Oriented Silicon Steel and Method for Manufacturing Same

摘要

The invention discloses an oriented silicon steel with excellent magnetic properties and a manufacturing method thereof. The present invention obtains the oriented silicon steel with excellent magnetic properties by controlling the area ratio of small crystal grains of D<5 mm in an oriented silicon steel finished product to be not more than 3%, and controlling the ratio μ17/μ15 of the magnetic conductivity under the magnetic induction of 1.7 T and 1.5 T in the oriented silicon steel finished product to be 0.50 or more. In addition, by using a slab of the oriented silicon steel with suitable components and an optimized cold rolling step, the present invention effectively decreases the heating temperature of the slab and the production cost thereof, and simultaneously better controls the size and ratio of the crystal grains in the oriented silicon steel finished product and the magnetic conductivity in a certain range of magnetic induction, ensures that secondary recrystallization has good Goss texture orientation and finally, stably obtains the oriented silicon steel product with excellent magnetic properties.

主权项

1. An oriented silicon steel, wherein the area ratio of small crystal grains having a grain size of less than 5 mm in said oriented silicon steel is not more than 3%; a ratio μ17/μ15 of said oriented silicon steel is 0.50 or more, wherein μ17 is a magnetic conductivity under magnetic induction of 1.7 T and μ15 is a magnetic conductivity under magnetic induction of 1.5 T.