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Seam welding is a resistance welding process for joining metal sheets in continuous, leak tight seam joints by directly applying opposing forces with electrodes consisting of rotary wheels. The seam of the resistance seam welding machine consists of individual weld spots. The formation process of each weld spot involves three stages: pressure application, heating and melting, and cooling and crystallization, similar to spot welding. However, there are significant differences between seam welding and spot welding. Due to the inevitable occurrence of diversion, the distribution of the electrical and thermal fields in the welding area possesses its own characteristics. The rotary wheel of the seam welder continuously rotates to change the welding position during the application of pressure and electric heating, and as a result, the distribution of the electrical and thermal fields and the crystallization characteristics of the molten zone are all related to the speed of position change.
Products requiring sealed welding, such as welding temperature controllers, battery nickel sheets, oil-filled radiators, power capacitors, car shock absorbers, bicycle wheel rims, fryer baskets, water pumps, and can and barrel manufacturing.
