What is plasma arc cutting? What are its advantages and disadvantages?

What is the definition of plasma arc cutting? In addition, what are its advantages and disadvantages? Why to raise these questions, mainly because plasma arc cutting, it can also be used to cut steel plate, so it is within the scope of steel plate cutting content, so it is the object we must understand.
Plasma arc cutting, fundamentally speaking, is also a cutting method, which is to turn the mixed gas into plasma through high-frequency arc, and then spray out from the cutting mouth to complete the cutting process. It can be a mixture of hydrogen, argon and nitrogen, but it can also be air. However, due to its high-speed jet, it needs to use a special cutting nozzle to ensure the parallelism and cutting quality of the incision.

The advantages of plasma arc cutting are as follows:
(1) Some metal materials that cannot be cut with oxygen can be cut with it, and it is also suitable for some non-metallic materials.
(2) If the thickness of metal material is not large, its cutting speed is very fast.
(3) The cutting surface is relatively smooth, and the cutting thermal deformation is small, so some formed parts can be cut.
The disadvantages of plasma arc cutting are as follows:
(1) The cutting tolerance is relatively large, and there will be smoke and noise in the cutting process.
(2) The price of the equipment is high and the power consumption is large, so the power supply should be special.