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Welding processes5 resistance welding
Resistance Spot Welding ! "# Resistance Spot Welding $% & '()"& '(*'(+",-'( Resistance Seam Welding (RSEW) Resistance Seam Welding (RSEW) !. /0"# "01 '(%" "%-'(2 -1 [...]...Solid State Welding Processes High Frequency Resistance Welding (HFRW) Solid State Welding Processes High Frequency Resistance Welding (HFRW) Similar to seam welding Exception: employ high-frequency current (up to 450 kHz) The heated edges are pressed together by passing the tube through a pair of squeeze rolls Any flash is then trimmed Can fabricate structural sections (such as I beams) by welding the... (such as I beams) by welding the webs and flanges made from long flat pieces (b) High Frequency Induction Welding (HFIW) Note the electrical coil Solid State Welding Processes Resistance Projection Welding (RPW) Solid State Welding Processes Resistance Projection Welding (RPW) High electrical resistance at the joint is developed by embossing one or more projections (dimples) on one of the surfaces