Plasma is a
collection of charged particles. Plasma contains equal number of positive ions
and electrons. In the other word, Plasma can be described as electrically
heated gas stream. Copper nozzle is used in the Plasma cutting torches to
compress the gas stream with the arc flowing through it. The arc changes itself
into a transferred arc when it jumps from the electrode in the torch to a
metal. In gist, it is the basic of Flame profile cutting machines.
Plasma
Cutting Service Only Used for Conductive Materials
The Plasma
service is used only for conductive materials like mild steel, stainless steel
and aluminium. There are some other metals too like copper, brass, titanium,
cast iron; these metals are conductive too but the problem is melting
temperature of these alloys make them difficult to cut with a good quality
edge.
Components
and Features that Makes The Plasma Service Best
The
electrode used in Flame profile cutting machines is made of copper. A
metal is inserted at the point where the arc is attached. The reason is as
copper is melted very fast, facing a trouble is quite possible if the arc is
directly attached with the cutter. Tungsten is considered as a useful electrode
material so now the days, all the electrodes have a tungsten insert.
Pencil
Shaped Electrode Another Style for Plasma Torches
Pencil
shaped electrode which is completely made of tungsten is generally used for
small Plasma torches. But tungsten has a problem by itself, it burns itself up
when used in the presence of oxygen. Engineers have made a solution to this
problem. They have invented a material called Hafnium which lasts long in the
presence of oxygen.
The
engineers emphasizes on using pure oxygen while cutting mild steel or carbon
steel. The chemical reaction between oxygen and base metal helps to speed up
the cutting process and edge quality is also going to be improved.
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