Oxy-fuel flame cutting
Oxy-fuel cutting is a thermal cutting process in which the material is brought to ignition temperature by a heating flame and then burned with a pure oxygen jet. It is especially suitable for unalloyed and low-alloy steels.
Physicochemical mechanism of action
The material is first brought to its ignition temperature by a heating flame. Then a pure oxygen jet is injected, which burns the material and blows it away. This process removes metal from the workpiece surface without contact damage.
Metallurgical relevance & risks in welding
Oxy-fuel cutting is especially suitable for unalloyed and low-alloy steels because it does not cause chemical reactions with the material. It minimizes the risk of contact damage and increases cutting precision. However, a lack of oxygen jet can lead to incomplete combustion, resulting in contact damage and insufficient separation.
Workshop practice & instructions
• Preparation: Make sure the material is brought to its ignition temperature. This can be achieved with a heating flame.
• Oxygen jet: Use a pure oxygen jet to burn and blow away the metal. Ensure the jet is continuously applied to guarantee complete combustion.
• Temperature control: Monitor the material's temperature to ensure it stays above the ignition temperature. This prevents incomplete combustion and contact damage.