Permanent ferrite magnets are mainly divided into sintered ferrite magnets and injection ferrite magnets, these two types are also a lot of customer inquiries to us, injection ferrite magnets and sintered ferrite magnets, what are the differences? The next sintered ferrite is a simple introduction.
Sintered ferrite production process and product appearance is very similar to ceramic, so it is also known as ceramic magnets, sintered ferrite low cost, and has excellent corrosion resistance and high temperature resistance, the highest working temperature can reach 250 ° C, the need for mold, the shape of the main round, ring, tile, cylindrical injection molding ferrite simple introduction.
Injection molded ferrite is a type of bonded magnet produced by mixing and granulating ferrite powder with thermoplastic binders and additives such as nylon 12 (PA12), nylon 6 (PA6) or polyphenylene sulfide (PPS), using injection molding process.
After a brief introduction, let's look at some of their differences.
First, the shape difference.
Injection molded ferrite can do some complicated shapes, while sintered ferrite can't, but can only do some simple corner cutting, slotting, hole punching processing.
Second, the size accuracy difference.
The dimensional accuracy of injection molded ferrite is higher, with a typical tolerance of ±0.08, while the tolerance of sintered ferrite is often plus or minus 0.1.
Third, the difference between the fall and wear resistance.
Injection ferrite because of the nylon component, in the drop wear resistance is better, that is, dropped on the ground is not so fragile.
Fourth, the difference in magnetic force.
The magnetism of sintered ferrite is higher than injection ferrite.
Fifth, Difference in temperature resistance
As mentioned before, the temperature resistance of the two is better than that of sintered ferrite.
The comparsion between WPC ferrite and sintered ferrite shows obviously in different aspects for various way and angles of different levels.