas
By passing the gas through an electric arc inside the torch
Most heavy-duty plasma-arc cutting system require one gas cylinder containing the cutting gas and another containing
shielding or cooling gas
Appropriate protective clothing and equipment