| 摘要 |
PROBLEM TO BE SOLVED: To provide such a weld line profile control method as exactly copies a weld line even if a weaving frequency is increased, and prevents an undercut from being caused on a base metal. SOLUTION: The weld line profiling control method which comprises a weaving position detecting means for detecting a weaving position of a welding torch, a feeding speed control means for variably controlling a feeding speed of a welding wire, and a feeding speed instruction output means for outputting a feeding speed instruction of the welding wire, in which positional information of the welding torch within a weaving section is obtained from the weaving position detecting means and thereby the feeding speed control means outputs a feeding speed instruction lower than an average wire feeding speed to the feeding speed instruction output means for a preset time when the torch is moving from the weaving center to the weaving edge, and in which the feeding speed control means outputs a feeding speed instruction higher than the average wire feeding speed to the feeding speed instruction output means for a preset time when the welding torch is moving from the weaving edge to the weaving center, is provided.
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