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Ferrite Magnets The Magnetization Of Iron
Sep 12, 2017

Ferrite Magnets The magnetization of iron

Iron, cobalt, nickel or ferrite and other ferromagnetic materials are different, its internal electronic spin can be spontaneously arranged in a small range to form a spontaneous magnetic zone, this spontaneous magnetic domain called magnetic domain. Ferromagnetic material magnetization, the internal magnetic field neat, aligned in the same direction, so that the magnetic reinforcement, it constitutes a magnet. Magnet magnetization process is the iron block of the magnetization process, magnetized iron and magnets have different attraction between the polarity, iron is firmly with the magnet "sticky" together.

Natural magnets are iron oxide, and man-made magnets are usually steel. Steel after magnetization will always retain the magnetic general refers to the natural permanent magnet is not just ferrite (iron oxide), as well as iron cobalt nickel alloy, iron rare earth alloy and other permanent magnetic materials, such as aluminum nickel Cobalt, samarium cobalt, neodymium iron boron, these are also very common, very strong magnetic, these substances can be magnetic field magnetic field magnetization, and magnetization itself has a magnetic and does not disappear. The composition of the artificial magnets is based on the magnetization properties of the various metals, as required. Magnet close to (touch) magnetic material, the material near the end of induction into a different name, and the other end is the same name.

Magnet classification

A. Temporary (soft) magnets

a. Meaning: magnetic short, when the magnet removed after the magnetic disappeared. b. Example: nails, wrought iron

B. permanent (hard) magnets

a. meaning: magnetization, long-term preservation of magnetic. b. Example: steel nail

According to the above information is summarized as follows: According to the principle of electromagnetic induction, a strong current can produce a strong magnetic field, the use of strong magnetic field magnetization of ferromagnetic material, and because of different material magnetization is not the same, some substances easy to magnetize, Magnetic (loss of magnetic), can be a long time to keep the magnetic. The magnetization of this material produces magnets. Use a magnetizer to magnetize the hard magnet.

According to the principle of electromagnetic induction, the current can produce magnetic field, the use of strong magnetic field magnetization of hard magnetic material is generally known as the magnet of the magnetic material, in fact, several different things: the most common magnets, such as the general speaker with the magnet, Fog oxygen. They are used in the hot rolling process of steel from the billet rolling off the surface of the scale (the sheet of iron oxide), after impurity removal, crushed and then add a small amount of other substances, into the steel mold pressure molding , And then in the reductive furnace (hydrogen) sintering, so that part of the oxide reduction was ferrite, cooling, and then placed in the exciter to magnetize produced.


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