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Hefei Super Electronics Co. Ltd---A Professional Permanent Magnets&Magnetic Assemblies Manufacturer since 2002.
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About us

Hefei Super Electronics Co. Ltd engaged in permanent magnets area since 2002,which is over 20 years

Our company is specialized in manufacturing various types of magnetic materials and magnetic products.The main products are Neodymium magnets, Rubber magnets,Ferrite magnets,Magnetic toys,Fishing magnets and so on .

We always make great efforts to achieve this win-win situation and sincerely welcome you to cooperate with us  and expect your inquiry!

  • 100
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    EMPLOYES

  • 100
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    COUNTRIES

  • 8000
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    square meter

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Our certificate
  • 100% Customer Satisfaction
  • 300+ customers all over the world
  • Technical support
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Hot products
Customized sizes and shapes ,Competive price, Fast shipping and Best Quality
Latest news
We will not only update our company daily news but also event notices.
Different types of magnetic fields

     The core of a magnetic field is the area around a magnet where magnetic forces are exerted. Magnetic fields are usually generated both through magnetic materials and through moving electric charges. Magnetic fields are invisible but can be detected using certain tools and materials. For example, in strong neodymium magnet materials, the magnetic field is generated by the arrangement of the magnetic moments of electrons within the material and is an inherent property of substances such as iron, nickel and cobalt.    Common magnetic field applications in life        1. Magnetic cards and magnetic strips: Commonly used magnetic cards such as bank cards, credit cards, access control cards, etc. all contain magnetic strips. These magnetic strips contain specific magnetic field codes used to store and read data.        2. Speaker: The speaker generates vibration in the magnetic field through electric current, thereby producing sound. They are widely used in audio systems, televisions, computers and other equipment.        3. Electronic devices: Storage devices such as hard drives and magnetic tapes use magnetic fields to read and write data, and are widely used in computers and data storage.        4. Motors and generators: Motors and generators are devices that convert electrical energy into mechanical energy using magnetic fields generated by custom curved neodymium magnets. Widely used in power tools, household appliances, transportation and other fields.        5. Magnetic Resonance Imaging (MRI): MRI uses powerful magnetic fields and harmless radio waves to produce detailed images of the inside of the body, which is important for diagnosis and medical research.          Magnetic fields are not just theoretical or used in advanced science. They are used in many aspects of modern life.        Different magnetic fields of magnets        1. Magnetic field of independent neodymium magnet in free space        For a custom strong ndfeb magnet in an independent space, the magnetic field is generated by two polarities (north and south poles) and forms magnetic field lines in the space. Magnetic field lines flow from the south pole of the magnet to the north pole, forming a closed loop. Near the magnet, the magnetic field lines will be denser, indicating a stronger magnetic field; while farther away from the magnet, the magnetic field lines will become sparse, indicating a smaller magnetic field. The strength of the magnetic field gradually weakens with distance.        2. The magnetic field generated by the neodymium magnet on the steel plate        On the steel plate, the magnetic field of the magnet will be affected by the shielding effect of the steel plate, and the magnetic field distribution becomes more complex. The strength and distribution of the magnetic field will depend on the material and thickness of the steel plate and the distance between the magnet and the steel plate.        3. The magnetic field generated between two magnets        Depending on the relative position and polarity of the magnets, an attraction or repulsion effect may occur between the two magnets.   (1) Attraction effect: When the north and south poles of two magnets are close to each other, an attraction effect occurs between them. Magnetic field lines exit one magnetic pole and enter the other, forming a closed loop.   (2) Repulsion effect: When two magnets of the same polarity (two north poles or two south poles) are close to each other, a repulsion effect will occur between them. Magnetic field lines will try to spread out to minimize magnetic energy, so the magnets will push each other away.  

Apr 02, 2024
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Common Testing Items for Sintered Neodymium Magnets

     Strong sintered neodymium magnets are widely used in household appliances, transportation, medical health, aerospace and other fields due to its ultra-high magnetic energy density (currently up to 1.5T on the market) and good service characteristics. In order to meet the use requirements of neodymium magnets in different fields and objectively evaluate the applicability and quality of the magnets, it is usually necessary to conduct various index tests on neodymium magnets. Generally speaking, we divide the testing content into three Aspects: First, product appearance size and physical properties; second, product magnetic properties; and third, product performance auxiliary testing items.     1. Appearance size and physical performance testing        The appearance size and physical properties of neodymium products are the basic requirements for product use. A good product must not only meet the magnetic performance requirements, but also need various sizes, coatings, mechanical properties, etc. that conform to actual needs to meet basic assembly and use requirements in different environments.         Product dimensions and tolerances not only affect the assembly effect, but also affect the consistency deviation of magnetic properties, motor operation stability and energy consumption. In actual use, they have attracted more and more customer attention.     2. Magnetic performance testing        The magnetic properties of neodymium are the main requirements for use. Only products that strictly meet the magnetic properties requirements can fully exert their effectiveness in the fields we need and carry out stable applications. This requires us to strictly test the magnetic performance indicators of neodymium.        In terms of magnetic properties, in the early days, everyone focused on the two indicators of remanence Br and intrinsic coercive force Hcj. Now, more and more users are paying attention to magnetic moment and thermal demagnetization. In fact, we use neodymium magnets mainly for its two important characteristics, one is the magnetic energy density per unit volume, and the other is the magnetic stability of high-temperature operation. It is more reasonable to use magnetic moment and thermal demagnetization to evaluate. High performance NdFeB magnets selected using thermal demagnetization indicators will undoubtedly have better service reliability and higher cost performance.   NdFeB Magnets Performance Parameters Grade Br Hcb Hcj (Bh)max Tw Grade mT kGs kA/m kOe kA/m kOe kJ/m3 MGOe ℃ N35 1170-1220 11.7-12.2 >868 >10.9 >955 >12 263-287 33-36 <80 N38 1220-1250 12.2-12.5 >899 >11.3 >955 >12 287-310 38-39 <80 N40 1250-1280 12.5-12.8 >907 >11.4 >955 >12 302-326 38-41 <80 N42 1280-1320 12.8-13.2 >915 >11.5 >955 >12 318-342 40-43 <80 N48 1380-1420 13.8-14.2 >923 >11.6 >955 >12 366-390 46-49 <80 N50 1400-1450 14.0-14.5 >796 >10 >876 >11 382-406 48-49 <80 N52 1430-1480 14.3-14.8 >796 >10 >876 >11 398-422 50-53 <80   3. Auxiliary testing items        The auxiliary testing items of neodymium are mainly to check whether the product performance meets expectations during the production process and to verify whether there are any defects in the production process; when abnormal conditions occur or new products are developed, the product composition and appearance are analyzed and confirmed.        The above are the common testing items for neodymium magnets. We are a professional neodymium magnets manufacturer. If you want to know more about neodymium magnets, please feel free to contact us.    

Mar 20, 2024
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Are powerful neodymium magnets harmful to the human body?

     In our daily work and life, we cannot avoid coming into contact with powerful neodymium magnets. For example, we often use and carry home appliances, digital products, vehicles, mechanical equipment that we operate every day at work, and magnetic resonance imaging that we need to use when going to the hospital for physical examinations. Various magnetic fields are always around us. Many people are always worried about the impact of neodymium magnets on their health. Here is some popular science about whether powerful neodymium rare earth magnets are harmful to the human body, and how harmful they are!          The first is physical damage from powerful magnets. When you use neodymium magnets with relatively strong magnetic force at work, be careful not to get your hands caught. Otherwise, your skin and flesh may be injured at least, or your bones may be broken at worst. Because the powerful neodymium magnet is a permanent rare earth magnetic material, it is very fragile. Be careful to prevent falling and collision. There is also the need to keep it at a certain temperature.          Powerful neodymium magnet magnetic field and AC magnetic field radiation problems. Many people clearly feel their ears feel hot and have localized headaches after talking on the phone for more than half an hour. This is the harm caused by alternating current magnetic fields to the human body. In particular, high-frequency magnetic fields are more harmful to the body. However, even N52 strong neodymium magnets may have a magnetic field strength less than 10,000 Gauss. No scientific researchers have suggested that it will harm the human body or have other abnormal effects. The specific situation needs further verification.        When you go to the hospital for a physical examination and have a magnetic resonance imaging, the doctor will ask you to use a piece of radiation-proof cloth to cover key parts. Therefore, I personally think that magnetic radiation has some impact on the body. If your body is equipped with medical electronic equipment such as a pacemaker, it is recommended not to do work related to strong neodymium magnets, as this will cause great harm to the body.          Through the above analysis, we are usually inseparable from various magnetic materials and magnetic fields. How to protect ourselves from magnetic field interference and harm is to stay away from high-intensity magnetic fields as much as possible. Be extra careful when using powerful neodymium magnets at work to avoid harm to your body. In fact, various weak magnetic fields and permanent magnetic materials cause very little harm to the human body, so there is no need to be overly afraid.

Mar 08, 2024
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The Notice about Starting Working after Spring Festival Holiday

Dear friends,        May everything be all right!        We have ended the Spring Festival holiday and have officially resumed work. We look forward to returning with renewed energy and enthusiasm, and we think you will too. Our factory is gradually resuming production, and we are going all out to create excellent quality for you!          Our company has been a professional supplier of neodymium magnets, buckyballs, and fishing magnets for 25 years. The company has always been committed to providing the highest quality products and excellent services to gain the support and love of new and old customers. If you have any questions, please feel free to tell me and our Foreign Trade Department will reply within 2 hours!          If you have completed the order payment before the holiday, don't worry, we will expedite your order to ensure that your order is shipped before the deadline. Once your custom size neodymium magnets are completed, I will inform you as soon as possible. Thank you for your patience. The delivery time from our factory is 7-15 days, depending on the volume of goods. We have a variety of transportation methods, generally through UPS, FedEx and other express transportation. The transportation time is usually about 7 days, which is convenient and fast. Our packaging is packed in standard export cartons, and the magnets are magnetically isolated for better transportation.      The peak purchasing season in March is coming, so stay tuned for the big magnet sales! It's peak season and we have a lot of orders to handle. If you are interested in our NdFeB permanent rare earth magnets, please contact us as soon as possible. We will arrange production and shipment as soon as possible after placing the order. The earlier you place your order, the sooner we can arrange production.          Start a new chapter and move towards a glorious future. With firm belief and full enthusiasm, we meet new challenges and get off to a good start! May innovation and excellence accompany every moment and create a better tomorrow! A new beginning, a new challenge!  

Feb 22, 2024
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Ndfeb-A Key Link of Progress in the Automotive Industry

     Nowadays, NdFeB magnets have been widely used in the automotive industry. Due to the growing demand for electric vehicles in the global automotive market, their use is also gradually increasing. In fact, sintered rare earth neodymium magnets used to be found safe in products such as hard drives, microphones, speakers, headphones, and magnetic bearings, but now, neodymium magnets are more common in electric motors.        Neodymium magnets are used in various types of motors, such as high-performance motors in electric vehicles, and their use is increasing rapidly. The automotive world has recently developed a new type of neodymium magnet that uses significantly less neodymium and can be used at high temperatures. The new magnet could help expand the use of engines in various fields, including cars and robotics, as well as maintain a balance between supply and demand for valuable rare earth resources. However, the automotive industry is working to further improve performance and evaluate industrial NdFeB magnets applications. At the same time, the development of mass production technology is accelerated, with the goal of enabling the adoption of NdFeB in all engines for a variety of applications, including automotive and robotics.          Neodymium magnets have become synonymous with advancements in automotive safety features and are integral to the development of innovative solutions such as anti-lock braking systems. These powerful magnets are used in vehicles to increase the effectiveness and reliability of safety components, ensuring optimal operation in a variety of conditions. The use of magnetic materials, especially high grade neodymium magnets, is crucial in safety applications and their inclusion is essential for the development of complex and effective safety mechanisms. They play an important role in ensuring that the final application of magnets contributes to the overall safety and functionality of the vehicle, making them integral in modern automotive design.          Neodymium magnets are key to progress in the automotive industry. They herald a future in which vehicles will be more efficient, sustainable and innovative. As we address challenges and opportunities, the critical role of neodymium magnets will shape the future of the automotive industry and propel us toward new horizons.  

Jan 24, 2024
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Spring Festival Notice - If you need magnets , please order in advance!

Dear Friends,   The annual Spring Festival (2.10) is coming, we will be on holiday from February 8th, please place your order in advance to save your time and cost. Here, tourists, we would like to remind you of our holiday schedule!   For orders placed before the holiday (2.8), we will promptly notify the factory to arrange the production plan; orders generated during the holiday will be processed after the holiday and production will be notified. If you want your goods to be delivered before the Spring Festival, please place your order before January 17th. Thank you for your cooperation.   We will keep in touch with you during the holidays, if you have any questions please email us admin@cnsupermagnet.com. Our staff will check emails every day and will process and respond to emails in a timely manner.   The factory will have an ten/fifteen days holiday. During holidays, international express companies such as UPS\DHL\FEDEX\TNT will not accept magnetic products, which will cause some customers' goods to be delayed and inconvenient. Please understand!   We apologize for any inconvenience caused to you.     About our Spring Festival:        The Spring Festival, also known as Chinese New Year, is China's most popular holiday. Here are some things you may not know about Chinese New Year.     1. There is no fixed date for the Spring Festival        According to the lunar calendar, the Spring Festival falls on the first day of the first lunar month every year and lasts until the 15th (full moon), which means that the Spring Festival is different every year. Speaking of the lunar calendar, it still exists in China and most Chinese people celebrate their birthdays through the lunar calendar as well.   2. Chinese people set off firecrackers during the Spring Festival        Setting off fireworks during the Spring Festival has a long history. Its origin is related to some myths in ancient China. Ancient people believed that firecrackers could drive away fierce Nian beasts, avoid accidents and disasters, and thus protect their families. This custom has been passed down to the present day, and the symbol of setting off fireworks extends to the ancestor's sacrifice and remembrance and conveys a festive and lively atmosphere.   3. Children will receive lucky money in red envelopes during the Spring Festival          When you are a child, you probably receive a lot of gifts at Christmas. But in China, people prefer the direct method - putting money in red envelopes. Interestingly, adults now also receive red envelopes. Thanks to smartphones and WeChat, billions of Chinese people share their happiness, send a digital red envelope in a group chat, and share the red envelope together. It's usually not about the money, it's about sending a message of blessing.

Jan 11, 2024
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