Plasma cutting is a processing method using heat of the high-temperature plasma arc to melt or locally melt(and evaporate) the metal at the incision of the workpiece and using the momentum of the high-speed plasma to remove the molten metal to form an incision. Multiplaz 3500, a traditional plasma product, includes a plasma torch and cabinet with the total weight of 9 kgs. It is widely used in various industries like the automobile, haulage motor, pressure vessel, chemical machinery, nuclear, general machinery, engineering machinery and steel work industry.