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Ferrite Magnets Magnetic Properties Of Materials
Aug 18, 2017

Ferrite Magnets Magnetic properties of materials

Ferromagnetic material is how to classify, what are their characteristics

Among the various magnetic materials, the most important is the iron as a representative of a class of highly magnetic materials, it has ferromagnetism. In addition to iron, cobalt, nickel, gadolinium, dysprosium and holmium also have ferromagnetism. However, the commonly used high-pressure milling machine ferromagnetic material is multi-instrument magnetic iron and other metal or non-metallic alloy, with ferrite black magnetic and some iron containing iron (ferrite). The magnetic properties of ferromagnetic materials are often expressed in the form of characteristic curves, the most commonly used of which is the description of the magnetic induction between the material and the dependence of the magnetization field.

  The magnetic properties of the material are related to the "jaw crusher price", in addition to the magnetic parameters (such as the magnetic field strength, temperature, and the presence or absence of mechanical stress) of the given meter. The starting magnetization curve is the curve obtained when the magnetization field is monotonically increasing. The common characteristic of the starting magnetization curve of the ferromagnetic material is that the curve consists of steep sections and flat sections, which are located at the curved section of the upper section of the curve. The steep section corresponds to the case of easy magnetization, while the flat segment corresponds to the case where it is difficult to magnetize.

    When the magnetization field changes in both positive and negative directions, the magnetization process of the material undergoes a cyclic process. The closed curve is called the hysteresis loop of the material. If the material is saturated at both ends of the Raymond mill's magnetization curve, the resulting loop is called a saturated hysteresis loop or a main hysteresis loop. The circulation range of the magnetization field is gradually reduced, and the trajectory of the top of a series of hysteresis loops is the normal magnetization curve. This curve is useful because it can be copied, and it also illustrates the magnetic properties of the material. The normal magnetization curve and the starting magnetization curve are very similar in shape.

What are the similarities and differences between the ferromagnetic resonance and the ground surface

Occurrence of ferromagnetic resonance due to the power supply voltage in the zero sequence weight of the magnet and the presence of high-order weight, will also show the ground signal, but the system practice is no problem. At this time three to the ground voltage changes and ground when the appearance of the difference. The nature of the same point of the same point grounding metal magnet phase ground. There is a ground signal. Fault phase voltage is zero; non-defect phase voltage rise to line voltage. Nonmetal grounding. One phase (two phase) voltage is low (not zero), the other two phase (one phase) voltage rises, close to the line voltage. Parallel ferromagnetic resonant fundamental resonance (overvoltage ≤ 3 times the phase voltage). There is a ground signal. A phase voltage is reduced (not zero), the two-phase voltage increases by overtaking the ferromagnetic magnetic line or the voltmeter ends; the two-phase voltage decreases (not zero), one phase voltage increases or the voltmeter ends. Neutral points are moved outside the voltage triangle. Frequency harmonic (over voltage ≤ 2 times the phase voltage). Three relative to the voltage phase sequence order turns increase, and (1.2 ~ 1.4) phase voltage to do low frequency swing, about once per second. The neutral point is displaced within the voltage triangle. High frequency resonance (over voltage ≤ 4 times the phase voltage). Three to the ground voltage together to increase, far beyond the line voltage, or the voltage meter to the end. Neutral points are moved outside the voltage triangle. The series ferromagnetic resonant base involves 1 / 3f resonance (overvoltage ≤ 3 times the phase voltage). There is a ground signal. Three-phase voltage or a phase, two-phase voltage together significantly exceed the rated value.


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