The physical properties of the magnet

In the actual production of ferrite magnets, the chemical composition of good raw material, and sometimes may not be able to get good performance and microstructure of ferrite magnets,magnetic plates the reason is the impact of physical properties. The physical properties of iron oxide are listed including the average particle size APS, the specific surface area SSA and bulk density BD. Since the Mn-Zn ferrite magnet formulations of iron oxide accounts for about 70 percent, so the value of its APS APS have a great impact on the value of a ferrite magnet powder. In general, the value of small iron APS, APS value of a ferrite magnet powder is also small, help speed up the rate of chemical reactions. However, given the powder particles are too small and not conducive to after-pressing and sintering easy to crystallize the situation, APS value should not be too small. Obviously, when iron APS is too large, in the pre-burn, because the particle size is large, only the spinel phase diffusion reaction, it can not be further grain growth process. This will inevitably lead to the activation energy required for sintering improve, not conducive to solid-phase reaction.

different materials

Magnets made: divided hoofed magnet and bar magnet, is the most common of all life, which is popular horseshoe magnet. Sided magnet magnetic means one side, the other side of the magnetic weak magnet, the method is treated with a special wrap-sided galvanized iron to one side of the magnet, so that one side of the magnetic shield will be wrapped, magnetic is refracted to the other side, the other side of magnetically enhanced. If only one side of the case with a magnetic, magnetic plate separator if the other side can cause damage or disturbance magnetic; some occasions, such as a magnet on the box only need one side of the magnetic, the other side is optional, there is no use of magnetic, Such single-sided magnetic greatly reducing costs and saving material. Sided magnet magnetic refraction as satellite pot on the signal light refraction or torch light refracting surface of the pan to determine: 1 Materials: The choice of material and thickness, and spacing of the magnet and the material has a close relationship. Pure iron is easy to MFL, special treatment refraction will increase, but not 100% shielding material developed, but the effect of different manufacturers make different materials.

magnetic refraction

Magnets made: divided hoofed magnet and bar magnet, is the most common of all life, which is popular horseshoe magnet. Sided magnet magnetic means one side, the other side of the magnetic weak magnet, the method is treated with a special wrap-sided galvanized iron to one side of the magnet, so that one side of the magnetic shield will be wrapped, magnetic is refracted to the other side,magnetic plate the other side of magnetically enhanced. If only one side of the case with a magnetic, if the other side can cause damage or disturbance magnetic; some occasions, such as a magnet on the box only need one side of the magnetic, the other side is optional, there is no use of magnetic, Such single-sided magnetic greatly reducing costs and saving material. Sided magnet magnetic refraction as satellite pot on the signal light refraction or torch light refracting surface of the pan to determine: 1 Materials: The choice of material and thickness, and spacing of the magnet and the material has a close relationship. Pure iron is easy to MFL, special treatment refraction will increase, but not 100% shielding material developed, but the effect of different manufacturers make different materials.