Plasma Cutting
Our Skew Plasma head allows Contour Plasma cut and gives significant quality assurance and lead time improvements:
• Reduces angular deviations and quality of cut surface
• Capacity to internally produce Hole and Slots at 1:1 ratio 5-25mm
• Significant improvement in cut quality and contour accuracy on inner and outer contours and True Hole processes
• No need for any Drilling or Machining
• Counter sinking and edge quality implicit in our process and very minimal final dressing required.
• Fastest order turn around
• Cuts at lower temperatures reducing heat affected zones and improving cut quality - suited to intricate designs.
• Brown McFarlane's Plasma Cutting

Plate Dimensions Capabilities
Thickness Up to 100mm - depending on end use
Width Up to 3.5 metres
Length Up to 24 metres

The Plasma Cutting Process
Plasma cutting is a process used to cut non-ferrous metals like aluminium plate and steel. Plasma is formed when you raise the temperature of a gas to a very high level in order for it to ionize; the resulting state of matter forms with conductive properties very similar to metal.
As the temperature rises gas molecules break apart, causing atoms to split and electrons to separate from nuclei. The movement of these electrons produce positively charged ions that collide with one another to produce huge amounts of intense energy. It is this energy that gives plasma the incredible and unique cutting power.
Plasma cutters can harness and control this amazing power and use it to create an incredibly precise and powerful cutting tool. Firstly, pressurized gas is sent down a small channel that contains a negatively charged electrode. By introducing power to this electrode and touching the nozzle against the workpiece, you create a circuit; this creates a spark between the workpiece and the electrode.
This spark heats the gas travelling through the channel and therefore creates plasma. At very high speed, this cycle causes a steady stream of focused plasma that can reach around 16,649° Celsius (30,000° Fahrenheit). The incredible speed and intense temperature reduces the metal being cut to molten slag.
To ensure a cut is protected from oxidation, a plasma cutter will also feature an additional set of channels that supply a continuous flow of shielding gas. The pressure created by this gas is released around the cutting area and effectively confines the range of the plasma beam.

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