To convert AC into DC

To take AC main supply

To rotate the Armature

To supply DC for welding

Weld size

Selection of welding rod

Welding speed

Weld size

Selection of the Nozzle

Distortion in joint

Welding technique

Quality of prepared edges

Feeding of the filler rod

Gas pressure

Blow pip position

Under cut

Surface defects in weld face

Internal distortion of the weld

Fracture test

Bend test