Ferrite Injection Plastic Magnets Technical
Material: Plastic Binders and Ferrite Powder
Method: Injection Mold
Part No.: MPBD-07H141
Magnetization:outer 2poles
Application:water meter
Flux Force:per pole≥1100GS
Dimension:(φ5.08-φ1.626)×9.525
Tolerance: ±0.1 mm
Maximum Operation Temperature: 180 °C
Delivery Time: 15-30 days
Made in China
One of the more important developments in magnetic materials is polymer bonded magnets. This has opened a new world of application opportunities. The processing temperatures employed to blend and mold the material mixture is low enough to allow many different magnet powders to be used alone or in combination in the polymer binder to achieve an unprecedented range of properties.
Another benefit of the injection molding process is that magnet material can be directly molded into, onto, or against other assembly components, eliminating subsequent assembly steps. This is called insert injection molding.
Injection molded magnets can be of very simple shapes or very complex. All or only part of the device may be magnetized. It is sometimes cost advantageous to make an entire part out of the magnet material and just magnetize the portion requiring magnetic output.
Temperature Characteristics
Maximum use temperature is a function of both the magnetic alloy powder and of the binder. For example, ferrite powders in nylon 6 or PPS have tested satisfactorily at 150°C and 180°C respectively. On the other hand, nylon 12 melts above 170°C and is not recommended for use above 150°C. Magnetic material such as the highest energy NdFeB grade, with intrinsic coercivity of 9,500 Oersteds (760 kA/m), suffers significant irreversible magnetic loss above 120°C, regardless of which binder is used. Maximum use temperatures are listed on each product’s specification sheet. injection ferrite rotor magnets
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