Resistance Seam Welding

Resistance seam welding

A form of resistance welding that uses copper roller electrodes to provide a continuous run of overlapping spot welds

as the current is activated at set intervals. One of the electrodes may be driven by an electric motor.

The workpiece is moved between the rollers and pulses of current are supplied. Each pulse is set to last long

enough to produce a spot weld. The time interval is controlled so that these spots overlap by approx. 40% of their length along the seam.