polttoleikkaus

Polttoleikkaus, also known as oxy-fuel cutting or flame cutting, is a thermal cutting process that uses a fuel gas and oxygen to cut through metals. The most common fuel gases used are acetylene, propane, and natural gas. The process works by preheating the metal to its ignition temperature with a flame produced by the fuel gas and oxygen. Once the metal reaches this temperature, a jet of pure oxygen is directed at the heated area, causing the metal to oxidize and burn. The molten oxide and slag are then blown away by the force of the oxygen jet, creating a clean cut.

This method is particularly effective for cutting ferrous metals, such as steel, which readily oxidize. It is not suitable for cutting non-ferrous metals like aluminum or stainless steel, as they form protective oxide layers that prevent the cutting process. Polttoleikkaus is widely used in various industries, including shipbuilding, construction, scrap metal processing, and heavy manufacturing, due to its ability to cut thick plates of metal. The equipment required is relatively simple and portable, making it versatile for on-site applications. The quality of the cut depends on factors such as the type of fuel gas, oxygen pressure, cutting speed, and the cleanliness of the metal surface. While effective for thick materials, it typically results in a wider kerf and a rougher surface finish compared to other cutting methods like plasma or laser cutting.