The working principle and technology of spot welding machine
The spot welding machine adopts the principle of double-sided double-point overcurrent welding. During work, the two electrodes pressurize the workpiece to make the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and the welding current flows from one electrode to the other. Instantaneous thermal welding is formed at the two contact resistance points, and the welding current flows from the other electrode along the two workpieces to this electrode to form a loop, without harming the internal structure of the workpiece being welded.
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