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A portable spot welder. Spot welding (or resistance spot welding [1]) is a type of electric resistance welding used to weld various sheet metal products, through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current.
Electric resistance welding (ERW) is a welding process in which metal parts in contact are permanently joined by heating them with an electric current, melting the metal at the joint. [1] Electric resistance welding is widely used, for example, in manufacture of steel pipe and in assembly of bodies for automobiles. [ 2 ]
Friction stir spot welds have a high strength, so they are even suitable for parts that are exposed to particularly high loads. In addition to automotive and rail vehicle construction, the aerospace industry is developing the process e.g. for welding cockpit doors for helicopters. [3]
This is a list of welding processes, separated into their respective categories. The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063 ). [ 1 ]
In robot welding, mechanized devices both hold the material and perform the weld [79] and at first, spot welding was its most common application, but robotic arc welding increases in popularity as technology advances. Other key areas of research and development include the welding of dissimilar materials (such as steel and aluminum, for example ...
Automotive spot welding AWS D8.6: Automotive spot welding electrodes supplement AWS D8.7: Automotive spot welding recommendations supplement AWS D8.8: Automotive arc welding (steel) AWS D8.9: Automotive spot weld testing AWS D8.14: Automotive arc welding (aluminum) AWS D9.1: Sheet metal welding AWS D10.10: Heating practices for pipe and tube ...