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What is pilot energization?

For projection welding such as nut welding, welding strength is determined in about one to two cycles of welding at the beginning of energization.
If the projection collapses before the initial current is low and the projection is sufficiently heated, the welding strength becomes low.
With the pilot energizing function, the current at the initial stage of energization can be set appropriately, and welding quality can be improved.


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