In resistance welding, the pressure is
released
Just at the time of passing the
current
After completion of current
After the weld cools
During heating period
After the weld cools
Resistance welding sometimes called Electric Resistance
Welding (ERW), is a process by which metals can be joined together by
applying pressure and conducting a strong electric current through the metal
combination to heat up the area to be welded and melt the metals, joining
them together. The pressure is released only after the weld cools and
solidifies.
Hence, the correct option is (C).
&Key Points:-
The major types of resistance welding
are given as under:
(1) Spot Welding
(2) Seam Welding
(3) Projection Welding
(4) Resistance Butt Welding
(5) Flash Butt Welding
(6) Percussion Welding
(7) High Frequency Resistance Welding
(8) High Frequency Induction Welding
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