Magnetic properties of a new grade of thin grain-oriented 3% silicon-iron

It is pointed out that thin-gauge electrical sheets (thickness less than 0.20 mm) hold a privileged position when equipment operates at medium frequencies and often in nonsinusoidal induction conditions. The magnetic properties of two samples obtained by two different fabrication processes are compared. The first was prepared by rolling standard-gauge GO (grain-oriented) sheets at the required thickness, and the second was obtained by direct recrystallization at the final thicknesses. The latter sample presents better characteristics than the former in sinusoidal as well as in trapezoidal induction. It is concluded that better control of the secondary recrystallization process for the GOSS texture makes it possible to elaborate thin grain-oriented 3% silicon-iron by direct recrystallization at the final thicknesses