Magnetization Methods - Part 2

This is the second part which covers radial ring magnetization as well as other ways to magnetize neo magnets.

Category:

Science & Technology

Tags:

• science
• physics
• magnets
• supermagnets
• engineering

[dan020350]

thanks for teaching :)

[SuperMagnetMan]

You are definitely welcome! Thanks for watching.

[spodfi]

Hey George - great informative videos! I'm interested in the material that you mention being machined away in this article. I'm wondering if this Neo could be powdered and set into epoxy resin between layers of carbon fibre - the powdered material would then be aligned by a magnetising field into whichever orientation was desired before the epoxy hardened. Is it possible to buy magnetised Neodymium powder from you?

[SuperMagnetMan]

Spodfi

There are neo molded magnets that are not sintered but bonded together with an epoxy and they are much more machinable. They are still not able to be magnetized except in one direction. I can find out about making a composite out of carbon fibre if you want.

[SuperMagnetMan]

You're welcome. I am working on several more. Keep watching:)

[SuperMagnetMan]

Actually we try to arrange the large magnets in the center of a box that gives us 2 or 3 inches distance before we get to the shielding material. The greater the distance from the magnet to the steel, the greater the reduction. Some of our largest magents like several 6"x4"x2" ceramic magnets in the same box we have to use 2 layers of shielding with a 0.75 inch thick piece of styrofoam in between the layers. The next video is on shielding:).

Thanks

[mump0op0o]

why am i watching this video?

[angryfishmonger]

This question is very general and I do not expect any exact answer but I want to get an idea of how much of an improvement in efficiency one could expect if for example, you used very good magnets in place of old magnets in a motorcycle generator. The motorcycle was made in the 80's and I suspect that you have magnets that are much more powerful and would have an effect on the performance of the generator. Again this is all hypothetical as there are too many variables to quantify,

[dan020350]

About multi polar or the 8 pole magnet, can you give me an example how it is being used today, and where can i buy one ?

[TeamDarkMatter]

geez, i need some of those radial neo magnets.

[digioverlord]

man you gotta love magnatisim!

[RyuDarragh]

This is exploting the Curie Effect. Tc. At a particular temperature, the superconducting loops on the crystal grains go high resistance. If the magnet to be is cooled in the prescence of a magnetic field, the cooper pairs trapped in the superconducting loops on the crystal grains will line up as soon as the material cools below the Tc. You'd have to repeat the Curie Effect all over again to change it, but the crystal domains have been deformed by the initial magnetization, so it would be weaker,

[spodfi]

Basically, I'm looking for a way to make a multipole Halbach cylinder for an electromechanical (flywheel) battery. I could assemble this out of segments, but obviously this only an approximation of the 'ideal' Halbach configuration - it's also not that structurally stable at high RPM! So I thought I could make a helically wound rotor from carbon fibre with neo/epoxy filler and "set" the magnetic character using a strong field while the layers are drying. I need to find fine grain Neo powder!