In case of mild steel of higher thicknesses, oxy-fuel cutting is the qualitatively optimal cutting procedure. Although plasma and laser cutting has gained in popularity, oxy-fuel cutting remains a highly economic cutting procedure, achieving good cut quality. In particular in case of material thicknesses of up to 1200 mm, oxy-fuel cutting remains the method of choice.
A flame of propane, acetylene or high fuel-value natural gas from a torch is used to pre-heat the to-be-cut material quickly to its ignition temperature (ca. 1050 to 1526 degrees Celsius. Subsequently, a gas jet of minimum 99,5% oxygen is blown onto the heated material, so the pre-heated material starts to burn. The torch is dragged further, and where the burnt material is missing, a narrow kerf occurs.
As this burning of material (oxidation) is an exothermic process, hence releasing energy and thereby feeding itself, the procedure is very energy-saving. The torch is only required to maintain the ignition temperature along the kerf.
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The ZINSER Favorit I & Favorit II are portable flame cutting machines with infinitely variable drives.
ZINSER Favorit V : portable CNC plasma and oxy-fuel cutting machine
For more than 100 years ZINSER has been exploring the use of acetylene and other gases.
Pressure regulators for cylinders, pressure regulators for distribution points, welding and cutting torches as well as complete sets from ZINSER are a worldwide synonym for quality.