The most common type of gasless welding is MIG (Metal Inert Gas) or FCAW (Flux-Cored Arc Welding). Both processes use self-shielded flux core wire, which produces its own shielding gas during the arc. The flux core wire also provides additional protection from oxidation and contamination during the weld process, resulting in stronger welds with less spatter and better penetration.
The process involves the use of an electrode wire that contains a flux core. This flux core helps to protect the weld from oxidation and other contaminants in the atmosphere. The wire is then fed through a welding machine and an electrical current is passed through it which creates an arc between the two pieces of metal being joined. This arc melts both pieces together which forms a strong bond.