Plasma cutting machine is matched with different working gases to cut various metals which are difficult to cut by oxygen, and particularly has better cutting effect on non-ferrous metals (stainless steel, carbon steel, aluminum, copper, titanium and nickel); Its main advantages are that when cutting metal with small thickness, plasma cutting speed is high, especially when cutting ordinary carbon steel sheet, the speed can reach 5-6 times of oxygen cutting method, cutting surface is bright and clean, thermal deformation is small, almost no heat affected zone.

With the development of plasma cutter, the working gas that can be used (working gas is the conductive medium and heat carrier of plasma arc, and the molten metal in the incision must be excluded) has obvious influence on the cutting characteristics, quality and speed of plasma arc cutting. Commonly used plasma arc working gases are argon, hydrogen, nitrogen, oxygen, air, water vapor, and some mixed gases.

Plasma cutting machine is widely used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, steel structure and other industries! It is a safe, simple, effective, multi-functional, and environmentally friendly method for hot working (cutting, welding, brazing, quenching, spraying, etc .) of metals having a thickness of more than 0.3mm by obtaining plasma from water vapor, which is well known in the history of the metal processing industry.