ARC WELDING METHOD, AND ARC WELDING APPARATUS
PROBLEM TO BE SOLVED: To solve such a problem that a molten state of a welded part becomes unstable when weld defects occur in arc-welding, so that it is difficult to return to a good normal welding state again, and particularly, an opened hole becomes greatly unstable in molten state, so that the r...
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| creator | TAKEYAMA TAKETOSHI TAKENO YOSHIMIZU YAGI YUJI MONOTANE TAKESHI HISHINUMA SHIZUYUKI |
| description | PROBLEM TO BE SOLVED: To solve such a problem that a molten state of a welded part becomes unstable when weld defects occur in arc-welding, so that it is difficult to return to a good normal welding state again, and particularly, an opened hole becomes greatly unstable in molten state, so that the returning to a good normal welding state again is more difficult and the hole tends to be lengthened.SOLUTION: A voltage during arc-welding is monitored all the time, and a hole opening is detected by detecting a moment when a deviation of a certain level or more from a specified value set based on data in the normal welding occurs. Then, when detecting the hole opening, an instruction for reducing a welding current is sent to a welding power source, or an electrode is separated from a workpiece by a drive unit for moving the electrode in the height direction. Accordingly, an incoming heat and an arc pressure are reduced, and a welding state is stabilized, thereby suppressing the lengthening of the opened hole and enabling the returning to a normal good welding state immediately after the occurrence of the hole opening. |
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Then, when detecting the hole opening, an instruction for reducing a welding current is sent to a welding power source, or an electrode is separated from a workpiece by a drive unit for moving the electrode in the height direction. Accordingly, an incoming heat and an arc pressure are reduced, and a welding state is stabilized, thereby suppressing the lengthening of the opened hole and enabling the returning to a normal good welding state immediately after the occurrence of the hole opening.</description><language>eng</language><subject>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</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140317&DB=EPODOC&CC=JP&NR=2014046316A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140317&DB=EPODOC&CC=JP&NR=2014046316A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKEYAMA TAKETOSHI</creatorcontrib><creatorcontrib>TAKENO YOSHIMIZU</creatorcontrib><creatorcontrib>YAGI YUJI</creatorcontrib><creatorcontrib>MONOTANE TAKESHI</creatorcontrib><creatorcontrib>HISHINUMA SHIZUYUKI</creatorcontrib><title>ARC WELDING METHOD, AND ARC WELDING APPARATUS</title><description>PROBLEM TO BE SOLVED: To solve such a problem that a molten state of a welded part becomes unstable when weld defects occur in arc-welding, so that it is difficult to return to a good normal welding state again, and particularly, an opened hole becomes greatly unstable in molten state, so that the returning to a good normal welding state again is more difficult and the hole tends to be lengthened.SOLUTION: A voltage during arc-welding is monitored all the time, and a hole opening is detected by detecting a moment when a deviation of a certain level or more from a specified value set based on data in the normal welding occurs. Then, when detecting the hole opening, an instruction for reducing a welding current is sent to a welding power source, or an electrode is separated from a workpiece by a drive unit for moving the electrode in the height direction. 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Then, when detecting the hole opening, an instruction for reducing a welding current is sent to a welding power source, or an electrode is separated from a workpiece by a drive unit for moving the electrode in the height direction. Accordingly, an incoming heat and an arc pressure are reduced, and a welding state is stabilized, thereby suppressing the lengthening of the opened hole and enabling the returning to a normal good welding state immediately after the occurrence of the hole opening.</abstract><oa>free_for_read</oa></addata></record> |
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| 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 |
| title | ARC WELDING METHOD, AND ARC WELDING APPARATUS |
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