ferrite magnets
  • 2021.04.15 Raw material prices of rare earth permanent magnets

    2021.04.15 Raw material prices of rare earth permanent magnets

    On April 15th, some prices in the domestic light rare earth market declined. The price of neodymium praseodymium fell 5000 yuan/ton to 702,500 yuan/ton, the price of neodymium praseodymium oxide fell 3000 yuan/ton to 569,500 yuan/ton, and the price of neodymium oxide was 57.75 yuan. The price of neodymium metal is RMB 757,500/ton, the price of praseodymium oxide is RMB 527,500/ton, and the price of metal praseodymium is RMB 695,000/ton. The price of domestic light rare earth market has been stable recently, and downstream on-demand procurement is the main focus. , The market trading on the floor is general, and it is expected that the price may go down slightly in the later period.
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    15

    Apr 2021.

  • Rare earth exports increase in volume and prices in March 2021

    Rare earth exports increase in volume and prices in March 2021

    According to the rare earth export data released by the General Administration of Customs in March 2021, the total export volume of rare earths in March was 4837.1 tons, an increase of about 36.9% from the average value of January and February; the total export price in March was 58.3 million U.S. dollars, compared with January and February. The average month-on-month increase was about 47.8%; the average export price in March was 12.05USD/Kg, a month-on-month increase of 7.97%. It can be inferred from the export data that foreign demand for rare earths has grown rapidly in the first two months of 2021, which has also played a role in promoting the price trend of rare earths. The picture below shows China's rare earth export volume and growth from March 2020 to 2021
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    15

    Apr 2021.

  • 2021.04.06 Raw material prices of rare earth permanent magnets

    2021.04.06 Raw material prices of rare earth permanent magnets

    The domestic rare earth index declined, the domestic light rare earth praseodymium and neodymium series prices dropped, the price of praseodymium neodymium oxide fell 3000 yuan/ton to 578,500 yuan/ton, the price of praseodymium metal was 715,000 yuan/ton, and the price of praseodymium oxide was 522,500 The price of neodymium oxide fell 5,000 yuan/ton to 627,500 yuan/ton, the price of metal praseodymium was 675,000 yuan/ton, the price of neodymium fell 5,000 yuan/ton to 777,500 yuan/ton, and the price of dysprosium oxide was 3.06 million yuan. Yuan/ton, the price of dysprosium ferroalloy is 3.02 million yuan/ton, the price of dysprosium metal is 3.9 million yuan/ton.
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    6

    Apr 2021.

  • How to Choose the Right Magnet Materials for Your Application?

    How to Choose the Right Magnet Materials for Your Application?

    Permanent magnets are now widely used in life, almost involving all walks of life, such as nuclear magnetic resonance, wind generators and other high-end motors, stereos, door sensors, mahjong magnets, etc. Because there are many types of magnet materials, many customers do not know which magnet they should choose. From which aspect to choose magnets, it is a difficult problem. Below, Bearheart talks about this issue. First of all, from the user's point of view, the points that customers care about are nothing more than the price of the magnet, the magnet's magnetic force and the high temperature resistance of the magnet. Below we briefly introduce several commonly used magnet materials in the market. There are many types of magnets available on the market today, each with different properties. The most common ones are neodymium magnets, alnico magnets, SmCo magnets, and ferrite magnets. Sort by price from low to high 1. Ferrite magnet. Because the material is cheap, the price of ferrite is very low, and the amount of use is very large. It is mostly used in handbag packaging factories, horn factories, and leather goods factories. 2. Neodymium iron boron magnets. High cost performance, although its quantity is not as large as ferrite, but the highest output value. All walks of life are involved. Our customers are mostly used in magnetic connectors, DC motors, robots, smart homes and other fields. 3. Alnico magnets are more used in military products. 4. Samarium cobalt magnets. The cost is high, and it is only used in some high-end permanent magnet motors. The magnetic force of the magnet (from strong to weak) 1. Neodymium iron boron. The third-generation rare-earth permanent magnet products are currently the strongest magnet material. They are called strong magnets, powerful magnets, magnet kings, etc. by outsiders, with a maximum magnetic energy product of 52 megagauss oersteds. 2. Samarium cobalt. The magnetic force is better than that of neodymium iron boron and samarium cobalt magnets can be processed into special shapes. The maximum magnetic energy product is 26 trillion Gauss Oersteds. 3. AlNiCo. The magnetic force is weaker than that of samarium cobalt, and the maximum magnetic energy product is only 5.4 megagauss oersteds. 4. Ferrite. Ferrite and AlNiCo are very weak in magnetism, and the maximum magnetic energy product is only 3.6 MegaGauss Oersteds. High temperature resistance (from high to low) 1. AlNiCo. It can withstand a working temperature of 500°C and is the most high-temperature-resistant magnet material. 2. Samarium cobalt. It is an ideal choice for the working temperature of 250℃-350℃. 3. Ferrite. The upper limit of the heat-resistant working temperature of ferrite is 300℃. 4. Neodymium iron boron. NdFeB is suitable for the working temperature of 80℃-230℃, and the magnetic force is strong. The above is the article on how to choose the right permanent magnet. I hope that after reading it, you already know how to choose the right ...
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    6

    Apr 2021.

  • 2021.03.29 Raw material prices of rare earth permanent magnets

    2021.03.29 Raw material prices of rare earth permanent magnets

    On March 29, some prices in the domestic light rare earth market fell. The price of neodymium praseodymium was 720,000 yuan/ton, the price of neodymium praseodymium oxide fell 1,000 yuan/ton to 586,500 yuan/ton, and the price of neodymium oxide fell 10,000 yuan/ton to The price of neodymium metal fell by RMB 652,500/ton to RMB 817,500/ton, the price of praseodymium oxide was RMB 522,500/ton, and the price of praseodymium metal was RMB 675,000/ton. Recently, the domestic light rare earth market price dropped slightly. Downstream on-demand purchases are the main focus, and on-market transactions are general, and prices are expected to decline slightly in the later period.
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    30

    Mar 2021.

  • What is rare earth permanent magnet material?

    What is rare earth permanent magnet material?

    Rare earth permanent magnet materials, that is, permanent magnet materials contain rare earth metals as alloying elements. Permanent magnet material means that the magnetization is removed from the external magnetic field and can maintain strong magnetism for a long time. Rare earth permanent magnet material is a kind of magnetic material made by alloy composed of samarium, neodymium mixed rare earth metal and transition metal (such as cobalt, iron, etc.), pressed and sintered by powder metallurgy method, and magnetized by a magnetic field. Rare earth permanent magnets are divided into: samarium cobalt (SmCo) permanent magnets and neodymium iron boron (NdFeB) permanent magnets. Among them, the energy product of SmCo magnets is between 15-30MGOe, and the energy product of NdFeB magnets is between 27-50MGOe, which is called "the king of permanent magnets" and is the most magnetic permanent magnet material. Although samarium-cobalt permanent magnets have excellent magnetic properties, they contain rare earth metal samarium and cobalt, which are scarce and expensive strategic metals. Therefore, its development has been greatly restricted. The development of my country's rare earth permanent magnet industry began in the late 1960s. At that time, the leading product was samarium-cobalt permanent magnets. The sales volume of samarium-cobalt permanent magnets in the world was 630 tons, and in my country it was 90.5 tons (including SmCo magnetic powder). technology. It is divided into the first generation (SmCo5), the second generation (Sm2Co17) and the third generation of rare earth permanent magnet materials (NdFeB). New rare earth transition metal series and rare earth iron nitrogen series permanent magnet alloy materials are under development and may become a new generation of rare earth permanent magnet alloys. Comparison of samarium cobalt magnets and neodymium iron boron magnets 1) Different ingredients: Neodymium iron boron magnet: Rare earth metal neodymium 29%-32.5% Metal element iron 63.95-68.65% Non-metal element boron 1.1-1.2% Add a small amount of dysprosium 0.6-1.2% niobium 0.3-0.5% aluminum 0.3-0.5% copper 0.05-0.15% and other elements Samarium Cobalt Magnet 2:17: Sm: 23-28% Rare earth metal cobalt Co: 48-52% Metal element iron Fe: 14-17% Metal element copper Cu: 5-7% Add a small amount of zirconium Zr: 2-3 2) Different performance Relatively speaking, the overall performance of samarium cobalt magnets is weaker than that of neodymium iron boron! 3) Different prices Samarium cobalt magnets and neodymium iron boron magnets of the same performance and size, the price of neodymium iron boron is lower than that of samarium cobalt! Of course, it can be seen from the ratio of the two metal elements above! The content of iron in NdFeB is higher, the content of rare earth elements is less, and the price of iron is very cheap, so the price of NdFeB is cheaper! The content of rare earth elements samarium and cobalt in samarium cobalt magnets account...
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    30

    Mar 2021.

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