Rotational Hysteresis in Tungsten Steel and in Hysteresis Motors
- 1 March 1964
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 35 (3) , 970-971
- https://doi.org/10.1063/1.1713561
Abstract
The starting torque for hysteresis motors is discussed in terms of the rotational hysteresis torque of the permanent magnet rotors as measured with a dc torque magnetometer. The rotational hysteresis torque was found to agree within experimental error with the starting torque of a rotor suspended in a magnetic field rotating at 60 cps. The rotational hysteresis in tungsten steel was measured for as‐quenched and tempered samples. The rotational hysteresis had a peak value of 2.1×105 ergs/cm3 and decreased with tempering. The applied field at which the peak rotational hysteresis was found was not changed by tempering. The rotational hysteresis integral, a measure of the magnetization reversal mechanism, varied from 2.2 to 3.2, increasing as the coercive force decreased. The maximum anisotropy field in the material was found to be 6700 Oe.This publication has 6 references indexed in Scilit:
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