| 摘要 |
<p>The invention is to provide an arc welding method and an arc welding system, wherein a weld pass with a uniform width can be formed. The arc welding method is provided as following: an arc (a1) is formed repeatedly between a consuming electrode (15) and base metal (W), simultaneously, a molten drop (151) is transformed from the consuming electrode (15) to the base metal (W), wherein the transformation time is (T1); a cooling time (T2) wherein a melting pool is cooled and formed on the base metal (W), in each molten drop transformation time (T1), the peak time (Tp) including the current with the peak value (Ip) and the base time (Tb) including the current with the base value (Ib) smaller than the peak value (Ip); in each cooling time (T2), at the welding direction, the consuming electrode (15) moves along the base metal (W); when the number of peak times (Tp) reaches a pretermined value, the melting transformation time (T1) is concluded. According to the structure, the welding traces formed on the base metal (W) in each melting transformation time (T1) are uniform. Thereby, the welding channels possess a uniform width which is beautiful.</p> |
