BHmax

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  • Super Strong Neodymium Magnets

Super Strong Neodymium Magnets

Super Strong Neodymium Magnets are found in the commercialization of the highest powerful performance magnets, known as the magnetic king, with a high maximum magnetic energy product (BHmax) higher than the ferrite (Ferrite) 10 times.Mechanical processing properties of its own some very good.Operating temperature up to 200 degrees Celsius.And its hard texture, stable performance, good [...]

By |February 6th, 2021|Learning Resources, Magnet News, Magnetic Industry, Magnetic Knowledge, Magnetic Materials, Magnetic Products, NdFeB, Neodymium Magnets, Permanent Magnet|Comments Off on Super Strong Neodymium Magnets
  • How Are Samarium Cobalt Magnets Made

How Are Samarium Cobalt Magnets Made

How Are Samarium Cobalt Magnets Made SmCo magnets are rare earth magnets with high magnetic energy product and extremely low-temperature coefficient. Its maximum operating temperature can reach 350°C. When working at a temperature above 180℃, its maximum magnetic energy product (BHmax), coercivity, temperature stability, and chemical stability all exceed those of the NdFeB magnet. But [...]

  • Handling Neodymium Magnets Safety Precaution

Handling Neodymium Magnets Safety Precaution

Handling Neodymium Magnets Safety Precaution With high intrinsic coercive force (Hci) over 12,000 Oe and maximum energy product ((BH)max) between 27-52 MGOe, neodymium magnets have the greatest strength among all available permanent magnet materials (>7 times stronger than ceramic magnets) as they are extremely resistant to demagnetization and have high saturation of magnetization. The magnetization [...]

  • Select Material Grades for Neodymium Magnets

Select Material Grades for Neodymium Magnets

Select Material Grades for Neodymium Magnets When you are trying to figure out which neodymium magnets to select for your design needs, you would always see the term “grade” or “N rating” from any supplier or manufacturer. Besides a few other criteria, desired material grade must be defined for a neodymium magnet. So, what does [...]

  • Nanocomposite Permanent Magnet Materials

Nanocomposite Permanent Magnet Materials

Nanocomposite Permanent Magnet Materials Nanocomposite permanent magnet materials, combining magnetically hard and soft phases in nanoscale, is a new permanent magnetic material. Compared with traditional permanent magnetic material, nanocomposite lowers rare earth content and cost, exhibits high coercivity of hard magnetic phase and high saturation magnetization of soft magnetics phase, upgrades in temperature stability, heat [...]

  • Magnetic Measurements

Magnetic Measurements

Magnetic Measurements Magnetic Measurements For measuring of the fundamental magnetic properties of a material (Br, bHc, iHc, BHmax, demagnetisation curve), Hysteresisgraph or BH-tracker is used. A BH-tracker consists of an iron (usually FeCo) yoke to form a closed circuit, electromagnets to create the demagnetizing field and fluxmeters to determine the demagnetizing field and the materials [...]

  • Three environmental factors affect function of high temperature resistant magnet

Three environmental factors affect function of high temperature resistant magnet

Three environmental factors affect function of high temperature resistant magnet Environment temperature. Since sintered NdFeB has a negative temperature coefficient (αBr<-0.13%/°C, αHcj<-0.6%/°C), the instantaneous maximum temperature and the continued maximum temperature of the operating environment will cause different degrees of demagnetization of the magnet itself. Contains reversible and irreversible, rehabilitative and non-recoverable. Environment humidity. NdFeB [...]

  • Segment Magnet Performance Directly Affects Working Efficiency of Motor

Segment Magnet Performance Directly Affects Working Efficiency of Motor

Segment Magnet Performance Directly Affects Working Efficiency of Motor Automobile motor magnetic tile: The two phases of alternating current are respectively fed into two or four sets of motor coil windings to form a rotating magnetic field in the motor. The rotating magnetic field generates an induced current in the rotor of the motor, and [...]

By |February 4th, 2019|Automotive, Bonded Magnets, Bonded NdFeB, Ferrite Magnet, Magnet Applications, Magnetic Industry, Magnetic Knowledge, Magnetic Materials, Motor Magnet, Motors, NdFeB, Neo Segment, Neodymium Magnets, Permanent Magnet, Sintered Ferrite Magnet, Sintered NdFeB|Comments Off on Segment Magnet Performance Directly Affects Working Efficiency of Motor
  • Typical Compression Bonded Magnetic Properties

Typical Compression Bonded Magnetic Properties

Typical Compression Bonded Magnetic Properties Many suppliers publish specifications for a nominal 10 MGOe magnets with a minimum limit of 9 MGOe. Similar for a nominal 11 MGOe magnet; minimum limit is 10 MGOe. Have to design to lower limit of BHmax Typical Compression Bonded Magnetic Properties BHmax Improvement in Compression Bonded Magnets The BHmax of a compression bonded isotropic NdFeB magnet is influenced by the following two factors: 1. Volume fraction of magnetic phase in the magnet – typically measured by the density of the magnet. • We are investigating increasing the pressing pressure which requires special press construction, lubricants and tooling materials – current production pressing pressures are 7tonnes/cm2 for 5.9 g/cm3 and 10MGOe; estimated that > 20 tonnes/cm2 required for 6.3 g/cm3 and > 11 MGOe. • Optimize the particle encapsulation chemistry and process. • Tailored multimodal PSD’s for maximum packing density. • Particle shape control. 2. Magnetic powder Br/BHmax • Increase isotropic Br of powders while maintaining sufficient Hci to have “linear” B‐H  demagnetization characteristic at the application temperature. Arc Permanent Magnet Neodymium Nickel N35UH   Neodymium Generator Arc Magnet Nickel N33H   Arc Neodymium Magnet Nickel N30H   Segment Neodymium Magnet Nickel N52

By |May 7th, 2018|Bonded Magnets, Bonded NdFeB, Compression Molded NdFeB, Magnet Properties, Magnetic Knowledge, Magnetic Powders, NdFeB|Comments Off on Typical Compression Bonded Magnetic Properties
  • Measuring Permanent Magnets Properties

Measuring Permanent Magnets Properties

Measuring Permanent Magnets Properties with Vibrating Sample Magnetometer Vibrating Sample Magnetometers (VSMs) are the most commonly employed tool for properties measurement of permanent magnet materials. They can be applied to magnet powder, thin films, anisotropic materials, magnetic recording materials, single crystals and liquid, etc.. They also allow for a broad temperature range from 4 K [...]

By |February 7th, 2018|Magnet News, Magnet Properties, Magnetic Knowledge, Magnetic Materials, Magnetic Science, Permanent Magnet|Comments Off on Measuring Permanent Magnets Properties
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