Abstract

This chapter discusses rotor and stator cores and, in particular, steel lamination and insulation on these laminations, as well as how the laminations are fabricated into cores. It restricts the materials, processes, and insulation of laminated stator and rotor cores, that is, electromagnet application. Magnetic fields are characterized by the magnetic flux, the magnetic flux density or B, and the magnetic field intensity or H. The latter is called the magnetomotive force or mmf when the field is generated by an electromagnet. Laser cutting is also used for limited new production and prototypes, for modifications of laminations from existing dies or punched stock, and to replace damaged laminations during core repairs. The annealing is carried out in an inert atmosphere to prevent oxidation of the metal surface. Burr removal is often done by a grinding or sanding operation that also leaves some bare metal where the burrwas removed.

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