dispersing magnetic flux

[glen]

Hello

I'm not sure I'm in the right forum?

I'm looking for information on how to spread the force of several (5-10) neodymium magnets?

Specifically: I wish to embed the magnets in a small concrete cone but disperse the magnetic attraction (flux?) at the surface as evenly as possible through out the surface?

Or: to find a source of smaller magnets and disperse them evenly throughout the surface of the concrete?

[Joit]

Hi.
I dont think, you can change afterwards a lot at Magnets.
They are melted and magnetized, and then they have her Fields, so you only can align them good as you can, but the Field will allways stay around the Center from the Steel/Iron/Neodym.
You may can shild them also with Ironsheets or other Metall, but its maybe only more a emergency solution.

[glen]

dispersing magnetic flux

I think you misunderstand the question; I know that magnets can be focused...I have one out of an old speaker that has iron (steel) parts that make it a lot stronger on one side than the other and even stronger in the center(?)


I thought that if I placed the magnets on a fine steel screen that it might disperse the flux... so rather than having several localized magnetic fields I could have one broad more uniform one???

[Inquorate]

it'll probably work, only one way to find out; start doing experiments. Search Youtube for 'magnetic shielding' - i'm sure you could modify that.... However, it'll probably kill 90% of the magnetic field's strength.

[Joit]

I think you misunderstand the question; I know that magnets can be focused...I have one out of an old speaker that has iron (steel) parts that make it a lot stronger on one side than the other and even stronger in the center(?)


I thought that if I placed the magnets on a fine steel screen that it might disperse the flux... so rather than having several localized magnetic fields I could have one broad more uniform one???

Yes i think i do missunderstand your Question, because i cant figure out, what you want exactly.

This Phenomena from the Speaker Magnet i did see also lately, a Magnet with a Hole in the Middle even turns the Poles inside.
The one i got is a bigger one, at the middle from the Hole is a Iron Core, on
both sides from the Thing is a Ironsheet, only the one side is connected with the Iron core,
and therefor it concentrate the Forces into the Core.
But its some difficult to redirect Flux, when you take a plain Sheet like _______
the magentism will appear at the borders from the Sheet, lesser at the Surface.

Now when you take a lot single Magnets, and hold them together with only the same Pole, they will repell, and you may have to press them together, that you get a continously Surface. When they are to far apart, the other Pole will shine through between ie the N Pole.

The different for a melted and made-in-one Pice big Magnet is there, that it keeps together, so far it dont breaks.
The Idea i had was, that you place ie iron rings around stickmagnets, that it shields the sides, but the top side can still radiate magnetism

[Harvey]

Hello

I'm not sure I'm in the right forum?

I'm looking for information on how to spread the force of several (5-10) neodymium magnets?

Specifically: I wish to embed the magnets in a small concrete cone but disperse the magnetic attraction (flux?) at the surface as evenly as possible through out the surface?

Or: to find a source of smaller magnets and disperse them evenly throughout the surface of the concrete?

Hi Glen,

If you wish to embed several strong magnets in your material and have the flux relatively evenly dispersed along the conical surface, then you need to use a flux distribution network.

The first thing you need to determine is how you want your poles to be physically positioned and then work from there. Remember, the flux that penetrates the conical surface will be looking to return to the opposite pole.

Let's say that you have a very permeable core in the middle of your concrete, say made of soft iron and it too has a conical shape. So now you stick some magnets to that and they all are equally distributed along the surface of the cone, but the flux wants to return back between the magnets. To get around this, we can use a pathway bundle from each magnet.

Imagine thin pathways arranged like these:


From each magnet out to the conical surface. You would need a good material like HyMu-80 wire properly arranged in fanning bundles to go from the magnet to the surface. Each strand would be separated at equal distances from each other. This gives a relatively uniform field along the conical path with the flux routing back to the base of the internal iron cone.