| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in the conventional spatter reducing method using a current rapid reducing means, in which arc interruption occurs in arc regeneration to cause the instability of the arc, incorrect bead, defective penetration or the like. SOLUTION: A consumable electrode type arc welding equipment includes: a constriction detection means for detecting constriction in a consumable electrode wire occurring at the last period of a short circuit; and a physical quantity rapid reducing means for rapidly reducing the physical quantity of at least any of electric current, voltage and electric power to be fed to the consumable electrode wire when constriction is detected by the constriction detection mean till the prescribed physical quantity of at least any of the electric current, voltage, and electric power reaches a first prescribed value, thus the arc interruption in the arc regeneration, the instability of the arc, the incorrect bead and the defective penetration are prevented. COPYRIGHT: (C)2010,JPO&INPIT
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