Alternating-current welding method and alternating-current welding device

The invention provides an alternating-current welding method and an alternating-current welding device. If arc interruption occurs during AC arc welding, a first AC frequency predetermined for normal welding is switched to a second AC frequency higher than the first AC frequency. This allows the arc...

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Bibliographic Details
Main Authors NORIKAZU OOSAKI, YOSHIAKI TANAKA, MASAFUMI NARUTO, YOSHIYUKI TABATA
Format Patent
LanguageEnglish
Published 02.09.2015
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:The invention provides an alternating-current welding method and an alternating-current welding device. If arc interruption occurs during AC arc welding, a first AC frequency predetermined for normal welding is switched to a second AC frequency higher than the first AC frequency. This allows the arc to be reignited without applying a high frequency high voltage, thereby preventing the damage of the surface of the weld bead or communication failure due to the high frequency high voltage.
Bibliography:Application Number: CN201510296835