The most original definition of magnetic steel is AlNiCo alloy (AlNiCo is the abbreviation of AlNiCo in English). Magnetic steel is composed of several hard strong metals, such as iron and aluminum, nickel, cobalt, etc., sometimes Motor magnets are made of copper, niobium, and tantalum, which are used to make superhard permanent magnets (Any of several hard, strong alloys of iron, aluminum, nickel, cobalt and sometimes copper, niobium, or tantalum, used to make strong permanent magnets. ). The composition of its metal components is different, the magnetic properties are different, and thus the uses are also different. AlNiCo magnet is the oldest kind of magnet, known as natural magnet. Although he is the oldest, his excellent adaptability to high temperature makes it still one of the most important magnets. Aluminum Nickel-cobalt can work normally at high temperature above 500 ℃, which is its biggest feature, and its corrosion resistance is also stronger than other magnets.






Motor magnets are widely used in motors, motors, etc. With its emergence, many high-tech products have appeared, especially in the application of motors, making many products miniaturized and miniaturized. The high remanence, high coercivity and high magnetic energy product of sintered NdFeB make it widely used in servo motors, flat brushless motors and stepping motors, IT products, nuclear magnetic resonance, speakers and other products. Since NdFeB magnets are easy to rust and oxidize, their surface is usually electroplated, such as zinc, nickel, silver, gold, etc., or phosphating or epoxy resin spraying to slow down the oxidation rate.