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Resistance welding- Seam Welding

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Resistance welding- Seam Welding

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  1. Seam Welding • Seam Welding is a Resistance Welding process of continuous joining of overlapping sheets by passing them between two rotating electrode wheels. Heat generated by the electric current flowing through the contact area and pressure provided by the wheels are sufficient to produce a leak-tight weld • Seam Welding is high speed and clean process, which is used when continuous tight weld is required (fuel tanks, drums, domestic radiators, gasoline tanks, automobile muffler )

  2. Resistance Seam Welding (RSEW) • Continuous weld on two overlapping pieces of sheet metal –can be leak proof (tanks, reservoirs) • It is like frequency spot welding process, with the current applied periodically • Typical welding speed (~ 60 in/min) • Types of seam-lap seam weld • finish seam weld –only one side of the joint is visible • Water cooling of electrodes is needed • Seam welding used in manufacturing of metal containers, automobile parts, tanks, pipes

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