Plasma cutting was originally developed for the thermal cutting of materials which were unsuitable for flame cutting, such as high alloy steels or Aluminum. Today, the process is also used for the economical cutting of thin, low alloyed steels.


One common description of plasma is to describe it as the fourth state of matter. We normally think of the three states of matter as solid, liquid and gas. For a common element, water, these three states are ice, water and steam. The difference between these states relates to their energy levels. When we add energy in the form of heat to ice, the ice melts and forms water. When we add more energy, the water vaporizes into hydrogen and oxygen, in the form of steam. By adding more energy to steam these gases become ionized. This ionisation process causes the gas to become electrically conductive. This electrically conductive, ionised gas is called a plasma.


CNC innovation or technology was connected to plasma cutting machine, giving plasma cutting machines more notable flexibility to cut various shapes on request in view of a collection of guidelines that were customized into the machine's numerical control. These CNC plasma cutting machines were apart, for the most part, constrained to cutting examples and parts in level sheets of steel, utilizing just two axes of movement it is alluded to as X Y cutting).


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The plasma cutting process, as used in the cutting of electrically conductive metals, utilizes this electrically conductive gas to transfer energy from an electrical power source through a plasma cutting torch to the material being cut.

The basic plasma arc cutting system consists of a power supply, an arc starting circuit and a torch. These system components provide the electrical energy, ionization capability and process control that is necessary to produce high quality, highly productive cuts on a variety of different materials.

The power supply is a constant current DC power source. The open circuit voltage is typically in the range of 240 to 400 VDC. The output current (amperage) of the power supply determines the speed and cut thickness capability of the system. The main function of the power supply is to provide the correct energy to maintain the plasma arc after ionization.

The arc starting circuit is a high frequency generator circuit that produces an AC voltage of 5,000 to 10,000 volts at approximately 2 megahertz. This voltage is used to create a high intensity arc inside the torch to ionise the gas, thereby producing the plasma.

The Torch serves as the holder for the consumable especially nozzle and electrode, and provides cooling (either gas or water) to these parts. The nozzle and electrode constrict and maintain the plasma jet.


  • Plate thickness: 0,8 mm up to 150 mm
  • Typical: 3 mm up to 75 mm


  • Low to high cut quality
  • Smooth, edge surface
  • Metallurgical perfect surfaces for welding
  • Medium heat input
  • Excellent cutting speed
  • Hardening within the area of the HAZ
  • Wide range of material