The Difference Between Injection Molded Ferrite And Sintered Ferrite

Permanent magnet ferrite is mainly divided into sintered ferrite magnet with injection molding ferrite magnet, these two are also many customers asked us, injection molding ferrite magnet with sintered ferrite magnet what are the differences?

Sintered ferrite production process and product appearance and ceramics are very similar, so it is also known as ceramic magnet, steal iron hydrogen body cost is low, the eye has excellent corrosion resistance and high temperature resistance, the highest working temperature can reach 250°C, the need for mold, the shape is mainly round, ring, tile, cylindrical.

Injection molding ferrite is a kind of bonded magnet produced by injection molding process after mixing and granulating of ferrite magnetic powder with nylon 12 (PA12), nylon 6 (PA6) or polystyrene sulfuric acid (PPS) and other thermoplastic binders and additives. It can be injected together with the axis, and the highest working temperature can reach 150°C, respectively. The production needs mold.

After a brief introduction, let's focus on some of their differences.

Firstly, the difference on shape.

Injection ferrite can do some complex shapes, and sintering ferrite can not, can only do some simple corner cutting, blotting, punching processing.

Secondly, the difference on dimensional accuracy.

The dimensional accuracy of injection molded ferrites is higher, with a typical tolerance of plus or minus 0.08, while the tolerance of sintered ferrites is often plus or minus 0.1.

Thirdly, the difference between fall and wear resistance.

Injection ferrioxue because of nylon composition, in the fall resistance to wear resistance is better, that is, not so fragile on the ground.

Fourthly, magnetic differences.

The magnetic properties of sintered ferrite are higher than those of injection molded ferrite.

Fifthly, the temperature difference.

As mentioned in the beginning, the temperature resistance of 2 is better than that of sintered ferrite.

Nowadays, in the motor industry, injection molded ferrite is also one of the main magnetic materials to replace sintered ferrite, in addition to injection molded neodymium iron alliance, bonded neodymium iron cage, etc. Customers who need samples are welcome to call or email us.