- #1
akashverma
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thickness of steel plate required to stop interaction between 3' dia neodymium magnet
Thickness of steel required for shielding magnetic field
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Discussion Overview
The discussion revolves around the thickness of steel required to shield a 3-inch diameter neodymium magnet from magnetic interactions. Participants explore the effectiveness of different types of steel as shielding materials and the factors influencing the required thickness.
Discussion Character
- Debate/contested
- Technical explanation
- Conceptual clarification
Main Points Raised
- Some participants question the feasibility of completely shielding one magnet from another, suggesting that shielding can redirect magnetic fields rather than eliminate them.
- There is a consensus that the effectiveness of shielding depends on the grade of steel used and its ability to avoid saturation, which varies with the strength of the magnet.
- Participants note that the type of steel is crucial, as many types, especially stainless steel, are nearly non-magnetic and may not effectively influence the magnetic field.
- One participant mentions that the thickness of the shielding material is influenced by factors such as magnetic field strength, frequency, and material permeability.
- Another participant emphasizes that even with shielding, the magnet will still exert force on nearby materials, indicating that complete isolation is not achievable.
- Some participants express uncertainty about the specific requirements for shielding and suggest that more detailed questions could lead to better insights.
Areas of Agreement / Disagreement
Participants generally agree that complete shielding is not possible and that various factors influence the effectiveness of the shielding material. However, there is no consensus on the specific thickness required or the best type of steel to use.
Contextual Notes
Limitations include the lack of specification regarding the type of steel and the absence of detailed calculations or empirical data to support claims about thickness and effectiveness.
- #2
Simon Bridge
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I don't think you can shield one magnet from another one... you didn't say what the shielding would be "between".
The shielding effect depends on the grade of steel... you need enough that it won't saturate, so how much you'd need also depends on the strength of the magnet.
The shielding effect depends on the grade of steel... you need enough that it won't saturate, so how much you'd need also depends on the strength of the magnet.
- #3
Vanadium 50
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Three feet diameter neodymium magnets?
- #4
akashverma
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I'm sorry,that was a mistake its 3 inch diaVanadium 50 said:
- #5
akashverma
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You can't cancel magnetic field but can redirect it which effects the interaction between magnets or other materials.Simon Bridge said:
Yes, thickness of shielding material depends on various factors which includes magnetic field strength, its Frequency and material permeability.
- #6
Vanadium 50
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Even 3" is very big.
You're not going to ever completely stop the interaction. If you put up a piece of iron, the magnet will still feel the force from the iron.
You're not going to ever completely stop the interaction. If you put up a piece of iron, the magnet will still feel the force from the iron.
- #7
akashverma
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I got my answer.
Thanks for your involvement.
Thanks for your involvement.
- #8
SACHIN M
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akashverma said:
What is the answer?
- #9
akashverma
- 34
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Well It depends on your question.SACHIN M said:
I just posted that question to get an insight of some other problem.
If you can elaborate your question then maybe I can help you.
- #10
f95toli
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"Steel" is not a well specified material. There are lots and lots of different types, and many are almost completely non-magnetic (this is especially true for stainless steel); i.e. the steel won't affect the magnetic field at all (this is why you can build e.g. NMR and MRI machines out of steel). Iron is of course ferromagnetic, but pure iron is not actually used that often.
Hence, in order to be able to be able to start to answer the question you need to specify the type of steel used.
Hence, in order to be able to be able to start to answer the question you need to specify the type of steel used.
- #11
akashverma
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Plain Carbon Steelf95toli said:
- #12
Malverin
- 139
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You can not shield them completely.
How thickness affects shielding is shown here
https://www.kjmagnetics.com/blog.asp?p=shielding-materials
How thickness affects shielding is shown here
https://www.kjmagnetics.com/blog.asp?p=shielding-materials
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