Welding Rods and Electrodes
Welding Rods and wires differ with the various welding processes. The main welding processes are Arc welding, Mig welding and Tig welding.
Arc welders use welding rods that combine the metal filler surrounded by fluxes that protect and sheild the weld.
When molten metals are exposed to the atmosphere they absorb nitrogen and oxygen causing the metal to become brittle or effected in other ways. Arc Welding electrodes have a flux coating over metal filler rod that provides a slag cover over the molten weld protecting it from the atmosphere as the weld cools.