Resistance Welding: Resistance welding is a heat and squeeze process. The
parts that are to be welded, while being forced together by mechanical
pressure, are raised to the temperature of fusion by the passage of a heavy
Filler materials are not usually used. Lap and
electrical current through the junction.
butt joints are the usual types involved. A form
of resistance welding known as “spot welding”
is extremely common and useful where sheet
metal is to be joined at specified interval along
a seam.