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Measurements of Magnetic Properties of Electromagnetic Actuator in High-Temperature Environment |
Journal of Magnetics, Volume 20, Number 1, 31 Mar 2015, Pages 86-90 |
M. Noh * (Chungnam National University), M. J. Gi (Chungnam National University), D. Kim (Chungnam National University), Y.-W. Park (Chungnam National University), J. Lee (Korea Atomic Energy Res. Inst.), J. Kim (Korea Atomic Energy Res. Inst.) |
Abstract |
Electromagnetic actuators are versatile and able to meet demanding requirements, such as operation in very low or very high temperatures. When the actuator is used in a high-temperature environment up to 500°C, we need to know how the force-producing capability of the actuator is affected by the operating temperature. Specifically, it is necessary to know the temperature-dependence of magnetic properties that determine the mechanical forces. In this paper, we measure the changes in magnetic properties of SUS410 material in hightemperature environment. We also devise a novel signal processing technique to remove the integration drift. At the field strength of 18,000 A/m, we found that the flux density at 500°C is decreased by 26%, compared to the result at room temperature. Therefore, the actuator must be sized appropriately, if it is to operate in hightemperature settings.
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Keywords: electromagnetic actuator; high-temperature environment; magnetic property; magnetic stainless steel |
DOI: http://dx.doi.org/10.4283/JMAG.2015.20.1.086 |
Full Text: PDF |
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