Answer;
-Pure oxygen
The oxyfuel cutting process creates oxides that mix with molten iron to produce dross, which is blown from the cut by a jet of pure oxygen.
Explanation;
-Oxyfuel cutting (OFC) is process that uses the flame and oxygen from a cutting torch to cut ferrous metals. The cutting process result in oxides that mix with molten iron and produce dross, which is blown from the cut by the jet of cutting system.
The Oxyfuel cutting process is used on Ferrous metals such as straight carbon steels, which oxidize rapidly.
