Welding

Art of fastening metals (or plastic) together by means of interfusing them. They are heated to a suitable temperature. In some cases pressure is used to bond them together. In other cases a filler material (solder) is used to join them. Among the approximately 40 different welding methods, the resistance welding processes, and especially spot welding, are most relevant for automobile production, whereas arc welding methods are most relevant for servicing and repair.
See also arc welding, atomic arc welding, automatic welding, back-step welding, backhand welding, backward welding, braze welding, bronze welding, downhand welding, flat position welding, forward welding, friction welding, gas metal-arc welding, gas tungsten-arc welding, gas welding, hammer welding, heated tool welding, hot gas welding, inert arc welding, inert gas-arc welding, leftward welding, mig welding, oxyacetylene welding, oxygen-acetylene welding, percussion welding, plastics welding, plug welding, projection welding, puddle welding, pulse arc welding, resistance welding, sigma welding, spot welding, tack welding, tig welding, ultrasonic welding