Device for arc welding, in particular submerged-arc welding, with one or several fusible electrodes
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United States of America Patent
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Apr 22, 1986
Grant Date -
N/A
app pub date -
Jun 20, 1984
filing date -
Jun 21, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for arc welding having one or more fusible electrodes (15) which are in each case supplied from an alternating-current source (14) having a falling characteristic. The feed rate of the electrode (15) is regulated for constant arc length as a function of the arc voltage. Via a further regulator (37), the deposition efficiency is regulated by supplying the regulator (37) with the feed rate as actual value and changing the welding-current intensity as a function of this value. The change in welding-current intensity leads to an increase or decrease in arc length which, in turn, is compensated via the first regulator by changing the feed rate.
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