How to Magnetize and Demagnetize a Permanent Magnet

Magnets are items with poles and a magnetic field. This is due to the configuration of its electrons. There are three metals that are naturally magnetic; iron, nickel, and cobalt. These metals allow the electrons to configure in such a way that magnetic fields are created around them, and it is this magnetic field along with the poles of the magnet, that allow magnets to attract and repel. When two opposite poles are brought together, they will attract. But when the same poles are nearby their fields will repel each other.

But while we call these permanent magnet, there really is nothing permanent about the fields. All magnets can be demagnetized, and there are multiple ways to do that. Temporary magnets are items that are magnetic but do not keep their field as strongly. Items in this group include paper clips, scissors, refrigerators, staples, and various other items. These items are much more likely to lose their magnetic field than are permanent magnets.

There are a few ways to remove a magnetic field from a permanent magnet. One of these methods requires increasing the temperature of the magnet. Another way to make a magnet lose its magnetic field is by hitting it.

Magnetize and Demagnetize a Permanent Magnet

Magnetize and Demagnetize a Permanent Magnet

The Magnetizer/Demagnetizer is a useful tool that helps mechanics, electricians, and hobbyists to alternatively have magnetized or demagnetized tools. It’s important that electricians have demagnetized tools so that their tools do not magnetically attract to anything as they work on small hardware. Similarly, mechanics may need magnetized tools to attract screws and other fasteners. Rather than buying pre-magnetized tools at the hardware store, they can use this helpful magnet to magnetize or demagnetize any small steel tool already on-hand!

Simply run the tool through the “magnetize” side (open rectangle) and the steel tool will carry a temporary magnetism, allowing it to easily pick up and hang on to small screws and nails. The magnetism is not permanent and will eventually wear off, even without running it through the “demagnetize” side. This is because the steel is exposed to a magnetic field, which temporarily aligns the electrons, causing it to be magnetized. Eventually, the electrons will resume their original position.

It is sometimes necessary to switch between magnetized and demagnetized, which is where the other side of the tool comes in. Run the magnetized tool through the “demagnetize” side (indented opening) to quickly remove any magnetism. Running the magnetized tool through this end allows the previously aligned electrons to become interrupted, thus removing the magnetism.

The ease with which this product can be used lends to its appeal across multiple industries. In conjunction with its portability and functionality, it is decorated with a full color domed decal on either side. The product itself is magnetic and therefore can be placed on a toolbox, filing cabinet, or other ferrous surfaces.

NdFeB magnet is mainly made of Neodymium, Iron and Boron with excellent magnetic property, produced by powder metallurgical method with chemical composition of Nd2Fe14B, possesses high energy ranging from 26MGOe to 50 MGOe and wonderful coercive force, high resistance to demagnetization. This group of magnetic materials provides the highest available.

NdFeB magnet can be used as an ideal magnet in mini-motor, sensors, audio Speaker or Auto Parts etc. The surface treatment method include Zine, Nickel, Tin, Silver, Phosphor and Spray Epoxy Resin etc.

Poorest corrosion resistance of all commercial magnetic material.
Excellent cost to performance ratio and high resistance to demagnetization
Not suitable for application which exposed in high temperature conditions
No tooling charges require and small quantity available

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