Permanent magnet is intended for use as a source of constant magnetic field in electrical, automatic, radio engineering and other devices. Moreover, it allows you to significantly reduce their dimensions and weight, while increasing autonomy and reliability. Here, the residual induction of the production material will always be higher in relation to the magnetic flux density. One of the most efficient methods of generating energy is a permanent magnet generator. This can be explained by the fact that the segments entering the magnetic field commute at a very low cost, due to the formation of poles with polarity opposite to the main magnet. The result of this is the extrusion of this segment. In the event that there is another similar element, a kinematic magnetic swing begins, the principle of which is to move in the opposite direction. This, in turn, greatly facilitates the process of inserting this segment into the magnetic circuit.
Production
Permanent magnets can be magnetized as inimpulsive, and in a constant field. The intensity of the latter depends on the shape, size and brand of the device. A very important nuance in this case is the level of its resistance to the effects of various external factors. First of all, this concerns temperature and demagnetizing fields. Along with this, you should also not forget about shock loads and vibration. As for the shapes and sizes, they depend only on how this or that permanent magnet was obtained. Among them are plastic deformation, casting, vacuum deposition, as well as powder metallurgy. Based on the production method, the device has four varieties, which will be discussed in more detail below.
Varieties
A deformable permanent magnet appears as a result of pressure or a cutting tool. Its high manufacturability makes the device competitive and allows it to be used in linear dimensions up to 30 mm. Due to this, it is often used in electronic-mechanical watches. Cast options are processed by abrasive grinding and stand out among other types in that they do not have significant restrictions in terms of size and shape. Based on this, you can find them in the form of brackets, bars, rings, cylinders, and so on. The main advantage of this type of device is that the working volume is very extended, which ensures high efficiency. Such a permanent magnet is most often used in magnetrons, high power klystrons, as well as in lamps.reverse wave. The deposition is carried out on a substrate, which is the parts of the magnetic circuit, or rather their surface. Devices obtain their final magnetic characteristics as a result of heat treatment. They are usually used in delay structures and electrical filters. Thanks to powder metallurgy, interwoven permanent magnets are created based on the rare earth metal system. Their key characteristics are high resistance to demagnetization, low cost compared to other types, and simple production technology. This makes them dominant in terms of output.
