Oriented silicon steel and preparation method thereof

The invention relates to oriented silicon steel and a preparation method thereof, and belongs to the technical field of steel preparation. The method comprises the steps that one side of cold-rolled strip steel with the surface coated with a separant is coated with a conditioning agent, the conditioning agent is an aqueous solution, then coiling is conducted, and a steel coil is obtained; the steel coil is subjected to annealing treatment, the side, coated with the regulator, of the steel coil faces upwards, and silicon steel is obtained; by spraying the conditioning agent to one side of the cold-rolled steel sheet, the boron-containing compound generates boric anhydride and a liquid phase at a high temperature to promote self-sintering and shrinkage of the local separant, so that gas pockets caused by local aggregation of high-temperature decomposed gas are avoided, and bicarbonate releases certain gas at a low temperature; gas channels can be formed between the steel coils under the initial low temperature