| 摘要 |
<p>The invention relates to a welding method and apparatus. According to the method between the welding wire and the base material an arc (4) is electrically formed, which behaves periodically (12, t2) in such a way that the duration of the period is (t2) and within the period (12) at least on average short-circuit periods (11) arise, which have an average duration (t1), and the arc voltage is controlled. According to the invention, the arc voltage is controlled at least mainly in such a way that the ratio of the average duration (t1) of the short-circuit periods (11) to the period duration (t2) is kept to a desired magnitude.</p> |
