Ring NdFeB Bonded Permanent Magnets

Ring NdFeB Bonded Permanent Magnets, Epoxy Plated Rare Earth Neodymium Compression Molded Isotropic Tube Magnet, BNP-6 thermoplastic bonded NdFeB permanent magnets for Sensor and Motor, High Performance Component Multipoles Radial Ring Magnets, Automotive Polymer-Bonded Neodymium Magnets China Supplier

Ring NdFeB Bonded Permanent Magnets Technical
Material: Plastic Binders and NdFeB Powder
Part No.: MPBD-CDMR38
Plating / Coating: Black Epoxy
Shape: Ring / Tube
Grade: BNP-6
Tolerance: ±0.1 mm
Maximum Operation Temperature: 100 °C ~ 150 °C
Delivery Time: 7-15 days
Made in China

Bonded Neodymium Iron Boron (NdFeB) magnets

Bonded NdFeB magnets are strong magnets which are used for various applications. They are manufactured by binding rapid-quenching NdFeB powde mixed with resin to form a magnet by compression molding with epoxy or infection molding with nylon. The latter technique is particular effective in large volume production, though the magnetic value of products is lower than those made with compression molding because of their relatively lower density. Bonded NdFeB is easily machined. Coolants must be used while machining this material in order to avoid spontaneous combustion of powder. Machining this material removes a layer of protective coating, and re-coating for corrosion resistance may be necessary. Various shapes of high dimensional accuracy can be produced without further processing. Epoxy coating is mostly common used for bonded NdFeB magnets, nickel-plating is also used to prevent corrosion.

Isotropic bonded NdFeB materials can be magnetized in any direction, or with multiple poles. Special magnetizing fixtures are required in order to achieve multiple pole magnetization. isotropic resin bonded Neodymium-Iron-Boron material offers a high energy product with an exceptional resistance to demagnetisation. Capable of operating up to 120ºC. Ring magnets may be machined from discs. Being isotropic, most shapes can be magnetised in any direction. Discs or rings may have either axial or diametric poles. Minimum field strength to magnetise to saturation is 3000kA/m (37500 0e). Such multipole fixtures may cost several thousands of dollars depending on design complexity and production rate requirements. Isotropic Resin Bonded Magnet, isotropic bonded ndfeb magnetic ring, Ring NdFeB Bonded Permanent Magnets, Isotropic compression molding bonded NdFeB

Hybrid magnets to create different magnetic properties
With different ratio of additives to NdFeB powder, magnetic properties of hybrid NdFeB magnets can be tuned in a wide range. Once the ratio is fixed, magnetic property fluctuation can still be limited in a narrow bank. Hybrid magnets will meet customers’ specified properties.

Characteristics for the initial magnetization of NdFeB bonded magnets
Rapidly quenched NdFeB powder used for bonded magnets is multi grain with grain size of sub-micron. Powder is isotropic in magnetic properties, which results in flat increasing of remanence and intrinsic coercivity with applied field. Magnet can only be magnetized to saturation in high fields.

Bonded Magnet Advantages
Produced with high efficiency, stability and repeatability
Magnet and other part may form together in one step
Free choice of magnetizing direction-especially for multi-polar applications
High dimensional accuracy-large quantity applications with minimum post-press machining
Thin-wall ring and complex shape magnets
High resistance to corrosion