Arc welding method, arc welding robot control device and arc welding system
2010
The present invention provides an arc welding method which can cause forming of more attractive weld bead, an arc welding robot control device and an arc welding system. The arc welding method comprises a unit welding step. The unit welding step is repeated in the arc welding method, wherein, the unit welding step comprises the following steps: a step of generating arc thereby transferring drop; and a step of generating arc and cooling molten pools formed on the welding base material. The arc welding method further comprises a step of periodically changing the welding state values such as time (T1) of the process for transferring drop which are preset in each unit welding process and is reflected in a molten state of a consumable electrode or a molten state of the welding base material. Thus, even when the temperature of the base material is changed, an optimal welding state value can be determined. Therefore, the melting state of the consumable electrode or the welding state of the base material can be optimized. As a result, the formed weld bead is more attractive.
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