Posted by George Marsh on September 06, 2010 at 17:20:23 from (71.127.16.203):
In Reply to: How to demagnatize pipe posted by Texas Tradition on September 05, 2010 at 18:29:54:
Never demagnetized 4 inch pipe. I used to demonstrate to students how to demagnetize screwdrivers. You would place the screwdriver inside a coil of wire and connect the coil to ACV. Pull the screwdriver through the coil and it will scramble up the magnetic domains which is what it takes to demagnetized. To magnetize a screwdriver, connect dcv to the coil for a few seconds. The number of coils and the amps will determine how well this works. Of course, soft metals will not retain magnetism like harder metals do.
Just a brain storm here. What if you could put many wraps of insulated wire around the pipe and connect an AC welder to the wire. The longer the wire the better and of course the wire will have to handle the amps you feed it with the welder. Move the coil of wire down the length of the pipe. Don't see why this wouldn't work. LOL George
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