Scientists have shown that apart from the three states of matter know they know solid, liquid and gas, is the fourth type known as plasma. It occurs naturally in the earth. When a gas is heated to very high temperatures, enormous energy is transferred to ionize the atoms in its basic components, nuclei and electrons. Plasma is known that a good electrical conductor. Plasma cutters work, passing a gas through a narrow opening, and is in contact with an electric arc. The gas can be used, nitrogen, oxygen, argon and compressed air. This ensures that the temperature of the gas resulting astronomical increase in the production of plasma. This released energy is transferred to the metal under the action of the ownership of the electrical conductivity of plasma. Since the plasma is actually a liquid, it has the ability to lose the metal surface residues cut.The main drawbacks of conventional gas-cutters made clear they were not capable of cutting metal with good conductivity. This drawback is overcome with the new plasma cutter. The cutter can be used to cut mild steel, cast iron, aluminum, copper and stainless steel. Therefore, it is widely used in industry when it comes to this type of operation. The new plasma cutters are relatively more expensive than conventional gas, cutters, giving them better than the old type cutters. They have the advantage of being easy to use and provide economic benefits, such as minimizing energy consumption. Since the components do not need fuel, the risk factor involved in much less. They can run on electricity or gas. There are cases in which nitrogen or compressed air can be very used.Plasma cutters are considered more effective than conventional fuels Oxy cutters, in its work comprehensively, quickly and efficiently. Plasma cutters generates heat about 22,000 degrees of fuel, and oxygen generation only 3150 degrees Celsius. You can easily burn through most paints and surface coatings such as rust and still give excellent cutting results. It is essential to an idea of how thick the metal is that you plan to reduce the thickness of the metal equipment.The have a direct impact on the size of the required equipment. For operations involving cutting of thin metal, a smaller machine that is sufficient to thick metal is necessary to cut heavy equipment. Several models are available and are unique in design and performance. Famous brands include Miller, Esbab, Lincoln and CNC plasma cutters. Hypertherm plasma cutter will work with the high temperature plasma, so that all safety procedures must be strictly observed.