Magnetized steel pipe?

[Flux Core joe]

Hi guys i have a professional welder friend in Texas who has been welding on magnetized drill pipe that is rusted pretty good and i was wondering what opinions do ya'll have about it? im just curious

[Northweldor]

Hi guys i have a professional welder friend in Texas who has been welding on magnetized drill pipe that is rusted pretty good and i was wondering what opinions do ya'll have about it? im just curious

Drill stem or sucker rod is often magnetized, frequently to the point where it will pick up small objects. This can cause problems welding with DC, so the usual easy fix is to use AC, where the magnetism has little effect. Also, shifting your ground, or wrapping your cables to counter the magnetic field, sometimes works, if AC is not available.

[toolaholic]

How does the pipe get Magnetized ?

[Northweldor]

How does the pipe get Magnetized ?

Through long periods of continuous motion in one direction, and the resulting friction. Often strong enough that a 12" Crescent will stick anywhere on a length.