The principle of plasma cutting machine is that plasma heats the gas to a very high temperature, ionizes it to a high degree, transfers the arc power to the workpiece, and the workpiece is melted and blown off at high temperature. Plasma cutting machine is a machine for processing metal materials by means of plasma cutting technology.

Plasma arc cutting machine is a machine that uses plasma cutting technology to process metal materials. Plasma cutting is a processing method that uses the heat of high-temperature plasma arc to melt (and evaporate) part of the metal at the notch of the workpiece, and uses the momentum of high-speed plasma to remove the molten metal to form the notch.