How to Separate Strong Magnets

separate strong magnets

Many people want to find a way to separate the magnets from an old hard disk due to the strong magnetic force among permanent magnets.

Well, how to merge and separate strong magnets?

It is a big and serious problem while people working with them.
The strong magnet is NdFeB magnet. Compared with ferrite magnets, AlNiCo, and SmCo magnets, Nd-Fe-B magnets can absorb 640 times weight of their own, so neodymium magnets are often called powerful magnets by outsiders.

The role of powerful magnets:

1. refers to the north and the South

2. attract small objects

3. electromagnet can be used as an electromagnetic relay.

4. motor

5. generator

6. electroacoustics

7. magnetic therapy

8. magnetic levitation

9. nuclear magnetic resonance

In daily life, strong magnets should be placed away from easily magnetized items, such as floppy disks, credit cards, computer monitors, watches, mobile phones, medical devices, etc. The magnet should be far away from the pacemaker. For larger size magnets, plastic or cardboard gaskets should be added between each piece to ensure that the magnets can be easily separated. Magnets should be stored in a dry and constant temperature environment.

Sintered neodymium magnets, even with small sizes, have the very strong magnetic force that will surprise you definitely. Permanent magnets belong to the dangerous object; when you handle them:
1. You should get some magnet safety-danger tips.
2. Do some clean-ups in the workplace to keep iron items away.
3. Prepare some tools like work glove, safety glasses, and woodblock, the wood block is a good spacer for big strong magnets.
4.Although demagnetizer is a way to separate magnets. But it will lose magnetic force. So it is very important to know the principle of separating magnets as below picture:

separate strong magnets

Due to the long shape of neodymium cylinder magnets to let you have the area to grab, you can separate two small cylinder magnets by hand. But for small thin neodymium disc magnets or other very big strong magnets, the first method is the right way. Here are the reasons:
1. Seek leverage from another object such as desk and/or find a better way to grab the magnets
2. Separate magnets apart parallel, which requires less force.

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Author: Maria Higgins

Welcome! I am a Standford Magnets engineer with over 10 years dedication to the R&D of licensed Rare-earth permanent magnets, Neodymium magnets and SmCo magnets, ceramic magnets, flexible magnets and magnetic assemblies since the mid of the 1980s. I shall keep you well informed of the leading-edge knowledge in the Magnets world.

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