Welding Cast Iron With A Tig. Oxy-acetylene welding is another option frequently used to weld cast iron. The general consensus among the R-Tech team is that manual metal arc welding MMA should initially be the go-to process for welding cast iron.
It can be expensive but the TIG process can provide a strong and clean weld on most cast iron jobs. Another reason for using AC to tig weld cast iron is that less penetration and therefore less dilution of the cast iron base metal occurs. The general consensus among the R-Tech team is that manual metal arc welding MMA should initially be the go-to process for welding cast iron.
TIG Welding Cast Iron.
I have a very nice ornamental cast iron patio set but movers broke one of the chairs foot. Cast iron can be nasty it can be impregnated with oil carbon or other impuritiesso its best to mix as little of it as possible into the weld. Oxy-acetylene welding is another option frequently used to weld cast iron. MIG requires an Argon gas mixture 80 argon 20 carbon dioxide and a nickel wire.