The Projection welding machine also belongs to the resistance welding family, it is quite popular amongst users because of its degree of working which is at 90°.
Sheet metal industries use these machines for multi spot processes also where the projections are taken out on the sheets so that a large area of welding can be done keeping in mind that the fusion is only happening through the dimples or projections.
This is a really smart way of welding where surface area is reduced but current distribution is done in an efficient manner ao that welding takes
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