Radially oriented anisotropic NdFeB ring magnets MPCO has developed a unique hot extrusion process to produce Radially oriented anisotropic NdFeB ring magnets. Unlike sintering, this process does not rely on a magnetic field for radial orientation. Our process starts with raw material powders manufactured by rapid quenching of the prescribed alloys into nanocrystalline flakes. These [...]
Injection molded magnets are made by injecting the special compound, a mixture of Nd magnet powder and high performance polymer, into the mold. These magnets cover a wide range of characteristics as isotropic bonded magents, including heat resistance and higher performance. Injection molding offers very flexible shape design as well as overmolding and insert molding [...]
Isotropic polymer bonded NdFeB magnets - The raw material powder is manufactured by rapid quenching of prescribed alloys into nanocristalline flakes which are subsequently annealed for optimum magnetic properties. Shortly after the invention of rapidly quenched NdFeB magnet powders, MPCO had started to develop polymer bonded magnets from these powders. Isotropic polymer bonded NdFeB [...]
Injection Magnet Application Classification Precise ring magnet for micro motor used for automobile gauges motor, timekeeper motor,cooling fan micro motor. Product characteristics: High dimensional accuracy, small concentricity and multipole magnetizing. Plastic injection magnet rotor assembly suitable for automotive gauges. Product characteristics: Simultaneous incorporating shaft, high requirements for radial run-out. Magnet ring for motor suitable for [...]
Ion Vapor Deposition (IVD) Aluminum Coating Magnet Introduction of aluminum coating magnet From the perspective of anti-corrosion and mechanical strength, the aluminum coating is an ideal choice for NdFeB magnet. The superiorities of aluminum coating includes: The potential difference between aluminum and NdFeB substrate is very low, and could not be formed electrochemical corrosion. There [...]
The Brief Introduction about Magnetic Boiler Filter The central heating system is a relatively energy-efficient way to heat all of rooms in home. The central heating system of China quite different from other Western countries, and only the people north of the Qinling Mountain-Huaihe River Line can enjoy the central heating, so this line is [...]
Neodymium Price Increase Explanation Letter to Valued Customers Dear Valued Customer, You may already feel that recently our prices for Rare Earth Neodymium magnets have increased quickly and the validity of price is shortened. We understand this may have caused inconveniences. However, we think it’s necessary to explain the current situation and also express our [...]
MPCO Magnetics Starts to Use Water-based Cutting Fluid The cutting fluid is an essential accessory material to the cutting process. For NdFeB magnet, the grinding heat at grinding area will reach 1000 to 1500 deg C during the slicing and grinding processes, the NdFeB magnet is likely to appear spot annealing, surface burning, oxidation, crack [...]
Permanent Magnets Markets and Devices / Applications Devices • Electromechanical machines and devices e.g. motors, generators, actuators • Acoustic transducers e.g. speakers, earphones, ringers • Mechanical force and torque devices e.g. holding, lifting, clutches • Microwave and ion beam control e.g. TWT’s, particle accelerators • Conversion of external stimuli to electrical signal e.g. sensors • DC field generation e.g. MRI Markets and Industries • Automotive and transportation • Industrial and commercial • Consumer products • Military and aerospace • Medical Permanent Magnets Markets and Devices Applications Sensors/Encoders Hall Effect Encoder for end of shaft applications. Available as either absolute or incremental encoders they can provide digital position, analog position, and quadrature speed outputs. Capable of rotational speeds over 20k RPM. Hall IC used for this application uses a diametrically magnetized magnet. Hall Effect through‐shaft encoder. Requires use of Hall IC capable of off‐axis sensing using multipole bonded magnet. Low cost, speed or position sensors typically seen in automotive applications – Cam position, crank position, engine speed, ABS. This type of sensor can be designed for either face or lateral sensing applications and may, in addition to the Hall IC, incorporate a magnet if sensing a metal target or a pole piece if sensing an encoder multipole magnet. What is the best permanent magnet material and process? •It depends; on the weight/space limitations, application operating conditions, operating parameters of the magnetic circuit, annual quantity, device assembly mechanization etc. • Despite have lower flux output bonded magnets can offer advantages over sintered magnets for many applications. • Despite lack of breakthrough in new materials over the last 30 years there are several promising developments in bonded magnets on the horizon. • [...]
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
Do you know Wind Turbine Permanent Magnet? Since the first oil crisis in 1973 and the radiation leak at Fukushima in 2011, more and more eyes on wind power. For example, affected by the nuclear leakage accident in Japan, Germany will plan to abandon nuclear power to generate electricity completely. And the same time, strive [...]
Permanent Magnets Market To Grow From 2014 to 2020 According to the new report published by Grand View research, the global Permanent magnets market size will reach $31.18 billion by 2020, growing at CAGR of 9.7%, increasing use of the product in the manufacturing of various components including gearbox, alternators and motors increases functional efficiency [...]