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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. The process uses two shaped copper alloy electrodes to concentrate welding current into a ...
Two pointed electrodes apply pressure and current to two or more thin workpieces. Automobile industry, Aerospace industry. Resistance seam welding [6] 22. RSEW. Two wheel-shaped electrodes roll along workpieces, applying pressure and current. Aerospace industry, steel drums, tubing. Projection welding. 23.
Spot welder. Spot welding is a popular resistance welding method used to join overlapping metal sheets of up to 3 mm thick. [43] Two electrodes are simultaneously used to clamp the metal sheets together and to pass current through the sheets.
Electric resistance welding. 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 welding (FSW) is a solid-state joining process that uses a non-consumable tool to join two facing workpieces without melting the workpiece material. [ 1 ][ 2 ] Heat is generated by friction between the rotating tool and the workpiece material, which leads to a softened region near the FSW tool.
Shot welding is a type of electric resistance welding which, like spot welding, is used to join two pieces of metal together. The distinguishing feature is that in shot welding, strips and sheets of metal (usually stainless steel) are "sewed" together with rows of uniform spot welds. [1] The weld is achieved by clamping the two pieces together ...
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