Leegilõikus

Leegilõikus, also known as flame cutting, is a thermal cutting process that uses a fuel gas and oxygen flame to heat metal to its ignition temperature and then cut it with a jet of pure oxygen. This method is primarily used for cutting ferrous metals, such as steel, that have a high melting point and can be easily oxidized. The process begins by preheating the metal workpiece to a bright red or cherry red color using a torch that mixes a fuel gas, commonly acetylene or propane, with oxygen. Once the metal reaches its ignition temperature, a separate jet of high-pressure oxygen is directed onto the heated area. This oxygen stream rapidly oxidizes the metal, forming molten metal oxide, which is then blown away by the force of the oxygen jet, creating the cut. The speed and quality of the cut depend on factors such as the type and thickness of the metal, the gas pressures used, and the skill of the operator. Leegilõikus is a versatile technique often employed in fabrication, demolition, and repair work due to its ability to cut through thick materials and its relatively low equipment cost compared to some other cutting methods. It is important to note that this process is not suitable for non-ferrous metals like aluminum or copper, as they do not readily oxidize.