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02-07
/ 2025
The measuring tool for magnetic fields usually uses a Gaussian meter, also known as a Tesla meter. The following figure shows the widely used Japanese KANETEC Gaussian meter.
01-21
/ 2025
In recent years, the magnet industry has shown a rapid development trend worldwide, with technological advancements, widespread applications, and sustained market demand making it an important component of the industrial and technological fields.
01-17
/ 2025
In the field of electromagnetics, in addition to using the general SI international system units, CGS Gaussian system units are also used. This sometimes requires unit conversion for friends who come into contact with magnetic materials, and the conversion calculation between these two unit systems is very complex. For the convenience of everyone, we have systematically summarized the units in electromagnetics and the conversion relationships between different unit systems. You are welcome to collect them for future reference.
01-15
/ 2025
The generation of magnetic fields can be divided into two aspects: one is based on the motion current (electromagnetic induction), and the other is based on the spin of the fundamental particles that make up matter. The first type is the magnetic effect of electric current, which is familiar to us. After a wire is electrified, free electrons move in a directional manner to generate a magnetic field. The second type is the magnetic field generated by the substance itself, which is the main topic we will introduce today.
01-10
/ 2025
At present, most mainstream permanent magnet brushless motors use surface mounted or embedded magnetic tiles to form a circular magnetic circuit. However, the splicing magnetic ring has disadvantages such as high precision requirements for magnetic tile processing, difficult assembly, poor smooth transition of magnetic poles, and severe motor noise. Moreover, this structure requires a frame structure made of soft magnetic materials to fix the magnetic tiles, which affects assembly efficiency.
01-08
/ 2025
In recent years, the price fluctuations of rare earth raw materials such as praseodymium neodymium have been significant, causing great difficulties and constraints in terms of cost for neodymium iron boron production enterprises and end application enterprises. Cerium Ce and praseodymium neodymium PrNd, both rare earth elements, have similar structural characteristics and are extremely abundant in the Earth's crust. When used in neodymium iron boron magnets to replace Pr and Nd, it can not only effectively achieve the balanced utilization of rare earth resources, but also significantly reduce the production cost of sintered neodymium iron boron. At present, almost all neodymium iron boron production enterprises in China have been involved in the development and production of cerium magnets. The annual output of new cerium magnets has reached about 50000 tons, and the scale is constantly expanding.
01-05
/ 2025
The application of magnets is often based on the principle of repulsion between the same poles and attraction between opposite poles, or the adsorption of ferromagnetic substances by magnets, such as various magnetic attraction devices, magnetic connection structures, magnetic separation equipment, magnetic transmission equipment, etc.
01-03
/ 2025
The usage scenarios of neodymium iron boron permanent magnets can be roughly divided into adsorption, repulsion, induction, electromagnetic conversion, etc. The requirements for magnetic fields vary in different application scenarios.
12-30
/ 2024
The rusting of magnets is a complex process that involves multiple factors. The following are the main reasons for magnet rust:
12-25
/ 2024
MagSafe is a magnetic connection technology developed by Apple and first applied to MacBook laptops in 2006. Its core is to use the magnetic attraction to achieve fast and stable connection between devices and accessories
MagSafe technology has been further developed on the iPhone 12 series, becoming a magnetic wireless charging solution that not only improves the efficiency of wireless charging, but also expands the usage scenarios of accessories
Below, we will provide a detailed analysis of the working principle of MagSafe and its relationship with magnets.
12-23
/ 2024
Hall element is a magnetic sensor based on the Hall effect, which can detect magnetic fields and their changes, and can be used in various magnetic field related situations. Hall elements have many advantages, such as sturdy structure, small size, light weight, long lifespan, easy installation, low power consumption, high frequency (up to 1MHz), vibration resistance, and resistance to pollution or corrosion from dust, oil, water vapor, and salt spray. Hall elements have a wide range of applications, such as signal sensors in automotive power distribution systems, speed sensors in ABS systems, speedometers and odometers, liquid physical quantity detectors, current detection and working status diagnosis of various electrical loads, engine speed and crankshaft angle sensors, various switches, and so on.
12-18
/ 2024
Before the invention of rare earth permanent magnet materials in the 1970s, AlNiCo aluminum nickel cobalt alloy had always been the strongest permanent magnet material in terms of magnetic properties. However, due to the strategic metals cobalt and nickel in its composition, the cost was relatively high. With the successive emergence of ferrite permanent magnets and rare earth permanent magnets, aluminum nickel cobalt materials were gradually replaced in many applications. However, in some high-temperature applications and situations where high magnetic stability is required, AlNiCo magnets still occupy an unshakable position.