The plasma cutting system is mainly composed of water supply device, power supply and cutting gun. The water-cooled gun also needs cooling circulating water device.
(1) The main equipment of the air supply device for air plasma arc cutting is an air compressor larger than 1.5 kw. The gas pressure required for cutting is 0.3-0.6 MPa.
(2) DC power supply with steep drop or constant current characteristics is used for plasma cutting.
(3) The specific form of the cutting gun depends on the current level of the cutting gun. Generally, the cutting gun below 60A adopts air-cooled structure, while the cutting gun above 60A mostly adopts water-cooled structure.