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longitudinal seam welder

June 26, 2025
A medium frequency seam welding machine is a resistance welding device where the welded parts are assembled into overlapping or butt joints and placed between two roller electrodes. The roller electrodes press the workpieces and rotate, applying continuous or intermittent pulse power, which forms a continuous weld seam. In essence, medium frequency seam welding is an evolution of spot welding. It is widely used in the manufacturing of joints that require sealing, and is sometimes used for welding general non-sealing sheet metal parts. The thickness of the welded metal materials typically ranges from 0.1 to 2.5mm.
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