Spot Welding

#Resistance spot #welding (RSW) is a process in which contacting metal surface points are joined by the heat obtained from resistance to #electric current

spot welder
spot welder

It used to weld metal sheets (0.5-3mm) thickness by holding the two pieces together and applying a force then electric current flows through copper electrodes that concentrates current into small spot at the welded pieces

The pieces have a higher resistance than electrodes so the current produces heat when passes through it

Spot-Welding
Spot-Welding

This heat melts metal pieces in the welding spot and the pressure joins it together

The high amperage current is produced by electric #transformer

transformer
transformer

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