Welding strength:
The strength of each welding point in spot welding is relatively low, but multiple welding point combinations can provide sufficient connection strength.
The weld strength of arc welding is usually high.
For example, to manufacture a simple metal frame, if spot welding is used, multiple welding points working together can ensure the stability of the frame; If arc welding is used, the strength of a single weld seam is sufficient to support the frame.
Equipment complexity:
The equipment for spot welding robots is relatively simple.
Arc welding robots typically require more complex power sources and wire feeding systems.
Heat affected zone:
The heat affected zone of spot welding is relatively small.
The heat affected zone of arc welding is relatively large.
For example, when welding precision parts, the smaller heat affected zone generated by spot welding is more conducive to maintaining the accuracy of the parts; For large workpieces that are less sensitive to thermal effects, arc welding is more suitable.