WELDING OPERATIONS I - OD1651 - LESSON 1/TASK 1
SEAM, SPOT, FLASH, AND UPSET WELDS.
(7) Seam Weld (figure 10).
This weld is made either by arc
seam welding in which a continuous weld is made along fraying
surfaces by drawing the arc between the electrode and the
workpiece, or by resistance seam welding where the weld is a
series of overlapping spot welds made progressively along a joint
by rotating the circular electrodes.