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Motor magnet

Jul 28th, 2022 at 14:09   Automobiles   Satna   171 views
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A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. Ferromagnetic materials can be divided into magnetically "soft" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically "hard" materials, which do. Permanent magnets are made from "hard" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a strong magnetic field during manufacture to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. "Hard" materials have high coercivity, whereas "soft" materials have low coercivity. The overall strength of a magnet is measured by its magnetic moment or, alternatively, the total magnetic flux it produces. The local strength of magnetism in a material is measured by its magnetization.

Types of magnets: Shape magnets: square magnets, tile magnets, special-shaped magnets, cylindrical magnets, ring magnets, wafer magnets, bar magnets, magnetic frame magnets, attribute magnets: samarium cobalt magnets, ferrite magnets, AlNiCo magnets, FeCrCo magnets, industrial magnets: magnetic components, motor magnets, rubber magnets, plastic magnets, etc. Magnets are divided into permanent magnets and soft magnets. Permanent magnets are combined with strong magnetism, so that the spin of magnetic substances and electron angular momentum are arranged in a fixed direction. Soft magnetism is the addition of electricity. When the current is removed, the soft iron will gradually lose its magnetism. Magnetic materials have also been widely used in the military field. For example, ordinary mines or mines can only explode on contact with the target, and thus have limited effect. And if sensor magnets are installed on mines or mines, since tanks or warships are made of steel, when they are close (without touching the target), the sensors can detect changes in the magnetic field and cause the mines or mines to explode, increasing the lethality.

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