Can arc welding weaken magnets ?

Roffe · Post by **Roffe** » Tue Jul 14, 2020 2:41 am

I am wondering about arc welding(DC) can hurt the magnets. I'm about to do a small repair on the frame close to the engine,
and would like to hear your opinion. Thanks.

Kerry · Post by **Kerry** » Tue Jul 14, 2020 3:23 am

Actually it would be around the other way, if welding to close to something that is magnetized, it stuffs up the weld, Called magnetic arc.

Roffe · Post by **Roffe** » Tue Jul 14, 2020 3:40 am

Thanks Frank. I've read about that phenomenon but its about 3 feet from the transmission so I don't think that will be a problem.
I am more concerned with the current flowing thru the frame/engine. But Im maybe overthinking the possible danger of demagnetising .

Kerry · Post by **Kerry** » Tue Jul 14, 2020 3:53 am

Just make sure that your earth clamp is next to your weld area and all will be good.

Roffe · Post by **Roffe** » Tue Jul 14, 2020 3:57 am

Thanks. Good advise.

Norman Kling · Post by **Norman Kling** » Tue Jul 14, 2020 10:59 am

I welded up a crack in the frame and put on a reinforcement right at the place where the crankcase ear is bolted to the frame. That was almost 30 years ago and the frame has not cracked again and the magneto still works.
Norm

Roffe · Post by **Roffe** » Tue Jul 14, 2020 5:19 pm

Norman, that's a relief to hear. Thank you.

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Can arc welding weaken magnets ?

Can arc welding weaken magnets ?

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