Steel plate for high output reluctance motor iron core and manufacturing method thereof, rotor for reluctance motor using the same, stator and reluctance motor

摘要

PROBLEM TO BE SOLVED: To provide: a steel sheet that can make an output torque greater when using the same as an iron core of a reluctance motor; a method of manufacturing the steel plate; a rotor and a stator, using the steel plate as an iron core material; and a motor.SOLUTION: A steel sheet in which a value of magnetic flux density Bis at least 1.0 T when strength of a magnetic field is 500 A/m and Bis at least 1.70 T when being 5,000 A/m is used as an iron core steel sheet of a reluctance motor. It is desirable that a metal structure of the steel sheet is a ferrite single-phase structure in which a crystal grain size is at least 25 μm, since the magnetic flux density in a low magnetic field side becomes high.