How an arc gets initiated in Submerged Arc Welding (SAW) process?

Nivas Ramachandiran @Nivas-Ramachandiran

05 October 2016 1 9K Report

The thin air column gets ionised which creates a bridge for the transfer of charged particles from electrode to workpiece and vice versa. This creates an arc.

This concept holds good for SMAW,GMAW & GTAW.

But in SAW since the space between the electrode and the workpiece is filled with flux powder how an arc gets initiated?

Pavel Layus

Flux generally helps to make the arc initiating process simpler and it can affect arc stability by containing materials of various ionization potential. Materials which are added to the flux to produce vapors alone with low ionization

potential are classified as arc stabilizers.

Please read more in the publication below:

http://www.academicjournals.org/journal/JMER/article-full-text-pdf/6600B2240067

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