SmCo Magnet

Injection Bonded SmCo Magnets

Injection Bonded SmCo Magnets

The injection bonded SmCo magnets (injection molded magnets) have a high mechanical strength and may be molded together with other matching parts. In all inject

The injection bonded SmCo magnets (injection molded magnets) have a high mechanical strength and may be molded together with other matching parts. In all injection molded magnets, bonded SmCo magnet is produced with high efficiency, stability and repeatability; Magnet and other part may form together in one step. Injection bonded Samarium Cobalt magnet is a kind of functional material. It is unsuitable for structure part design. So the usual requirement to the tolerance of the dimensions for structure part is not applicable to it. Injection bonded Samarium Cobalt magnet has strong anticorrosion function. So it needn't the same surface treatment as that of NdFeB magnet.

Injection Molded Magnets

An important characteristic of injection molded magnets is that they conform dimensionally to the mold cavity which is precisely machined, the result being close tolerances in the finished product. What little dimensional variability there is results from shrinkage of the polymer during cooling. This depends upon part thickness and shape.

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.

One of the most important developments in magnetic materials, polymer bonded magnets, have 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.

Characteristics & Application of Injection Molded SmCo Magnet:

Characteristics: Having high dimensional precision; Versatile shapes and specification; Impact-resistant. Advanced surface treatment technology, effectively protect. Integrated forming

Applications: Copier and laser printer rolls; Permanent motor magnets (rotors & other components); Magnetic rings for aerodynamic component; Color Monitor/TV purity convergence magnet, electro acoustic & telecommunication apparatus, electric motors, measure meters, peg-top, electronic watch, microwave apparatus, magnetic mechanism, sensor and other static or dynamic magnetic routes.

Physical & Magnetic properties Of Injection Molded SmCo Magnet
Br (mT) 300-400 350~550 550-680
bHc(kA/m) 199-279 247~358 334-462
iHc(kA/m) 716-1194 716~1194 716-1194
(BH)max(kJ/m3) 20-28 32~52 48-64
Recoil permeability µr 1.05-1.1 1.05-1.1 1.05-1.1
Recoil temperature coeffiient of Br. (%/ K℃) -0.04(15-100 ℃) -0.04(15-100 ℃) -0.04(15-100 ℃)
Magnetizing field (Ka/m) ≥2786 ≥2786 ≥2786
Density(g/cm3) 3-6 3-6 4-6
Ring crushing strength constant (N/mm2) > 76 > 76 > 76