Neodymium Magnets

Neodymium magnets are high-precision magnets, depending on the space in which we are going to use them and the sector in which we are going to apply them, we can find different sizes and grades. Neodymium magnets are created under a casting process, which is why we can find them in various forms.

Since the neodymium magnet is manufactured by sintering, this allows us a great variety of designs and shapes, for example: round, rectangular, square, and long...

Neodymium magnets or powerful magnets are permanent magnets with the highest strength and high coercivity. It is the strongest magnet on the market and the most widely used in the industrial sector.

The production of neodymium magnets has a low resistance to corrosion so it has a protection or coating to ensure the maintenance and durability of the magnet over time, this coating will prevent it from losing its properties and being affected by corrosion and external chemical agents.

The coating of the neodymium magnet can be epoxy, nickel, zinc, copper, and others. Below, we can see a table of neodymium magnet qualities in which we find the remanence, the coercive force, the working temperature, and the minimum and maximum resistance of each type of neodymium quality.

Most neodymium magnets, due to their high remanence and coercivity, mentioned above, can be used in the electronics sector.

Neodymium magnets or strong magnets have a high density and a degree of magnetisation of 5,000 gauss and 52 MGOe. The higher the grade, the more magnetisation the magnet will have, as it is made of neodymium magnets, the letter in the grade is an N. Neodymium magnets have a degree of magnetisation that can vary from N27 to N52. Neodymium magnets have a higher price than ferrite magnets because of the complexity of obtaining their raw material.

All neodymium magnets are anisotropic and therefore only can magnetise in one direction. The magnetisation of square neodymium magnets is diametrically magnetised.

Due to their strong magnetic properties, neodymium magnets can be used for a large number of applications, thanks to their high magnetising force.

In our daily lives, we can find neodymium magnets in door locks, making the function of allowing the opening and closing of fire doors. Also, one of the major applications that is currently booming is electric cars, more specifically in motors and generators, neodymium magnets are responsible for transforming electrical energy into mechanical energy.

Neodymium magnets go through different stages until reaching the final product:

1. The raw materials are introduced in a mold where they are later melted and distributed in molds so that later they are given a solid form when they cool.
2. Then, a very fine octopus is created, from the previous physical form that goes through the sintering phase, passing to the liquid state. In the sintering phase, the particles align and fall together to create dense pieces.
3. These pieces finally obtained are in the form and the size we want.
4. Finally, the neodymium magnet is magnetized and the magnet that we all know is made.

Once we have finished following all these steps, a certificate of quality must be issued to ensure that the neodymium magnet has been manufactured correctly.