Working of a welding machine:
A welding process is required to join two metal parts by heating them to melting point.
Electrical welding is used for joining of fabricating structures, machinery parts, pipes, bus
bars, bridges, ships railway bogies etc.
Electrical welding has two distinct types:
- Resistance welding : In resistance welding the current is passed through the joint to be
welded and the heat is caused by I2 R losses in the joint, melting of metal and subsequent
welding under pressure between faces to be welded.
- Arc welding : The heat is produced by the arc struck between the welding electrode and the
metal to be welded. Pressure is not applied between faces to be welded.
gregorymasila answered the question on February 22, 2018 at 16:07
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