Methods of Magnetization

Many of our customers who are new to the world of magnets may have such questions: what’s magnetization and what are the methods of magnetization? In this article, we’ll take a look at magnetization and the methods of magnetization and try to answer the above questions.

What’s magnetization?

Magnetization refers to magnetizing a magnetic substance or increasing the magnetism of a magnet with insufficient magnetism. Generally, the magnetic object to be magnetized is placed in the magnetic field formed by the coil through which the direct current passes.

The magnetization direction can be divided into thickness magnetization, radial magnetization, and so on. When the magnet is heated or impacted, the magnetic pitch direction of the magnetic domains in it will become inconsistent, and the magnetism will be weakened or disappeared. To retain the original properties, magnetization is required.

Methods of Magnetization

1. Constant current magnetization (low-voltage large-capacity capacitor discharge), suitable for magnets with low coercivity, such as ferrite magnets.

2. Pulse magnetization (discharge of high-voltage small-capacity capacitors), suitable for magnets with high coercivity, such as neodymium magnets.

Working Principles

1. Constant Current Magnetizing Machine

Working principle: a constant current of direct current is passed through the coil to make the coil generate a constant magnetic field. It is suitable for magnetizing low-coercivity permanent magnets.

2. Pulse Magnetizing Machine

Working principle: the instantaneous pulsed current is passed through the coil to make the coil generate a short super-strong magnetic field. 

It is suitable for high coercivity permanent magnets or complex multi-pole magnetization occasions. It is widely used in permanent magnet material production and application enterprises, suitable for the magnetization of various types of permanent magnets, such as AlNiCo magnets, ferrite magnets, rare earth permanent magnets, etc. It has the characteristics of high efficiency and reliability. The equipment has no special requirements for the power configuration of the work site, and it is convenient and flexible to use.

Conclusion 

Thank you for reading our article and hope it can help you to have a better understanding of magnetization and the methods of magnetization. If you want to learn more about magnets, we would like to advise you to visit Stanford Magnets for more information.

As a leading magnet supplier across the world, Stanford Magnets has been involved in R&D, manufacturing, and sales of magnets since the 1990s. It provides customers with high-quality permanent magnets like SmCo magnets, neodymium magnets, AlNiCo magnets, and ferrite magnets (ceramic magnets) at a very competitive price.