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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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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

08

2024-01

Changes in magnetic field iron

Why can some substances be adsorbed by magnets? Here we use the most common example - iron to illustrate. Iron is a metallic element that belongs to ferromagnetic materials, characterized by strong reactions to external magnetic fields. When there is no external magnetic field, the arrangement of atoms in iron is relatively chaotic, with many small magnetic dipoles generated by electron spins and orbital movements in different directions around each atom. These small magnetic dipoles cancel out each other or are randomly distributed, resulting in an overall lack of significant net magnetism.When there is an external magnetic field, the situation is different. An external magnetic field will apply a force or torque to the small magnetic dipoles inside the iron, causing them to tend to align with the direction of the external magnetic field. In this way, small magnetic dipoles that were originally disorganized or had different directions will be arranged into an ordered structure, which

03

2024-01

How magnets generate magnetic fields

A magnet is a special substance that can generate an invisible force field around it, which we call a magnetic field. A magnetic field can be represented by a virtual line called a magnetic field line, which starts from one end of the magnet and ends at the other end, forming a closed loop. If we place a small compass in a magnetic field, it will point along the direction of the magnetic field lines. If we bring two magnets closer, they will arrange their magnetic poles according to the law of opposite attracting and same repelling each other.How does a magnet generate a magnetic field? To answer this question, we need to enter the microscopic world and look at the atoms and electrons inside the magnet. Atoms are the fundamental units of matter, composed of atomic nuclei and electrons. An atomic nucleus is composed of protons and neutrons, and it carries a positive charge. Electrons are small, light particles that carry negative charges and move around atomic nuclei. Charge is a fundam

03

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

03

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

03

2024-01

How are sintered neodymium iron boron magnets classified?

Do you know that sintered neodymium iron boron magnets are evaluated based on the maximum magnetic energy product. Take a look at our neodymium magnet specifications page and you will find a rule that the maximum value of grade N35 (BH) is 33-36MGOe in the middle. Therefore, higher values indicate stronger magnets, ranging from N35 to N55.The letter after the number represents the maximum operating temperature (usually in Celsius), ranging from M (100 ℃), H (120 ℃), SH (150 ℃), UH (180 ℃), EH200 ℃) to AH (220 ℃). If there is no letter like N42 after it, the maximum operating temperature is 80 ℃.

03

2024-01
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