since the vairable (the transfer mode )for CO2 welding is essential,

anybody can tell the easy way to distinguish the difference between globular arc, spray arc and short-circuiting arc,

especially for GMAW-S, any observed character can be found during the welding, using the eye watching through the glass mask or the some Oscilloscopes( some electrical wave indicator) or the welding machine power character such as the output voltage and current of the machine?

_________________
Paul Wei

anybody can tell the easy way to distinguish the difference between globular arc, spray arc and short-circuiting arc,


darkrain,

To make it simple as possible for modes of GMAW transfer. For shortcircuit transfer welding wire actually short circuit (touching) the base metal 90-200 times per second and the wire speed, voltage and deposition rates are lower than spray transfer. Shortcircuit has a crackling sounds like bacon frying during welding. For globular transfer a large globs of wire are expelled of the end of the electrode wire and enter the weld puddle. It also refers to the state of transfer between short-circuiting and spray arc transfer while the spray arc transfer a stream of tiny molten droplets across the arc, from the electrode wire to the base metal and to achieve a good spray transfer an argon rich shielding is amust.

leem817

Many thanks for your help

_________________
Paul Wei