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The difference between the ndfeb magnets and ferrite magnet _ ndfeb strong magnet manufacturers

by:Newland     2020-03-28
The difference between the ndfeb and ferrite ndfeb has the advantage of cost-effective, good mechanical properties; Lack of Curie temperature in low point, temperature characteristic is poor, and is easy to be pulverization corrosion, must through the adjust its chemical composition and take surface treatment methods to improve, to reach the requirements of practical application.     Ferrite is a ferromagnetic metal oxide. In terms of electrical characteristics, the resistivity of ferrite magnetic material is much bigger than metals and alloys, but also high dielectric properties. Ferrite magnetic can also performance in high frequency with high magnetic permeability. Therefore, ferrite has become a high-frequency weak current widely used in the field of magnetic material, not of metal.     Ndfeb belongs to the third generation of rare earth permanent magnet materials with the characteristics of small volume, light weight and strong magnetic, is currently the best price-performance magnets, the magnetic field is known as the king of magnetic. The advantages of high energy density of nd-fe-b materials in modern industry and obtained widespread application in electronic technology. Under the conditions of bare magnetic, magnetic force can reach about 3500 gauss.     Ferrite or as a ferrite magnetic porcelain, is belong to nonmetallic magnetic materials, magnetic ferric oxide and other one or more metal oxide compound oxide ( Or is ferrite) 。 Magnetic usually is 800 - 1000 gauss, often used in the speakers, speakers and other devices.   Ndfeb magnets and ferrite magnet mainly include the following: the difference between a & ensp; 1. Ferrite magnet performance ndfeb. 2. On the price. Ferrite is much cheaper than the ndfeb magnet. 3. Ndfeb magnet heat resistance is very good, ordinary ndfeb usually only 80 degrees, more than the working temperature of demagnetization will happen. 4. Stability of ferrite is very good, it itself is oxide, is stable, ndfeb alloy, and its easy oxidation, coating protection must do.     The magnet is a general designation, ferrite, neodymium iron boron, plastic magnetic magnet.   According to the degree of magnetic strength to distinguish, ndfeb magnetic strongest, followed by the weakest, ferrite, plastic magnetic materials have their own different brand table.   According to the process, the front for the sintering process, the two plastic magnet for injection molding process.   Mechanical properties, plastic magnet is not easy to be broken, because the composition of nylon. The other two missing Angle fracture easily.   According to the working temperature, the working temperature of ferrite is - (40 ~ 200 degrees, High temperature and low temperature will demagnetization) 。 Summary of working temperature is 80 ~ 230 degrees. Plastic magnetic working temperature is 100 ~ 180 degrees.   According to specific brands more than three corresponding specific working temperature.   Ferrite application: auto wiper motor, window-adjusting motor, fuel pump and seats, etc.   Summary: servo motor, etc. High power high torque motor.
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