| 摘要 |
The invention pertains to a method for welding by depositing drops of molten metal at the end of a welding electrode into a weld puddle, in particular for short-circuit arc welding, and an apparatus for carrying out said method. The method comprising the steps of:
moving the welding electrode towards the weld puddle, at least until the drop of molten metal at the end of a welding electrode short-circuits with the weld puddle;
providing a current to the welding electrode; and
superimposing a periodic signal having a frequency and an amplitude onto the current, at least until after the short-circuit has cleared. In an embodiment the current and/or the frequency of the periodic signal is adjusted, preferably continuously varied or scanned, at least until after the short-circuit has cleared. |
