What is a CNC Plasma Cutter?
Author : igoldencnc laser | Published On : 05 Aug 2026
The CNC plasma cutter machine is matched with different working gases (the working gas is the conductive medium of the plasma arc and the heat-carrying body. At the same time, the molten metal in the incision must be removed. The commonly used plasma arc working gases are argon, hydrogen, nitrogen, oxygen, and air. , Water vapor and some mixed gases) can cut all kinds of metals that are difficult to cut by oxygen, especially for non-ferrous metals (stainless steel, carbon steel, aluminum, copper, titanium, nickel). The cutting effect is better. Due to the fast cutting speed and accuracy High, low cost, plasma cutting has been widely used in large industrial CNC applications to small hobbyist shops and is widely used in locomotives, automobiles, pressure vessels, nuclear industry, chemical machinery, general machinery, steel structure, construction machinery and other industries.
CNC plasma cutter machines are divided into working methods: dry plasma, semi-dry plasma, and underwater plasma; in terms of cutting quality, they are divided into ordinary plasma, fine plasma, laser-like plasma, etc.
The plasma cutting machines provided by our company include flat plasma cutting machine, plate and tube integrated plasma cutting machine, square tube plasma cutting machine, portable plasma cutting machine, round tube plasma cutting machine, gantry plasma cutting machine.
CNC plasma cutter machine, also known as CNC plasma cutting machine, plasma cutter, plasma cutting table, plasma cutting machine.
What is the working principle of the CNC plasma cutter?
CNC plasma cutter machine, also known as plasma arc cutting machine, combined with an easy-to-operate numerical control system, uses high-temperature high-speed gas jets at the nozzle to ionize, thereby forming electrical conductors. When current passes, the conductive gas forms a high-temperature plasma arc, The heat of the arc locally melts (and evaporates) the metal at the incision of the workpiece, and uses the power of the high-speed plasma flow to remove the molten metal to form a processing method of the incision.
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The basic principle is that the arc formed between the electrode and the workpiece is limited by the fine-hole copper nozzle. This increases the temperature and velocity of the plasma emitted from the nozzle. The temperature of the plasma exceeds 20,000 °C, and the velocity can be close to the speed of sound. When used During cutting, the plasma flow increases, so that the penetrating plasma jet cuts through the material, and the molten material is removed in the outflowing plasma.
The difference between this process and the oxy-fuel process is that the plasma process operates by using an electric arc to melt the metal, while in the oxy-fuel process, oxygen oxidizes the metal, and the heat generated by the exothermic reaction melts the metal. Therefore, unlike the oxy-fuel process, the plasma process can be able to cut metals which form refractory oxides, such as aluminum, stainless steel, cast iron, and other non-ferrous metals.
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