Practical operation of welding:

It is frequently necessary when referring to procedure to mention the way they are utilized, particularly whether the operation is automatic or manual. The practical operation of welding might be divided into three main parts

1. The control of welding conditions (specifically arc length and electrode or filler-wire feed rate and time).

2. The movement and guiding of the electrode, torch or welding head along the weld line.

3. The presentation or transfer of parts for welding.

Procedure are described as manual, semi-automatic, or automatic, based on the extent to which the parts mentioned above are carry out manually. Manual welding is understood to be that in which the operator constantly controls the welding variables and the means for welding are held in the operator's hand. In semi-automatic welding there is automatic control of welding conditions such like arc length, rate of filler-wire addition and weld time, however the movement and guiding of the electrode, torch Welding Technology or welding head is done by hand. By automatic welding at least parts (1) and (2) of the operation ought to be done by the machine. As feedback control devices are introduced and welding takes its place more often in the automatic production line, other definitions shall be required.