GRAIN-ORIENTED SILICON STEEL SHEET REDUCED IN MAGNETOSTRICTION AND ITS PRODUCTION

摘要

PURPOSE: To provide a product prepared by reducing magnetostriction in a grain-oriented silicon steel sheet after finish annealing and its production. ;CONSTITUTION: A magnetostriction value (peak-peak) is reduced at ≤1.8T magnetic flux density by allowing internal microstrain to remain in a grain- oriented silicon steel sheet. The volume of 90deg magnetic domain at a magnetic flux density of 0T is increased by applying internal microstrain, and further, by decreasing the change in volume of 90deg magnetic domain at ≤1.8T magnetic flux density in an alternating magnetic field, a magnetostriction value lower by ≥5% as compared with the case after stress relief annealing can be obtained.;COPYRIGHT: (C)1996,JPO