Abstract
The electrode-melting rate and molten-droplet parameters during arc welding with pulsed current are considered. The discreteness of the droplet detachment is taken into account. Calculations agree well with the experimental fact that there is a range of operational parameters within which one droplet is transferred per current pulse. Variations of the droplet parameters and the melting rate within this range are calculated. It is shown that the high-frequency limit of this one-droplet-per-pulse range is characterized by the least thermal load on the weld, the least amount of fumes and the highest melting rate.
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