Plasma Cutting is a method adopted in which a gas is thrown out of a compressed outlet which when comes out with great pressure
is heated at high temperature. This gets the energy in the form of electric arc that has the power to melt even the solid
metals that are electrically conductive. Just buying a cutter isn’t enough. One needs to know how effectively it can be used and
enjoy the maximum advantage of it.
Normally the Plasma Cutters are used to cut through metals to give them the desire shape and size. But at the same time it
requires that the look also is good enough for which a smooth edge and cut is more important. A beautifully designed metal product
with a rough finish and considerable amount of dross is sure to loose the charm and attraction.
For the best cut quality and better performance one need to have the basic idea about how a plasma cutter works, how it is to be
handled, how the controls are to be set, what gas is appropriate for what metal and of what thickness.
So before beginning to use a cutter, read its manual in detail and try to understand it. Though initially, if you are a new user,
you may face some hiccups, you may not get the fine cut at the first instance itself because the cutter needs to be moved at a
steady and requisite pace that would match the amps and voltage at which the controls are set.
However, with every step of it, you are sure to get steady and improve. Your hands should get acquainted with the vibrations
that it causes and it should be steady. This can be termed as “Machine Motion Control”. When the torch with the electric
arc is used, it should be kept at the correct distance from the material. Too close or too far may cause blunt cuts, deeper than
required cuts and possibly failure to consumable parts.
The gas used in the process also contributes to the cut quality. Nitrogen is more effective when used on stainless steel.
Oxygen can be avoided as it results in a rough and oxidized edge. A proper height needs to be maintained and this may
vary with the thickness of the metal. This not only ensures a proper cut but also safeguards the nozzle and shield cap from being damaged.
Depending upon the thickness of the metal that needs to be cut, the voltage and speed is to be set. Thicker the metal, higher
the voltage needs to be. But the speed needs to be set depending upon the steadiness of the operator’s hand that dealing with it.
If this is a mismatch, it may very well spoil the whole quality of the metal being cut.
The best thing would be to give a dry run on a similar kind of metal piece and know in detail the
fine tuning methods and then get ready to show your skill on the actual piece. With the correct
cutter, proper handling and safety measures one can transform an otherwise drab metal into a piece of
art or a useful stuff with a clean finish.