In quality testing, it is no longer just the mechanical properties of components but also their magnetic properties that play an important role.
The rapid development of electronic drives has brought with it new tasks and challenges in quality testing. It is no longer just the mechanical properties of components that are important, but also the reaction of the material on electromagnetic fields. Components are required to be made of materials that can be easily magnetized so that the electromagnetic system can work quickly and with as little energy consumption. In such cases, magnetic properties in general and magnetic hysteresis are useful criteria for assessing the energetic efficiency of the material in the final application.
Soft Magnetic Components
Magnetic hysteresis loop represents the relationship between field strength H and polarization J (or flux density B) during magnetization process (or closed field strength cycle) and has a characteristic loop topology. The most important magnetic parameters of the ferromagnetic material can be read from the hysteresis loop. Remarkably, the dimensions of the hysteresis loop give various insights not only into the microstructure of the material, and thus into the mechanical properties, but also into the dynamic behaviour of the material in the magnetic circuit.
Abb 1: Hysteresis Curve
The KOERZIMAT 1.097 HCJ measuring system by FOERSTER facilitates the accurate, automatic, and fast measurement of the coercivity HcJ. The largely geometry-free measurement is particularly suitable for testing samples with complex shapes. The extension module J(H) measurement offers the possibility to determine the complete J(H) Hysteresis on soft magnetic steel incl. the initial curve for round bars and metal sheets.
The KOERZIMAT 1.097 MS measuring system by FOERSTER facilitates the accurate, automatic, and fast measurement of the weight-specific saturation polarization σs and volume-specific saturation polarization Js. The largely geometry-free measurement is particularly suitable for testing samples with complex shapes.
These Stories on magnetic properties
In Laisen 70
72766 Reutlingen
Germany
No comments yet
Let us know your opinion