How We Magnetize Magnets | Apex Magnets Blog

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How We Magnetize Magnets Oftentimes magnets are not actually magnetic when they are in the early stages of production. In fact, magnetization is one of the last steps in the magnet-making process. Magnets that are created from rare earth elements like neodymium, are first mined, melted, milled, pressed and sintered before their magnetic energy is ever activated. During pressing the particles in the magnets are aligned, giving them a designated direction or pole. However, it is during magnetization that the magnets are given their magnetism. Until then, these demagnetized magnets can be referred to as slugs. In order to make these slugs magnetic, we must activate their magnetic properties, which is done through a device called a magnetizer. The magnetizer is equipped with a coil wire and an electric current, which when turned on, emits an external magnetic field and activates the magnetism in the slugs. There are two common methods of magnetization:

• Static magnetization- is generally creates smaller magnetic fields.
• Pulse magnetization- is generally used for a stronger magnetization.

The method of magnetization is determined based on several magnet characteristics like material, strength and shape. Sometimes, manufacturers and others that handle magnets in an industry setting, may want magnets without magnetization. Some examples of where magnet slugs has been useful include:

• Shipping: During shipment, if a high powered magnet is active, it could potentially damage other items or interfere with navigation technology.
• Manufacturing: When building certain electronics that use a magnet, it can be difficult to assemble the pieces with an active magnet.

One may think that magnets are just naturally magnetic, but it is interesting to discover that today’s magnets are carefully and professionally designed-from coatings and shape to their magnetic properties. To see firsthand how magnet slugs are magnetized, check out our video here. Categories: Magnet Facts & Neodymium Magnet Information Tags: high powered magnets & information about magnets Posted On: August 29 2014 Posted By: admin Get a Quote for Customer Name Customer Email Phone Number Comment Submit Copyright © 2025 Apex Magnets. All rights reserved.