LYCOS RETRIEVER 
Seam Welding
built 633 days ago
These Seam Welding machines are precision and robust construction suitable for long trouble-free service. The application of these machines are in the manufacture of drums and barrels, fuel tank, silencer, muffler etc. JK. Electricals can ... supply SPMs for seam welding application for job such as fully automatic barrel and shell welding (Longitudinal), tub cover welding (circumferential), shock absorber welding, fuel tank welding and other special items.
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Seam welding is used to create larger flat-stock parts; join relatively long components; and create cylinders, cones, or open-ended boxes. The final product often requires these seams to be smooth and defect free. Pressure vessels, tanks, water floats, nuclear components, appliance drums, brewery tanks, and motor shells and housings usually require high-quality welds.
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Seam welding is ... known as resistance welding or roller welding. In this kind of welding, an electrical current is passed through a lid and container. As the metal heats up, the lid is completely joined to the body of the container.
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Seam welding is a resistance welding process for joining metal sheets in continuous, often leak tight, seam joints by directly applying opposing forces with electrodes consisting of rotary wheels. The current and the heat generation are localized by the peripheral shapes of the electrode wheels.
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Seam welding is similar to spot welding except that rotating wheel electrodes are used. The process is used when leak-tight welds or long strings of spot welds are required. Three forms of seam welding exist: standard seam, mash seam, and roll spot welding.
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The HPDDL naturally generates a beam shape that is ideal for continuous seam welding, such as those found of tube mills. Unlike the GTAW and the conventional laser welding, which generate plasma and round heating spots, the diode laser generates a line of light. The line of light allows for a longer interaction time at the seam. The resulting weld pool is only at the seam; it penetrates deeper allowing molten metal to wet together in a very controllable fashion. This yields a conduction mode weld similar to those produced by a GTAW process, with no spatter... there is less sagging and a much narrower heat affected zone which results in an increase in mechanical properties such as fatigue strength and formability10.
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