Can one re magnetize a magnet?

Answer 1

Yes, a magnet can be ridden of it's magnetic properties by either using it to pick up iron filings or heating it up and rubbing it on another magnet. This is called demagnetizing. On the other hand, magnets can be re-magnetized by heating and holding the south end of a magnet on one end and the north side of another magnet on the opposite end although the magnet will not be as strong as before.

Answer 2

If you mean "Can I weld the edges of a magnet?" then the answer is no, at least not usually, because the composition of the magnet won't weld. For really cheap magnets, you may be able to weld them, but you will lose the magnetism if you do.

If you mean, "Can I weld near a magnet?" then the answer is yes... sort of. If you are close to the magnet, you can heat it up enough to cause it to lose its magnetism. If you are arc welding, and using AC, you could possibly demagnetize the area closest to the arc If you're using DC, and the polarity is such that it opposes the magnetic flux, you could potentially demagnetize part or all of the magnet. This would depend on the strength of the magnetic field made by the arc, and how close you are to the magnet. Some types (like really inexpensive alnico magnets) are weak to begin with and easy to demagnetize, but some of the newer ceramic magnets are extremely hard to hurt, except by breaking them. By the way, some ceramic magnets are quite sensitive to temperature differences, so if you heat one side with a torch or arc welder, they may crack.

Answer 3

Theoretically yes.

In practice, many materials magnets are made of are rather brittle and tend to break rather than bend. Bending a magnet may also weaken its magnetic field, due to disruption of the crystalline structure of its atoms.

Answer 4

You can heat all metal, so yes, you can heat magnets. It might throw off its polarity, though.

Answer 5

I don't think so because the definition of magnetize it to magnetize and a magnet is already magnetized.

Answer 6

I tried welding near a magnet,and had no luck.

Answer 7

Yes, it can be done with electricity, run through a coil

Answer 8

I would think that if you have the proper device you would be able to re-magnetize the magnets.

Answer 9

With two shakes of a stick, salt water, elbow grease and spray bottle.

Any questions call 310.780.2174.