, generally divided into permanent magnet and soft magnetic two categories, we said the magnet, generally refers to the permanent magnet: metal alloy magnets including ndfeb magnet Nd2Fe14B), samarium cobalt magnet (SmCo), aluminum nickel cobalt magnet ALNiCO)
Ferrite)
Ndfeb magnet: it is currently found to be the most commercially available magnet, known as magneto, has extremely high magnetic properties (BHmax) than Ferrite more than 10 times. Its own mechanical processing performance is also quite good. 200 β. And its texture is hard, performance is stable, has very good cost performance, so it is used extremely widely. But (such as Zn,Ni, electrophoresis, passivation, etc.).
Ferrite magnet: its main raw materials include BaFe12O19 and SrFe12O19. Aluminum-nickel-cobalt magnet: an alloy of aluminum, nickel, cobalt, iron, and other trace metals. Casting process can be machined machinability is very good. The cast alnico permanent magnet has the lowest reversible temperature coefficient and the operating temperature can be over 600β. Alnico permanent magnet products are widely used in various instruments and other applications.
SmCo can be divided into SmCo5 and Sm2Co17 according to the different components. SmCo (as a rare earth permanent magnet, not only has a high magnetic energy product (14-28mgoe), reliable, in the powerful magnet technology after saturation magnetization of the magnet in reverse magnetization, magnetic induction intensity to zero required reverse magnetic field strength Hcb). But at this time the magnetization of the magnet is not zero, just the added reverse magnetic field and magnetic (external magnetic induction intensity is zero) if the withdrawal of the external magnetic field at this time, the magnet still has a certain 11000Oe above.
At this time, the magnetic induction intensity of the magnet represents the maximum flux value that the magnet can provide. As can be seen from the demagnetization curve, it corresponds to the practical constant with the highest Br when the air gap is zero. Internal coercivity if the applied magnetic field is equal to the internal coercivity of the magnet, the magnetism of the magnet will decrease with the increase of temperature. Therefore, the high grade should be chosen when working in the high temperature environment.
Production, sales as one of the private enterprises. Main production and marketing of the same sex rubber magnetic (magnetic products); The leading products with high technology content of the company: various specifications and high performance magnetic bar, tile magnetic, square magnetic,
