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Will magnets cause arc blow?

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发表于 2021-8-31 23:32:00 | 显示全部楼层 |阅读模式
Understanding that magnetized steel can cause arc blow when using DC, does the use of the right-angle magnets similar to these to hold pieces together while tacking or welding cause arc blow?  Seems that the magnetic field created when those are used must be greater than, say, used oil field pipe or similar magnetized material. Attached Images
Reply:Yes they do screw with your arc   Try to tig weld next to one with low DC current On youtube watch The Story of Alternating Current Arc Welding - 1944About minute 3:00 they actually show it. Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Originally Posted by MinnesotaDaveYes they do screw with your arc   Try to tig weld next to one with low DC current On youtube watch The Story of Alternating Current Arc Welding - 1944About minute 3:00 they actually show it. Dave J.
Reply:You're probably right - little arc didn't have a chance My friend learned it by experience too.  Tried to tig right over where the magnet was.  No dice.Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:http://weldingweb.com/vbb/showthread.php?t=61966Here is a problem I had with magnets. Dan
Reply:You have the arc wander issue, which I haven't experienced, because when I tried to tig with magnets holding material, the filler was not very fun to manipulate.  Kept wandering toward the magnet.-AaronJet 17.5" Drill Press1942 South Bend 16x84 Lathe1980s Miller 320A / BP --- 2013 Power Mig 2562012 Jet 7x12 Horizontal BandsawVictor O/A Setup
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