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How to consider the specifications and types of magnets

When choosing NdFeB magnets, customers should choose the magnet trademark suitable for them according to their working temperature. If the working temperature is higher than the...

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Magnets can not only attract iron

Physicists believe that ferromagnetic materials like iron have many unmatched electrons inside. When an external magnetic field is applied to them, they will be "magnetized", and the manifestation of magnetization is that they can be attracted by a magnet.Magnets are the most common thing in our lives, but if we want to explain magnetism, general theories are not enough. Even if you call Newton, he may not be able to explain the cause of magnetic force in magnets. Only quantum mechanics can do it.We know that there are four fundamental forces in the universe, and electromagnetic force is one of them. Electromagnetic force can be decomposed into magnetic force and Coulomb force, both of which have the same goal. Magnetic force is a "Coulomb force" generated by moving charges.The fundamental component of all common substances is atoms, and the composition of atoms includes nuclei and electrons. Electrons move around atomic nuclei according to quantum mechanics, and they have fixed orbita

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2024-01

The difference between strong neodymium magnets and ordinary magnets

Strong neodymium magnets and ordinary magnets are two common types of magnets, and their differences mainly lie in material, magnetic force, and usage environment.Firstly, powerful neodymium magnets use alloy materials composed of rare earth elements such as neodymium, iron, and boron. This material has high magnetic force and stability, so it is widely used in various fields, such as mining, automotive, aerospace, wind power, military, home appliances, electric motor and generator industries, and so on. Compared to ordinary magnets, ordinary magnets mainly refer to iron oxide magnets, which have relatively weaker magnetic force and are not as stable as strong neodymium magnets.Secondly, the magnetic force of strong neodymium magnets is much higher than that of ordinary magnets. The magnetic force of strong neodymium magnets can often reach several thousand Gauss, while the magnetic force of ordinary magnets is usually only a few hundred Gauss. Therefore, strong neodymium magnets are m

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2024-01

the Magnetic Source of Magnets

The reason why a magnet has magnetic force is because its molecules have microscopic magnetism inside. Specifically, each atom in a magnet contains unpaired electrons, which carry a magnetic moment of their own, equivalent to a tiny magnetic field. Under normal circumstances, the magnetic moments of these electrons are oriented in different directions, so there will be no macroscopic magnetic field effects.However, in some cases, such as under the influence of a magnetic field, the magnetic moments of these electrons will interact with each other, resulting in their magnetic moments facing the same direction. When a magnet is exposed to an external magnetic field, the magnetic moments of these electrons interact with each other, causing the magnetic moments of the electrons in the entire magnet to face uniformly, resulting in a macroscopic magnetic field effect.The microscopic effect of electron magnetic moment in this magnet ultimately leads to the macroscopic magnetism of the magnet.

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2024-01

What objects can magnets attract?

As is well known, magnets are things that can adsorb iron substances, such as iron nails, iron keys, iron filings, etc. So besides these objects that are clearly composed of iron, what other objects can be attracted by iron?So first, we need to analyze the composition of the magnet. The components of the magnet are atoms such as iron, cobalt, nickel, etc. The internal structure of its atoms is relatively special, and it itself has a magnetic moment.So magnets can generate a magnetic field, but only a small portion of metals can be attracted by magnets, such as iron, nickel, cobalt, and other magnetic loving metals.Most other metals are not attracted, such as gold, silver, copper, aluminum, tin, lead, titanium, and so on.Of course, in addition to attracting metals, there are also some objects that exhibit diamagnetism and paramagnetism.Demagnetism: Demagnetism is a magnetic phenomenon that occurs when a substance is subjected to an external magnetic field, resulting in a weak repulsive

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2024-01

How is a magnet made

A magnet is a substance made of iron and magnetic materials, which has the properties of attraction and repulsion. In the process of making a magnet, several steps are required.Firstly, it is necessary to choose suitable iron materials. Pure iron or low-carbon steel is usually used. These materials will become magnetic materials after magnetization treatment.Next, it is necessary to process and cut these materials. This process involves heating the iron block in the furnace and then performing operations such as forging, cutting, and polishing. These steps are all aimed at transforming the iron block into the desired shape and size.Then, magnetization treatment is required. This process needs to be carried out in a strong magnetic field in order to turn the iron block into a magnetic material. This step can be achieved by using an energized coil or electromagnet.Finally, surface treatment is required. This step includes applying insulation paint or coating treatment to the surface of t

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2024-01

The Wonderful Road to Magnet Making

1、 The Origin of MagnetsFirstly, let's learn about the origin of magnets. Magnets are materials with permanent magnetism, and the earliest magnets were obtained from nature, such as magnetite ore. However, modern magnet production not only relies on natural resources, but also undergoes scientific precision processing and improvement.2、 The production of ferrite magnetsOne of the most common magnets is ferrite magnets, which are usually made of iron oxide and other metal oxides. The process of making ferrite magnets includes the following steps:1. Material preparation:Firstly, the production of magnets requires the preparation of raw materials, including iron powder, iron oxide powder, and other metal oxide powders. These powders are the main components for preparing magnets. Usually, iron powder is used as the foundation for magnetic materials, while iron oxide and other metal oxides are used to enhance magnetism.2. Mixing:The raw material powder needs to be mixed together to ensu

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2024-01
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