Welding Cast Iron Oxy Acetylene. Oxyacetylene welding is one of the most well established methods of joining cast iron. Once you try to curtail the extreme heat and quick cooling of the electric welding process then oxy-acetylene is the option.
The neutral flame has nearly one-to-one ratio of acetylene and oxygen by volume. The welding rod should be melted in the molten weld. Only high pressure dissolved acetylene can be used for cutting cast iron.
Oxy-acetylene welding is another option frequently used to weld cast iron.
Such a flame however is quite suitable for welding high carbon steel and cast iron. Stick welding is a complex welding method. Oxy-acetylene welding is another option frequently used to weld cast iron. Because unappropriated steps can give it more cracks in the pieces.