Plasma cutting, being an electrical process, only works with electrically conductive materials such as steel, aluminium, copper, stainless steel, and other metals.
This process does not create any radio frequency emissions and so is widely employed in CNC plasma cutters. The nozzle, which serves as the cathode, moves against the electrode, which is the anode, to create a spark. In the second type of plasma cutters, the nozzle and an electrode are used to start the pilot arc.This brings us to the second type of plasma cutters. However the high levels of radio frequency emissions this process produces make it unusable CNC hardware or other sensitive electronics. These systems have the advantage of not employing any moving parts.
The first type are high-frequency starting systems that create arcs by putting the nozzle in contact with the workpiece.There are types of plasma cutters that differ by the way the arc is created: The plasma forms an electrical circuit with the workpiece using electricity to melt and cut through it. High-pressure compressed air or inert gas is used to accelerate the plasma out of a cutting nozzle onto the workpiece.
In this process, electrical energy and heat are applied to a gas, causing its molecules to vibrate violently, and turning the gas into plasma. Plasma cutting is a CNC cutting process in which a jet of hot plasma is used to cut material.
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