Arc welding process: definition, type, and description

Arc welding process itself has a group of welding processes wherein coalescence is produced by heating the job with an electric arc between a source and the work peace. Generally,  there is no need to .the application of pressure in this process.


The use of arc was not possible before 1802. Although the discovery of the electric was started by Benjamin Franklin in 1752, the discovery of Alessandro Volta in 1800 AD made this path even clear when he proved that electricity can also be produced by chemical reactions.

But the arc welding could become possible when the electric dynamos or generators improved between 1870 to1880

 Definition of Arc

The welding arc in arc welding is defined as a sustained electrical discharge through an ionized gas, where the arc is initiated by providing a conducting path between the electrode and the workpiece.

 Definition of Arc welding

In Arc welding process, heat is obtained by an electric arc between the electrode and the workpiece.

Type of Arc Welding

A large number of welding processes are using welding arcs to obtain the heat required for fusion. Here are the most common arc welding procedures:

Carbon arc welding

arc welding

CAW is an arc welding wherein Fusion is produced by heating with an electric arc struck between a carbon electrode and work peace. Read More


arc welding

FCAW introduced in 1950 . This is a modified version of MIG welding process. In which solid wire is replaced by a flux cored (tubular) wire, inside with flux and alloy additions.Read More





GTAW is an arc welding process in which the desired heat is obtained using an electric arc, between the workpiece and the tungsten electrode. Read More


Arc welding

PAW is an arc welding process wherein coalescence is produced by heating by a constricted arc struck between a tungsten/alloy electrode and the job. Read More

Electroslag & ElectrogasWelding

Arc welding

The Electroslag welding process is initiated by introducing an arc between the filler metal/electrode and the work. This arc heats the flux and melts it to form slag.Read More


Arc welding

SMAW is an arc welding process where fusion is done by an electric arc struck between a workpiece and the flux covered electrode. Read More


Arc welding

It is an Arc welding process in which fusion is produced by heating the work along with an electric arc between the continuous filler metal electrode and the weld pool. Read More

Other Arc Welding processes

  • SAW          (Submerged Arc welding)
  • ASW         (Arc Spot Welding)
  • SW             (Stud Arc Welding)