Ferrite magnet is a kind of permanent magnet mainly made of SrO or Bao and Fe2O3. Compared with other permanent magnets, ferrite magnet is hard and brittle, with low magnetic energy, but it is not easy to demagnetize, not easy to corrode, simple production process and low price. Therefore, the output of ferrite magnet in the whole magnetic iron industry is high and it is widely used in industrial production.

Ferrite magnet is a sintered permanent magnet material, which is composed of barium and strontium ferrite. In addition to strong anti demagnetization performance, this kind of magnetic material also has the advantage of low cost. Ferrite magnets are hard and brittle, requiring special machining processes. Due to its orientation along the manufacturing direction, its anisotropic magnet must be magnetized along the selected direction, while its isotropic magnet can be magnetized in any direction because it has no orientation, although a slightly stronger magnetic induction will be found on the smaller side of the pressure surface. The magnetic energy product ranges from 1.1mgoe to 4.0mgoe. Due to its low cost, ferrite magnet has a wide range of applications, from motors, speakers to toys and handicrafts, so it is a widely used permanent magnet material at present.

Characteristics of ferrite magnet materials
Ferrite magnets are produced by powder metallurgy with low remanence and low restored magnetic permeability. The coercivity is large and the anti demagnetization ability is strong, which is especially suitable for the magnetic circuit structure under dynamic working conditions. The material is hard and brittle, and can be used for cutting with emery tools. The main raw material is oxide, so it is not easy to corrode. Working temperature: -40 ℃ to +200 ℃.
Ferrite magnets are also divided into anisotropy (anisotropy) and isotropy (isotropy). Isotropic sintered ferrite permanent magnet materials have weak magnetic properties, but can be magnetized in different directions of the magnet; The anisotropic sintered ferrite permanent magnet material has strong magnetic properties, but it can only be magnetized along the predetermined magnetization direction of the magnet.

Physical properties of ferrite magnet
In the actual production of ferrite magnets, raw materials with good chemical composition sometimes may not be able to obtain ferrite magnets with good performance and microstructure. The reason is the influence of physical properties. The physical properties of iron oxide listed include average particle size APS, specific surface area SSA and bulk density BD. Because iron oxide accounts for about 70% in the formula of Mn Zn ferrite magnet, its APS value has a great influence on the APS value of ferrite magnet powder. Generally speaking, the APS value of iron oxide is small, and the APS value of ferrite magnet powder is also small, which is conducive to accelerating the speed of chemical reaction. However, considering that too fine powder particles are not conducive to subsequent compaction and easy crystallization during sintering, APS value should not be too small. Obviously, when the APS value of iron oxide is too large, due to the large particle size, the diffusion reaction of spinel phase can only be carried out, and the grain growth process can not be further carried out. This will inevitably lead to the increase of activation energy required during sintering, which is not conducive to solid-phase reaction.

Our advantages
1. Rich experience: we are a ferrite magnet manufacturer engaged in permanent magnet materials for many years, and can provide you with one-stop customized solutions for powerful magnets.
2. Quality assurance: there are many magnet brands, models and specifications; After strict production process, complete testing, analysis, detection and test are equipped to ensure that customer needs are met.
3. Fast delivery: it has a number of production equipment to meet the production requirements of customers for permanent magnet materials; It can ensure product quality, deliver goods on schedule, and provide customized processing services.
4. After sales considerate: professional after-sales team and logistics distribution system provide you with one-to-one considerate service for processing and delivery.
Shanghai Xinsheng magnet Co., Ltd. is a company that focuses on the customized production and sales of ferrite magnets. Permanent magnets with any specification and performance can be customized. Those who need ferrite magnet quotation and proofing are welcome to come with pictures and samples.