What Decide Magnets Quality

There are five factors that decide magnets quality. They are remanence, magnetic coercivity, intrinsic coercivity, maximum magnetic energy product and the most highest working temperature.

Full name of remanence is remanent induction. It means that cancel the external magnetic field after magnetized to saturation in a closed environment. The intrinsic coercivity is a physical quantity which could measure magnet’s ability of resistance to demagnetization. The most highest working temperature could not exceed the temperature which indicated by the grade. For example, NdFeB magnet with N35 grade could not be more than 80 degree. As soon as the temperature reach to 80 degree, it will appear the phenomenon of demagnetization.

NdFeB magnet have permanent magnetic and easy to be processed due to its strong magnetic. They are widely used for many industries. But little people know magnetizing methods. The magnets we often used in daily life are all axial magnetization. No matter they are circular, square or other special-shaped. Certainly there are other magnetizing methods. Such as axial multistage filling, radial magnetization, inner circle radiation magnetizing and radiation magnetizing. Normal magnetization can be completed with magnetizing machine. But some special one should be finished with more tools.

Rubber Magnet With Different Nature

Rubber magnet is made of bonded magnetic ferrite, rubber, plastics and other materials. It is processed with extrusion, calendering or injection. Due to the material own good plasticity, it could be manufactured goods or semi finished products. Certainly you can cut, punching, slitting freely. Rubber magnet has good corrosion resistance. Rubber magnets are mainly divided into two kinds, they are isotropic rubber magnet and anisotropic rubber magnet.

There are some difference between isotropic rubber magnet and anisotropic rubber magnet. Firstly they are in different magnetic. The magnetic of isotropic one is more weaker than anisotropic one. Besides during the work, they are in different temperature and density. Isotropic rubber magnet is mainly used for fridge magnets, car stickers, printing products and promotional products. But the anisotropic rubber magnets are widely used in the fields of micro motor, computer, laser printer, copier and magnetic toys.

Rubber magnet can make different kinds of complex shape. Such as coil, sheet, strip, block and ring. Its surface could be covered with PVC film, coated paper and double-sided adhesive. Our rubber magnets are all soft and not easy to be broken. We can offer different shapes of rubber magnet according to your requirements. These are always in environmental protection.

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