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Is it possible to spot welding thin and thick plates?

In the case of spot welding between a thin plate and a thick plate, nugget tends to be closer to the thick plate than to the bonded surface.
Generally, if the thickness is 1:3 or less, welding is possible with the welding condition on the thin sheet side. However, if nugget does not extend to the joint surface, nugget will move toward the thin sheet side by increasing the current, reducing the diameter of electrode end on the thin sheet side, or decreasing the tip R.


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