Welding magnetic piping
Welding magnetic piping
(OP)
Does anyone have any tips on how to weld a magnetized pipe. The tools used to monitor the piping has magnetized it. I cannot weld on the body of the pipe to connect them with a bar. The first bead would blow out until it finally got enough in between it to neutralize the magnetization. This unfortunately causes a huge mess which has to be ground off and it takes forever to do. So if anyone knows how to de-magnetize the pipe or anything to make welding it easier I would appreciate it.





RE: Welding magnetic piping
I hope the geometry of the pipe allows at least a few turns of wire.
RE: Welding magnetic piping
RE: Welding magnetic piping
RE: Welding magnetic piping
Wrap as many turns as you can on the outer diameter of the pipe.
Run as many amps of current as you can, without burning out the wire.
It doesn't matter which lead is positive/negative, you'll be magnetizing the pipe north/south multiple times, eventually bringing it down to zero.
You should use DC current, but you need to have a way to vary it and (most importantly) a way to reverse its polarity.
The current should reverse (and decrease in strength) every few seconds.
RE: Welding magnetic piping
You might try use of a keeper to reduce the field in the gap. It works pretty good.