Introduction to NdFeB magnets used in teaching stationery magnets
Pubdate: 2019-12-31 09:19 pageviews:
Permanent magnet neodymium iron boron (NdFeB) is the strongest permanent magnet in contemporary magnets. It not only has high remanence, high coercive force, high magnetic energy product, high performance price ratio, etc., but also easy to process into various sizes. Has been widely used in craft gifts, luggage and stationery, bags, leather goods, paper packaging products, decorative boxes, toys, electronic accessories, aviation, aerospace, electronics, electro-acoustics, electromechanical, instruments, meters, antennas, etc., medical technology and other needs Among the devices of the magnetic field device, it is particularly suitable for the development of various high-performance, miniaturized, and lightweight products.
The process of NdFeB magnet: batching → melting ingot → powder making → pressing → sintering and tempering → magnetic testing → grinding processing → pin cutting processing → electroplating → finished product, where the ingredients are the basis, and sintering and tempering are the key.
NdFeB is currently the magnet with the highest commercial performance found. It is called the king of magnets. It has extremely high magnetic properties and its maximum magnetic energy product (BHmax) is more than 10 times higher than ferrite. It is also commonly known as: strong magnetism, magnetic steel, etc. Its own machinability is also quite good. The maximum operating temperature is 200 degrees Celsius. And its texture is hard, its performance is stable, and it has a very good price-performance ratio, so its application is extremely extensive. But because of its strong chemical activity, its surface must be treated.
Richeng Magnetic Industry produces various types of neodymium-iron-boron magnets and various magnet tools that have been processed by neodymium-iron-boron magnets, such as teaching stationery magnets. Teaching magnets are mainly used for teaching experiments and demonstrations. , Middle school physics experiments) teaching tools. It can also be used for student stationery, children's toys, etc. It can not only allow students to intuitively feel the real existence and changes of magnetic fields, but also to vividly express their physical characteristics in specific images, and to mobilize students' study interest and focus To stimulate their thinking and imagination. This will greatly help the primary and middle school students and children to understand and understand the magnetic field. The magnetic field is beneficial to the human body, and the child can also use the N of the magnet; the S pole repels the Earth ’s magnetic field with the same sex, and the opposite sex attracts the principle to make the magnet a compass. Can make students intuitively feel the existence of magnetic field, the nature of magnets --- same-sex repulsion, opposite-sex attraction. It can mobilize students' learning initiative, create a good learning atmosphere, and thus greatly improve the quality of teaching! Magnets can provide constant Magnetic field is an indispensable auxiliary equipment for physical electromagnetics! In order to fully mobilize and explore the creative potential of children, develop a good attitude of inertia learning that is diligent in thinking and willing to study!
