Welding Welding is a fabrication or sculptural process that joins materials,usually metals. Best Known Welding Methods: 1. Shielded Metal Arc Welding(SMAW)-also known as stick welding,uses an electrode that has flux.The electrode holder holds the electrode as it melts away.Slag protects the weld puddle from atmosphere contamination. 2. Gas Tungsten Arc Welding(GTAW)-also known as TIG(tungsten inert gas),uses a non-consumable tungsten electrode to produce the weld.The weld area is protected from atmospheric contamination by an inert gas such as Argon or Helium. 3. Gas Metal Arc Welding(GMAW)-commonly termed MIG(metal inert gas)uses a wire feeding gun that feeds wire at adjustable speed and flows an argon-based gas or a mix of argon and carbon dioxide over the weld puddle to protect it from atmospheric contamination. 4. Flux-cored arc welding(FCAW)-almost identical to MIG except it uses a special tubular wire filled with flux;it can be used with or without shielding gas,depending on the filler. 5. Submerged Arc Welding(SAW)-uses an automatically fed consumable electrode and a blanket of granular fusible flux. The molten weld and the arc zone are protected from atmospheric contamination by being submerged under the flux blanket. 6. Electroslag Welding(ESW)-a highly productive,single pass welding process for thicker materials between 1 inch(25mm)and 12 inches(300mm)in a vertical or close to vertical position.
