WELDING METHOD BY ARC WELDING

WELDING METHOD BY ARC WELDING

PROBLEM TO BE SOLVED: To provide excellent welding result even when the gap of a joint is fluctuated by constantly detecting the welding current during the arc welding, and calculating the difference between the detected welding current and the welding current at the standard gap to increase/decreas...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KANJIYOU YOSHIHIRO, MURAYAMA MASATOMO, SUGITANI YUJI
Format: Patent
Sprache:eng
Schlagworte:
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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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide excellent welding result even when the gap of a joint is fluctuated by constantly detecting the welding current during the arc welding, and calculating the difference between the detected welding current and the welding current at the standard gap to increase/decrease the welding speed. SOLUTION: The welding current Ia is constantly detected during the consumable electrode type arc welding. The difference ΔIa=Io-Ia between the detected welding current Ia and the welding current Io at the preset standard gap is calculated. When ΔIa>0, or not less than (e) of the non-sensitive zone width, the welding speed is increased until ΔIa=0 or the absolute value of ΔIa is