Plasma cutting is an inexpensive method of metal cutting that came into fashion during the 1980s. Certain materials, such as stainless steel, aluminum, and copper, cannot be flame cut, which lead to the invention of Plasma cutters. Early plasma welding machines were paired with computer numerical control (CNC) technology to cut shapes in metal materials based on instructions programmed into the CNC machinery. The technology has had many years to develop and be refined into a method that is very cost-effective. Modernized versions of the plasma cutting machines have more precision than they used to and cost less than other cutting services.
The process is mostly used to cut metal, especially sheet metal and plate, using a plasma torch. These torches are either handheld or attached to a machine with a CNC program that guides the cutting process on a plasma cutting table. A power supply and arc starting circuit connect with as the plasma gas that flows through regulating cables and leads. In this method, a high-voltage spark within the torch body ionizes through the torch head to initiate a plasma arc. A plasma gas including argon, hydrogen, nitrogen, and oxygen mixtures conducts electricity to transfer energy from the electrical source of power through the torch. The intensely high temperature plasma cutting arc connects with the material being cut at temperatures around 25,000 degrees Celsius. The plasma cutting service slices through the material due to the extremely high temperature of the arc, and unlike traditional metal-against-metal cutting, there are no metal chips produced. This high temperature plasma arc melts metal and the gas flow eradicates the material from the below the cut, otherwise known as the kerf.
The plasma cutting method burns thicker material than laser cutting and water jet cutting. It uses gas and electrical currents to melt and cut the work piece rather than water or laser beams, which makes the cutting edge slightly rougher with a beveled and rounded top edge. Depending on the electrical current capacity and the type of metal, cuts can range from 1/8 inch to up to about 2 inches. Plasma cutters are much less expensive and economically favorable.
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Plasma cutting is an inexpensive method of metal cutting that came into fashion during the 1980s. Certain materials, such as stainless steel, aluminum, and copper, cannot be flame cut, which lead to the invention of Plasma cutters. Early plasma welding machines were paired with computer numerical control (CNC) technology to cut shapes in metal materials based on instructions programmed into the CNC machinery. The technology has had many years to develop and be refined into a method that is very cost-effective. Modernized versions of the plasma cutting machines have more precision than they used to and cost less than other cutting services.
